BACKGROUND ART Compound microscope was first invented by Galileo and are also presently in use for magnification purposes. Such compound microscopes as illustrated in accompanying figure 1 usually comprise of a objective closer to the object to be viewed and an eye piece serving as view point of the magnified image of the object The objective and eye piece are connected through a body tube and an extended tube, a slide table mounted with respect to said base portion of the microscope providing for accommodating and positioning of the object to be viewed thereunder said objective. A diffused light source is also provided under the object. The optical parts of the compound microscope are comprised of the said objective and the said eye piece. The focal length of the objective is very small while that of the eye piece is somewhat larger.

The principle of the magnification achieved in such compound microscope are as discussed hereunder with relation to accompanying figure 2.

A small object (PQ) placed just beyond the first focal plane (Fo') of the objective provided for a real magnified and inverted image (PIQI). For distinct vision the distance (Dt) of the final image (P2Q2) form the eye piece is approximately 25cm while for normal vision the distance is infinity. In such system, the distance of separation (g) between the objective image (PzQ) and the second focal plane (Fo) of the objective is maintained greater than or equal to the distance of separation (FoFe') between the two adjacent focal points of the objective of the eye piece.

The magnification achieved through such conventional compound microscope is as detailed hereunder: Angle subtended to the eye by the final image M = Angle subtended to the eye by the object at a dist. Dt ?2HeQ2<)) Or M =---=-- P, He' ! ! PHe PQ/Dt PQ/Dt

pIQI Dt He'Qi PQ He'QI PQ PiQiDt -_ X__ PQ He'Q M = mo x me mo = Linear Magnification of objective.

Me = Magnification of Eye Piece.

In view of the aforediscussed requisites of compound microscope its construction is bulky, heavy and difficult to carry. Also the components involved and the complicated nature of construction make such compound microscope very expensive and not easily affordable. Moreover, there is limitation in the extent of magnification that can be achieved of such known compound microscopes.

Apart from such compound microscope which are bulky, heavy and involve complex construction and principles of operation/use the prior art also provides for small size hand held microscope which are much simpler and rugged in construction and found to be easy and safe to handle.

US Patent Nos. 2986830,3734596 and 3756699 discloses some of the earliest varieties of such hand held microscopes wherein the slide viewers with fixed focuses are hand held. These viewers had problems in not permitting the desired focussing on the object being viewed and were thus not sufficient to serve the proper purpose of a microscope with good focussing and magnified viewing provisions. Attempts have also been made in the past t adapt such hand held microscope for proper focussing on objects to improve upon the quality of viewing through such hand held microscopes.

US Patent Nos. 3391975 and 4095874 discloses hand held microscope which provide for such desired focussing on objects for better sharper viewing of magnified objects. While these US patents disclosed means for adjusting the focussing on object for sharper and better quality of viewing, the same had the inherent restriction of all known hand held microscopes of providing magnification of a specified magnification

power say lOx, 20x or 30x magnification depending upon the available magnifying lens means used.

US Patent No. 4729635, teaches an embodiment of the hand held microscope wherein the restriction in having variable magnification power in a hand held microscope was avoided by provision in the frame of a hand held microscope having two articulated members movable towards and away from each other for focussing with one member holding a specimen to be examined and having an object aperture and the other member having a lens aperture aligned with the object aperture and bearing a lens member having a plurality of lenses of varying lens powers of a maximum of 100x magnification provided therein and adapted to be rotatably mounted for bringing anyone of the selected magnifying lenses in alignment with the said object aperture for magnified viewing of the object.

While US Patent No. 4729635 thus provides for a single hand held microscope having provision for varying the magnification power the same had restrictions like that of the other known hand held microscope in that the same could provide for maximum magnification of upto 100x. Moreover, higher the magnification power of the lens used the higher was the cost of obtaining the same which made the product cost extensive.

Importantly, also attempts to increase the magnification of hand held microscopes beyond 100x under theexist. ng state of art essentially squired the use of combination of lenses and principles of compound microscope which obviously affected the simplicity in construction and use required of such small size hand held microscope of the type discussed above.

OBJECTS It is thus the basic objective of the present invention to provide a micro microscope which would be light weight, pocket size and very convenient to carry and operate and has magnification capacity in the order of atleast 100 to 1000 times or more.

Yet further object of the present invention is directed to provide for a light weight pocket size microscope with said high magnification capacity which has in built light source so as to be operable independent of external light source.

Another object of the present invention is to provide for a micro microscope with said high magnification capacity which is adapted for use both in built light sources and also external light sources.

Yet another object of the present invention is directed to provide a micro microscope with said high magnification capacity with or without in-built light sources having collapsible and portable stand for hands free comfortable viewing of objects therethrough at varying viewing levels.

Yet further object of the present invention is to provide for a micro microscope with said high magnification capacity which would be durable and free of fungal attacks.

Yet further object of the present invention is to provide for a micro microscope with said high magnification capacity which is adapted for use in conjunction with various optical devices such as astronomical telescope, photographic cameras for various optical uses.

Yet another object of the present invention is to provide for a light weight pocket size micro microscope with said high magnification capacity which would be simple to manufacture and will also be cost effective.

DISCLOSURE OF THE INVENTION Thus according to the broadest aspect of the present invention there is provided a micro microscope having magnification capacity in the order of atleast 100 to 1000 times or more comprising: a view finder having. atleast one view point ; said view point comprising an aperture communicating with a transparent magnifying means being in alignment with said aperture to provide for magnified viewing of an object through said transparent media.

Any object illuminated by a light source can be viewed as magnified through the view finder.

The transparent magnifying means is selected from one or more of extremely small sized solid transparent sphere or hemisphere, non-volatile transparent liquid. The form, dimension and refractive index of the magnifying means are predetermined based on the desired magnification characteristics. Preferably said magnifying means is selected from extremely small sized solid transparent sphere or hemisphere, non-volatile transparent liquid hemisphere and semi solid transparent sphere/hemisphere having radius in the range of 0.10 mm to 3.0 mm and refractive index (u) in the range of 1.5 to 1.85 while said aperture diameter vary from 0.18 mm to 3.0 mm depending upon the

desired magnification. The non-volatile liquid magnifying means can be any suitable non-volatile liquid having the desired magnification characteristics such as cedar wood oil, highly refined petroleum oil etc. Also, in the instance said transparent magnifying media can comprise a combination of said solid transparent sphere/hemisphere and/or said non-volatile liquid hemisphere with transparent media, the refractive index of said transparent media being less than or equal to the refractive index of said sphere/hemisphere magnification means.

Importantly, the transparent magnifying means should be free of any foreign particles or air bubbles.

According to one preferred aspect of the present invention there is provided a micro microscope having magnification capacity in the order of atleast 100-1000 times or more comprising: a view finder comprising a thin top plate and another thin bottom plate and having atleast one view point; a view point aperture communicating with said transparent magnifying means comprising an aperture in the thin top plate and an aperture in the thin bottom plate, said transparent magnifying means hous, d therebetween said top and bottom plates and maintained in alignment with aperture to provide for magnified viewing of an object positioned thereunder said aperture in said thin bottom plate through'said aperture in said thin top plate.

The thin plate should preferably be obtained or a material which would be rust free, oxide free, sulphate free, drillable and having smooth surface and not easily breakable. Preferably it may be selected from brass alloy, stainless steel, gold plated brass alloy polymeric material and the like.

The view finder being obtained of thin plate with thickness preferably in the range of 0.5 mm to 2.5 mm and the transparent sphere/hemisphere of small dimensions preferably having radius in the range of 0.10 mm to 3.0 mm are accommodated within such thin plate, thus providing for obtaining of the micro microscope of the invention of extreme small size shape and configuration convenient to carry from one place to another and even within one's pocket. Preferably the top and bottom apertures diameter in the view finder may vary from 0.18 mm to 3.0 mm depending on the extent of magnification desired.

Preferably, the view finder of the microscope is provided with a thin transparent protective means atleast in the top thereof for safely accommodating and providing said transparent magnifying means at the view point. Such thin transparent protective means can be a thin glass plate.

In accordance with such aspect of the invention the micro microscope comprise : a view finder comprising a thin plate having a top surface and a bottom surface and having a view point, said view point aperture communicating with said transparent magnifying means comprising an aperture at the top surface and extending therethrough the plate and through its bottom surface, said transparent magnifying means housed within said plate and maintained in alignment with said aperture to provide for magnified viewing of an object positioned thereunder said aperture in said bottom surface through said aperture in said top surface.

In accordance with yet further aspect the present invention provides for the micro microscope discussed above provided with in-built light means for viewing of objects even in insufficient external light conditions.

Such in-build light means comprising means for providing diffused light to the object to be viewed housed within a housing and comprising a light source operatively connected ta a supply, means for directing the! ight source through a reflective means and further through an aperture in the top of said housing to an object positioned atop said housing top aperture, said aperture in said top of the housing operatively communicating with said view point of the micro microscope.

The reflective means used being a mirror positioned at an angle of 45° with respect to light source. The means for directing the light towards said mirror comprising atleast one stopper means with passage for said light source in the desired direction.

The supply source for said lamp can preferably comprise of operative connection of said lamp to a battery terminal via on/off switch. While the supply source is within the housing, the on/off switch is provided with means for its operation external of said housing and being further operatively connected to an LED indicating on/off condition.

The micro microscope of the invention can be provided with means for adjustment for distance of the view finder/view point from the object/slide to facilitate obtaining of sharper images through the micro microscope.

Such means for adjusting the distance of the view finder/view point from the object/slide can comprise: i) a resilient upwardly biased plate secured at one end to said housing top and at its other end to said view finder, an adjustment knob there through said view finder and extending into said housing such that upon rotation of said knob in one direction so as to move it upwards the view finder is adapted to move upwards by way of the said upward bias to increase the distance between the view point and object and upon rotation of the knob in the reverse direction to move it downwards, the view finder is also forced to move downwards against the normal upward bias to reduce the distance between the viewpoint and object ; and/or ii) lever means operatively connected to a rotary knob such that upon rotary motion of the knob in one direction the lever and said view finder move upwards and by rotary motion of said knob in the reverse direction, said lever and said view further move downwards. it is thus possible to provide the micro microscope of the invention in the form of-thin plate in accordance with the view finder disclosed above or the micro microscope of the invention can be obtained in the form of small size housing for having the in-built light source alongwith the view finder of the invention.

In the above disclosed micro microscope of the invention the magnification power is dependent on i) diameter of transparent magnifying sphere/hemisphere used, ii) refractive index of the magnifying media and transparent media and iii) total focal length.

Preferably protective thin transparent plate is provided atleast over the view point of the view finder atleast at the top surface thereof It is also possible to provide thin protective transparent plate therebetween the top surface and the transparent sphericaühemispherical and also therebetween the bottom surface and the transparent sphere/hemisphere. The intermediate region therebetween the top surface and the bottom surface of the view finder is developed to provide for stable positioning and

maintaining of the sphere/hemisphere in alignment with the top and bottom aperture to constitue the view point.

In accordance with a preferred aspect of the present invention the micro microscope having such in-built light source comprise: said view finder having said view point; said view point providing for magnified viewing of an object positioned thereunder said aperture in said view point; means for providing diffused light to the object to be viewed; means for adjusting the distance of the view finder with respect to the object for finer magnified image.

In accordance with yet another aspect the micro microscope of the invention with means for selectively viewing using in-built light source when external light is insufficient/absent or external light sources.

In accordance with a preferred aspect such a means for viewing through in-built light source or from external light sources comprise: an in-built light means comprising a reflector base plate housed within a housing and at least partially rotatably secured at one end with respect to said housing and mounted thereon an internally housed light source, said view finder provided externally over the top of said housing, said reflector base plate free end having a downwardly bent portion adapted to reflect light from said internal light source falling thereon through an aperture in said reflector base plate and further through an aperture in said housing top to said view point of said view finder; a switch means operatively connected to said reflector base plate such that (i) for use of in-built light source for viewing said reflector base plate is positioned such that the said aperture in said reflector plate and said housing top are vit, alignment to reflect light from said in-built source towards said view point for viewing of object using said in-built light and (ii) for use of external light source said reflector base plate is shifted to a position such that external light enter through an aperture in said housing base and pass there through said aperture in said housing top and further onto said view point for viewing of object under external light.

It is thus possible by way of the abovesaid provisions of means for selectively using the light from in-built sources and from external light sources to provide for the operation of the micro microscope using both external light sources and also in-built light sources as and when desired.

Also to favour comfortable handsfree viewing through the micro microscope of the invention with or without the in-built light source the same can be provided with collapsible stand means for supporting the micro microscope for viewing purposes and when not in use the said stand adapted to collapse to a portable and compact condition for convenience of carrying as a handy device.

In accordance with yet another aspect of the invention such a micro microscope with or without the in-built light sources having the collapsible and portable stand comprise: a top platform securely holding said view finder with or without in built light source a base platform having an adjustable mirror for reflection of external light towards said view point or said view finder; at least one collapsible leg means operatively connected to said top and base platform to p,) vide for supporting stand for said view finder with or without in built light source, said collapsible leg adapted for adjustment of vertical height thereetween said top platform supporting said view finder and bottom platform supporting said mirror; said collapsible leg connection to said top and bottom platforms further adapted for adjustment of angular disposition of said top and bottom platform with respect to one another to favour viewing comfort.

In the instance the micro microscope is having the in-built light sources housing the top platform securely holding said view finder constitutes the said housing top platform with said collapsible leg operatively connected at one end to said housing and at its other end to said base platform.

The construction of the collapsible leg, its shape and dimensions as also its connection to said top and said base platform being such that in the completely collapsed condition the stand assumes a compact and portable disposition therebetween said top and base platforms and when it is opened it serves as an height adjustable stand for said micro microscope with said distance therebetween the top and bottom platforms

varied by means of the collapsible legs upto a maximum vertical distance achieved by complete stretched vertical disposition of the collapsible leg.

In accordance with yet another aspect, the present invention provides a system for micro-photography of the magnified images using the micro microscope with in built light source comprising: said micro microscope with in-built light and an SLR camera with camera lens removed from the lens mount maintained in total dark condition; object to be photographed in slide mounted thereunder said view point of said micro microscope; said view point of said micro microscope maintained in alignment with said lens mount of said camera; shutter release adapted to be attached to the camera and shutter kept open ; means for adjustment of distance between said micro microscope and said camera and/or said view finder with respect to said object for sharper magnified photograph; means for clicking said camera for photography of magnified image.

It is thus possible by way of the above system to take photographs of the magnified object through the micro microscope of the present invention.

In accordance with yet further aspect the present itivention prolides for a telescope having the micro microscope of the invention comprising: said view finder having atleast one view point provided at one end of said cylindrical tube; a telescope objective having a convex lens mounted at the other end of said cylindrical tube.

The details of the invention its objects and advantages are described in greater detail with reference to non-limiting exemplary embodiments of the micro microscope of the present invention described with relation to the accompanying figures wherein: Fig. 3 is a sectional view of the first embodiment of the view finder of micro microscope in accordance with the invention.

Fig. 4 is a sectional view of the second embodiment of the view finder of micro microscope in accordance with the invention.

Fig. 5 is a sectional view of the third embodiment of the view finder of micro microscope in accordance with the invention.

Fig. 6 is a sectional view of the fourth embodiment of the view finder of micro microscope in accordance with the invention.

Fig. 7 is a sectional view of the fifth embodiment of the view finder of micro microscope in accordance with the invention.

Fig. 7A illustrates a preferred embodiment of the view finder of the micro microscope of the invention.

Fig. 7B is an exploded view of the view finder of fig. 7A.

Fig. 8A is a top plan view of an embodiment of the micro microscope of the invention without any in-build light source.

Fig. 8B is side view of the micro microscope of fig. 8A.

Fig. 8C is a perspective view of a sixth embodiment of the micro microscope of the invention having the in built light source for object viewing.

Fig. 9 is a sectional top plan view of the light source housing used in the micro microscope according to figure 8.

Fig. 10 illustrates the operating circuitry for the light source in the micro microscope of the invention.

Fig. 10A is a perspective view"'fthe micro microscope with in built light source having switching means for selectively using in built light or external light for viewing.

Fig. 10B is a bottom plan view of the micro microscope of fig. 10A.

Fig. 10C is a sectional view illustrating the disposition of the switching means and operatively connected in built light source of the micro microscope of fig. 10A Fig. 10D is an exploded view of fig. 10C.

Fig. 10E is a bottom view of the micro microscope with the housing base removed showing the disposition of the reflector plate for use of in built light source.

Fig. 10F is a bottom view of the micro microscope with the housing base removed showing the disposition of the reflector plate for use of external light source.

Fig. 11 illustrates in greater detail the means for adjusting the height of the view finder with respect to the object for finer view of the magnified object used in the micro microscopeof the invention.

Figs. 11 A and 1 ! B illustrate an embodiment of the height adjustment means for adjusting the height of the view finder with respect to the object/slide.

Figs. 11C and 11D illustrate another embodiment of the height adjustment means for adjusting the height of the view finder with respect to the object/slide.

Fig. 12A is an alternative embodiment of the arrangement of the view finder with respect to its height adjusting means of the invention having two view points of different magnifying capacity.

Fig. 12B is a top plan view of the arrangement of the view finder with respect to the height adjusting means used in the micro microscope of the invention.

Fig. 13 shows the principle of magnification in the micro microscope of the invention.

Fig. 14A illustrates the side view of the micro microscope without in built light source provided with the collapsible and portable stand.

Fig. 14B illustrates the front view of the micro microscope without in built light source provided with the collapsible and portable stand.

Fig. 14C illustrates the collapsed portable condition of the micro microscope with portable stand.

Fig. 14D illustrates a partially collapsed portable stand disposition of the micro microscope.

Fig. 15 illustrates the side view of the micro microscope with in built light source provided with the collapsible and portable stand.

Fig. 16 illustrates the micro photography system using the microscope of the invention.

Fig. 17 illustrates the bellow means connecting the micro microscope and the SLR camera of the system of fig 16.

Fig. 17A is a photographic representation of approximately 1000 x magnification of a part of OSCILIATORIA achieved using the micro microscope of the invention.

Fig. 17B is a photographic representation of approximately 1000 x magnification of T. S. OF ASCARIS (MALE) using the micro microscope of the invention.

Fig. 17C is a photographic representation of approximately 1000 x magnification of T. S. Of DICOT LEAF VASCULAR BUNDLE using the micro microscope of the invention.

Fig. 17D is a photographic representation of approximately 1000 x magnification of T. S. OF DICOT LEAF PARENCHYMA using the micro microscope of the invention.

Fig. 17E is a photographic representation of approximately 1000 x magnification of PART OF DROSOPHILA HEAD using the micro microscope of the invention.

Fig. 17F is a photographic representation of approximately 1000 x magnification of MOSQUITO LEG JOINT using the micro microscope of the invention.

Fig. 18A to 18D illustrate the telescope having view finder of the micro microscope of the invention.

Fig. 19A and 19B are enlarged sectional views of view finder and light source of the micro microscope of the invention for viewing of opaque objects.

Reference is first invited in Fig. 3 which illustrates in section an embodiment of the view finder of the invention. As illustrated in said figure the view finder is comprised of the protective thin glass, iate (A), top thin metal plate (B), transparent magnifying sphere (C) and the thin bottom metal plate (D).

Fig. 4 illustrates in section another embodiment of the view finder of the invention comprising the protective means in the form of thin glass plate (A), top thin plate (B), a pair of magnifying hemisphere (C), the bottom thin plate (D) with a pair of thin glass plate (E) positioned therebetween said top surface of thin metal plate and the hemisphere and the bottom thin metal plate and the hemisphere.

Fig. 5 illustrates a further embodiment of the view finder of the invention comprising said protective means in the form of a thin glass plate (A), the top thin metal plate (B), the view point comprising transparent magnifying sphere (C), the thin bottom metal plate (D) and transparent media (E & F) and the thin glass plate under the bottom thin metal plate.

Fig. 6 illustrates a further embodiment of the view finder of the invention wherein the protective means of thin glass plate (A), thin top metal plate (B), view point comprising transparent magnifying hemisphere (C), the thin metal plate (D), thin glass

plate (E) with transparent media (F) of refractive index u equal to that of refractive index of the hemisphere.

Reference is further invited to Fig. 7 which illustrates yet further embodiment of the view finder of the invention comprising the protective thin glass plate (A), thin top metal plate (B), view point comprising transparent sphere with a projected part (P) to securedly hold said sphere by guiding means (E) and the thin bottom metal plate (D).

Reference is now invited to Fig. 7A and Fig 7B which show a further preferred embodiment of the view finder of the invention. As illustrated in Fig. 7A the view finder is comprised of top thin metal steel plate (A) and a bottom thin metal plate (D) with an intermediate metal plate (C). Therebetween the intermediate metal plate (C) and top plate (A) there is provided a protective glass plate (B). The view point is comprised of an aperture in said top steel plate (A) and a passage in said intermediate plate (C) and an aperture in said bottom plate (D) with a transparent magnifying sphere (E) securely held therebetween said passage in said intermediate member and said aperture in said bottom plate preferably with additional adhesive means.

As would be evident from Fig. 7A and 7B for such secured holding of said magnifying sphere (E), the passage (P) in said intermediate plate (C) is provided to have broader end faces (Fl/F2) and a narrower portion (CP) therebetween said end faces while the aperture (F) in said bottom thin plate (D) is provided to have a broader face (BF) facing said intermediate plate (C) and a narrower outer face (OF). The shape and dimension of said passage (P) facing said thin bottom plate and face (BF) of the bottom thin plate aperture are selected to favour compact housing of said sphere (E) therebetween preferably using adhesive (G).

Preferably, after the assembling of the view finder is completed as detailed above, the same is subjected to heating upto 200°C to sterilize the same to avoid fungal attack of the top glass plate. This facilitates clear and obstruction free magnified viewing of the object through the view point of the view finder. Importantly such a view finder can also be adapted to have plurality of different view points of varying magnification.

It is important to mention herein that the view finder of each of the above embodiments constitute of very thin plate with thickness preferably in the range of 0.5 mm to 2.5 mm and the transparent magnifying means being extremely small sized

sphere/hemisphere of radius of 0.10 mm to 3.0 mm accommodated within said thin plate and it is only to illustrate clearly the construction of the various embodiments of such view finders of the invention that the respective enlarged sectional views of the view finder have been provided. As would be evident from the various embodiments of the view finder illustrated under figs. 1 to 7 and 7A and 7B, the transparent magnifying media can be obtained of solid/non volatile liquid of requisite magnifying characteristics and of dimensions which are be based upon the magnification desired thereof.

Importantly, therefore, the selected extremely small dimensions of the transparent magnifying media together with its selected magnification characteristics such as (R. I) (u) and the aperture dimensions of the view finder achieve magnification in the order of atleast 100 to 1000 time or more which was not possible using conventional lenses which could provide magnification only upto 100x.

Importantly, also in the view finder of the invention illustrated above the diameter of the top and bottom aperture of the metal plates should be either equal or slightly less than the transparent sphere or hemisphere. For better result the aperture diameter is preferably 5 to 10% less than the diameter of the transparent media and aperture of the top and bottom surface should be very small to achieve very high magnification. Good amount of light source is required to illuminate the object. It is suggested not to use any cover slip on the object at the time of very high magnification (500x and above).

Such extremely small sphere/hemisphere constituting the transparent magnifying means can be preferably obtained of very thin glass string made from optical error free glass with specified (, u). The glass string should be 100% bubble free, dust free and scratch free. For the purpose, the selected glass string is heated up at an end thereof and the lp'-iss sphere thus formed in the molten state is detached from the glass string to thereby provide such extremely small dimensioned spherical magnifying media.

Accordingly, such small sphere of dimension ranging from 0.10 to 3.0 mm radius can be obtained. If required, hemisphere can also be obtained from such extremely small dimensioned solid spheres by carefully flattening half of the spherical surface free of scratches to thereby provide for the extremely small solid transparent hemispherical magnifying media used in the view finder of the invention.

Alternatively, such extremely small dimensioned hemisphere can be obtained from a drop of non-volatile transparent liquid magnifying media on a very thin glass plate. Diameter and (,) of non-volatile media is to selected as per magnification of the view-finder. The total housing of the view-finder is sealed and for better result it is airtight for clear view and durability.

Reference is now invited to accompanying figures 8A and 8B which illustrate a basic embodiment of the micro microscope of the invention having means for holding the object to be viewed on a slide and the like. As shown in said figures the micro microscope is comprised of the view finder (9) having the view point (1) supported on a base platform (5) at its end away from said view point such that the view finder is resiliently upwardly biased especially along its free end having said view point. An adjustment knob (2) upon rotary motion in one direction forcing said view finder alongwith said view point to move downward and upon rotary motion in the reverse direction causing the view finder and the view point move upwards by way of its natural upward biased achieved by said resilient means. Such downward and upward motion of the view finder/view point with respect to the base platform (5) having clips (4) for holding the object on a slide provide for better focussing oit the object for sharper magnified viewing of the object.

Reference is now im ited to Fig. 8C which illustrates a further embodiment of the micro microscope of the invention having an in built light source for supply of diffused light to the object to be viewed. As illustrated in said figure according to such an embodiment the light source is accommodated within the housing (H) having a top surface (5). The view finder (9) is shown secured to its height adjusting means (8) which is adjustable by operation of the adjustment knob (2). The view point of the view finder is illustrated by reference (1). A pair of clips (4) provide for holding of the object to be viewed thereunder said view point and above the light source aperture (A) on the top surface (5) of the housing. The on/off switch (3) provide for on/off the light source within the housing which is further indicated by the LED indicator (6).

Reference is now invited to Fig. 9 which is a top plan sectional view of the light source housing illustrating the arrangement of the components. As shown in said figure the light source is comprised of the lamp (10), plurality of stopper (11 to 13) having transparent/semitransparent films for supply of diffused light which is refracted by

mirror (14) towards the aperture (A) of the housing top surface. The battery chamber (7) is also illustrated in said figure.

Reference is now invited to Fig. 10 which schematically illustrates the operating circuitry for the lighting source. As shown in said figure the lamp (10) is operatively connected to the battery terminal (BT) through on/off switch (3). Also the LED (6) is operatively connected to the battery terminal to the on/off switch (3) to indicate on/off condition of the light source.

As would be evident from the above, the lighting source is comprised of gadgets which are simple in construction and can be accommodated in a very compact and small housing. This alongwith the micro size of the view finder provide for a micro microscope which can be operated even in darkness.

Reference is now invited to Fig. 10A to 10F which illustrate an embodiment of the micro microscope with switching means for change over for selective use of in-built light source mode or external light source mode and vice versa.

As illustrated in Fig. 10A such switching means which is provided only in case of micro microscope with in-built light sources comprise housing (7A) accommodating the in-built light source, iew finder (9A) having the view point (IA), said view finder secured in position by knob means (2A) also adapted for height adjustment of the view finder with respect to the object. Pair of clips (4A) provide for holding the slide (44A) having the object in position. A switching means ( 1A) operatively connected to an in- built light source and adapted for selective use of either said in-built light source or external light for viewing. A light emitting diode (6A) when glowing indicates operation of the system through said in-built light source and when in off condition indicating the operation of the system through external light. An aperture (API) in the top surface of the housing (7A) and an aperture (AP2) in the bottom surface of the housing (7A) are maintained in alignment with the view point (1 A) of the view finder for viewing purposes.

Reference is now invited to 10C to 10E which show the provision of the in-built light source in such an embodiment of micro microscope having the aforediscussed switching means for changeover from in-built light source to external light source. As illustrated in figures 10C to 10E the switching means (31A) extends within said housing (7A) and securely holds an end of a reflector plate (36A) by means of a thrust washer

(38A) and nut means (39A) such as to facilitate atleast partial rotary motion of said reflector plate (36A) upon corresponding rotary motion of said switching means (31A).

The reflector plate (36A) at the end away from said switching means (31A) connection is provided with a downwardly bent portion (37A) and an aperture (AP3) in the base adjacent thereto in alignment with said aperture (API) in the top of the housing. The light source mounted on said reflection plate comprising tubular holder (33A) internally accommodating a light means, said tubular holder having an opening facing said downwardly bent portion, a blue filter means (35A) and diffused optical condenser with hemisphere (34A) adjacent said opening in said tubular holder providing for diffused light from said light means towards said bent portion (37A) such that light falling on said bent portion (37A) is reflected through said aperture (AP3) in said reflector plate and further through said housing aperture (AP1) on to said object under the view point (IA) of the view finder (9A). The light means being operatively connected to a power source which can be in house battery means or 3V DC supply by external battery eliminator connection at socket (41 A). The operative connection of the switching means (31A) to the power source and the light means mounted on the reflector plate being such that when said switching means is positioned for in-built tight source operation, the power is switched on to light said light means and also said LED indicator (6A).

Importantly in such disposition of the reflector plate in its in-built light source mode the same also obstructs the aperture (AP2) at the housing base whereby external light if any is also cut off from proceeding towards the view point through the top aperture (API) of said housing. Such disposition of the reflector plate is shown in Fig. (IOD).

In the instance the micro microscope with such switching means is required to function using external light sources the switch (31A) is partially rotated to thereby also partially rotate reflector plate (36A) to a position as shown in Fig. (IOF) whereby the aperture (AP2) of the housing bottom is open and in alignment with the view point through the top aperture (AP1) of the housing to favour viewing of the object under external light sources entering through said aperture at the housing bottom. In such condition, the power supply is also put off which is further indicated by the off condition of the LED lamp in the housing top.

To facilitate such change over of the reflector plate from its position to supply in-built light at the object or allow entry of external light sources, guide means are

provided to support and secure the position of the reflector means at the desired location depending upon the selected light source mode of operation.

Reference is now invited to Fig. 11 which illustrates the height adjusting means for the adjustment height of the view finder for finer magnified image. Such a means comprise of a screw means (16) extending within the housing with the adjustable knob (2) extending out of said housing. The screw means is operatively connected to the view finder external of said housing via the up/down lever (8) and the movable plate (17). Accordingly by rotation of the knob (2) in the clockwise direction the view finder can be lowered while by rotating the knob in the reverse direction the view finder can be raised up and height adjusted accordingly.

Reference is now invited to Fig. 11A to 1 nid which illustrate possible varieties of means for adjusting the height of the view finder from the object to achieve sharper images.

As would be evident from Fig. 11A and 11B a stainless steel plate (ST) with spring action is fixed at one end to the housing top by means of screws (43A) while its other end is operatively connected to the view finder (9A) such that by virtue of such spring action the view finder is maintained under constant upward bias. A rot.. lable adjusting knob (2A) extends there through said view finder and into said housing top and secured internally within the said housing. by means (47A) such that upon rotary. motion of the knob (2A) in the direction of release from the housing, the view finder moves upwards under its usual bias action while the rotary motion of the knob (2A) in the reverse direction move it downwards into the housing accompanies downward motion of the view finder. Thus by way of such rotary motion the height of the view finder with respect to the housing top/object can be adjusted to achieve sharper images.

Alternatively as shown in figs. I I C and 11D it is also possible to provide for such height adjustment of the view finder with respect to said housing top/object wherein the view finder (9A) is connected to lever means (49A) preferably housed within a housing, said lever means further operatively connected to knob/screw (2A) such that when the screw is rotated to move downwards through the housing top the lever means and the view finder also moves downwards towards the housing top/object while when the screw is rotated in the reverse direction to extend upwards the lever means and the view finder is also adapted to move upwards alongwith the lever (49A).

Such an arrangement also provides for adjustment of vertical distance of the view finder from the housing top/object.

Reference is now invited to Figs. 12A & 12B which illustrate the arrangement of the view finder with respect to the height adjusting means. As illustrated in said figures 12A & 12B the view finder is shown hinged with respect to the support plate extending from said height adjusting means at point (D). In accordance with an aspect of the invention the view finder can have plurality of view points of different magnifying capacity. In said figure 12A, references A & C show two distinct view points with different magnification capacity. Accordingly while magnification of one capacity can be viewed by pointing the view finder (A) towards the aperture on the housing, the magnification of other magnitude can be view by rotating the view finder about the hinge axis at point (B) positioned the view point (C) above the aperture on the top surface. In such manner it is possible to provide plurality of view points of the different magnification capacity in a single view finder for extended and varied application.

Multiple magnification can be obtained by using rotary view finder available with different magnification power and at a time one view point will be set in a particular position.

Reference is now invited to Fig. 13 which illustrates the magnifying process of the present invention.

Fig. 13 shows the diagram of its working principle.

AB is an object placed near its view point O. Then an magnified image A, B can be seen by the eye E placed closer to the view point O. all kinds of optical errors can be minimise due to very small aperture of the plate. Suppose for distinct vision of an object AB is formed a high magnified image AlBl at a distance'X'from the point O.

Then, 1 1 1 ---=--- (f= Focal length of view point) x OB f <BR> <BR> <BR> <BR> <BR> <BR> <BR> <BR> I 1 I OB x f OB x f

x 1 I Magnification for distinct vision = M-= x-+-) OB x f x Or M = 1+-- F For example in the embodiment of the view finder of the invention according to Figure 1 with the following components specification the magnification achieved is as discussed hereunder: Thickness of metal plate = 1.2 mm.

Diameter of transparent sphere = 1.00 mm Thickness of thin glass plate = 0.2 mm Refractive index (,) of sphere = 1.62 Diameter of top aperture = 0.9 mm Diameter of bottom aperture = 0.8 mm.

In the above mentioned process very high magnification is possible without using any conventional objective and eye piece.

If we assume both the side of view point surrounded by AIR µ = 1 p = I Then-------x f r 1 µr f = 2 (p-1) If the refractive index (y) of the sphere is 1.5.

1.5r Then f =------ 2(1.5-1) f= 1.5r

If the refractive index (u) of the sphere is 1.62 1.62r Then f=------- 2(1.62-1) 1.62r f= 1.24 f= 1.3r Where d = 1 mm r = 0. 5 mm u=1.62 f= (1. 3 x 0.5) mm = 0. 65 mm x Magnification power (M) = I +- F For distinct vision x = 25 cm = 250 mm 250 M = 1 + 0.65 =385.

It is thus possible by way of the present invention to have extremely small sized micro microscope with high magnification capacity between 100 to 1000 or more. High magnification is required in microscope to view an object which is very small and can not be viewed by conventional simple microscope or hand-held microscope. (eg. Blood cell, chromosome etc.). Because of this atleast 100x and above magnification is required which is available only in compound microscope which are bulky and involve complications in construction and use.

None of the presently available hand held microscope can achieve such high magnification as that of the micro microscope. The micro microscope of the invention therefore provides for such high magnification capacity of 100x to lOOOx or more in micro/pocket size and hand heldable microscope which would be convenient to use and carry especially for students and field workers.

Reference is invited to Figs. 14A, to 14D which show the micro microscope without the in-built light source with portable support stand in accordance with the invention. As illustrated in said figures the micro microscope essentially comprise of the view finder (9A) which is secured with respect to a top platform (5A) of the support stand, clip means (4A) also secured with respect to the top platform (SA) provide for supporting of the object on slide for viewing through the view point. A base platform (1OA) supports adjustable mirror (14A) supported on bracket means (16A/15A). The top platform (SA) and the bottom platform (1OA) are connected by means of a pair of collapsible legs each said collapsible legs being comprised of a first member (l lA) and a second member (12A), one end of the first member hinged to said top platform (5A) while its other end is hinged to an end of the second member (12A), the other end of said second member 12A) being connected to the base platform (1OA). In the completely collapsed condition the first and second member bend along its intermediate binge (13A) ta be disposed therebetween said top and bottom platforms. Preferably, the length of the first member is less as compared to that of the second member to favour compact collapsing of the leg means. Such a completely collapsed condition of the stand is shown in Fig. 14C.

For use of the stand, the collapsible legs (1 lA/12A) are opened/stretched such as to select a desired distance between the top (5A) and bottom (1OA) platforms. One such selectively height in the partially collapsed condition is shown in Fig. 14D. The maximum possible height of the stand being the vertical height of the first and second members in alignment with one another as shown in Fig. 14A and 14B. Thus it is possible to adjust the height of the micro microscope by simply bending the first and second members along with the intermediate hinge (13A). The connection of the first/second members to the top/bottom platform can be preferably through bracket and nut & bolts/knob screw means while the connection between the members at the intermediate hinge can be by tight rivet or knob screw joints with washer means to

favour tightening and release of the hinge points to achieve the collapsible motion while closing the stand or adjusting the height of the top platform with respect to the bottom platform.

Additionally provision of the hinge connection of the first member to the top platform and the second member to the base platform also provided for angular disposition of the top platform and/or the base platform to facilitate convenient and user friendly viewing of the object through the micro microscope placed on the portable stand.

The shape and size of the top platform and the bottom platforms, of the hinge means and the first and second members are selected to favour a compact complete collapsing of the support structure when the stand is not in use.

While the above embodiment of the micro microscope with the portable stand is discussed in relation to Figs. 14A to 14D showing the stand comprising of two collapsible legs, it is also possible that such a stand may comprise of one or more number of collapsible legs depending upon the rigidity, strength and end-user requirements.

Moreover, while the embodiment illustrated in 14A to 14D show the stand provided with the micro microscope comprising only of the view finder without the in- built light housing, it is also possible that the micro microscope of the invention with in- built light housing be also provided with such collapsible stand. Such an illustration of a micro microscope with in-built light source housing provided with such collapsible stand is shown in corresponding Figs. 15A to 15D. The construction and functioning of the stand of this embodiment of the micro microscope with in-built light of Figs. 15A to 15D is also the same as that discussed in relation to 14A to 14D of the microscope without the in built light source.

Reference is now invited to Fig. 16 which shows an embodiment of the system for micro-photograph for taking photographic images of objects through micro microscope of the invention. As shown in fig. 16 the micro microscope (MM) having in-built light source is placed on a table/platform and a SLR camera (CA) with lens removed from the lens mount spaced apart and placed such that the view point (IA) of the micro microscope and the lens mount (26A) of the SLR camera are in the same line.

As already discussed earlier the micro microscope comprise said in built light having a

top (5A) and a bottom (IOA) clip means (4A) holding the slide (44A) having the object with the view finder (9A) having the view point (IA) held by height adjustable knob means (2A). The SLR camera (24A) comprise of conventional feature comprising tens mount (26A) with the lens removed, camera viewer (27A) shutter means (28A) and shutter speed control means (57A).

For photographs, the micro microscope is put on its built-in light mode operation with the object held in position on slide (44A). All external lights are put off and the system maintained under dark condition. Adjusting knob (2A) is used for adjustment of the final image of the object. The shutter release is then attached to the camera and the shutter speed fixed in position B to open the camera shutter for long time. As soon as the sharper magnified image is viewed through camera, the camera is clicked for photograph of the image.

Preferably, to achieve dark conditions, the lens mount of the SLR camera and atleast the view point of the micro microscope is covered by bellow means (55A) as shown in Fig. 17. For the purpose the bellow ends are provided with adapters 54A and 56A.

The sharp and high magnification in the order of atleast 100 to 1000x o more achieved by the micro microscope of the invention can thus be used to obtain exceptionally clear photographic representations of magnified objects using SLR camera as discussed above. In this regard reference is invited to accompany figures 17A to 17F which illustrate same photographic images of about 1000x magnification of various objects obtained using such micro photographic system including the micro microscope of the invention.

Reference is now invited to accompanying figures 18A to 18E which illustrate in section the construction of telescope having the micro microscope in accordance with the present invention.

As would be evident from Fig. 18A and 18B the telescope is basically comprised of a cylindrical tubular body portion (58A) provided at an end with a telescopic objective (59A) comprising a convex lens (67A) and its other end provided with the view finder (60A) comprising the view point (66A) an aperture means (61A) provided internally in alignment therebetween said objective and the view finder for better and convenient viewing of the object. Telescope objective (59A) is preferably in

the form of an adjustable tubular member having said convex lens (67A). Threads (64A) provided internally in the said tubular member provided for releasable connection of the objective to corresponding external threads at one end of the cylindrical main body (58A) of the telescope. Also such thread connection provide for adjustment of the distance of the objective from the view finder for sharper images. Likewise the objective, the view finder is also preferably provided in a tubular member having internal thread (65A) which provide for releasable connection with corresponding external thread (63A) at the other end of the cylindrical main body (58A) of the telescope. Such threaded connection also provide for adjustment of the distance therebetween the view point (66A) of the view finder (60A) and the objective (67A) for sharper images through the telescope.

Preferably, acromatic multiple coating is provided on the objective to improve colour quality of image, reduce flare, ghost and thereby improve image contrast. Such acromatic coating also makes the view finder image brighter by transmitting more light on the view point.

The micro microscope of the invention can also be used for magnified viewing of opaque objects. The modified view finder of the invention for use in such purpose is as illustrated in figures 19A and 19B. As shown in said figures two nos. of very small lamos (Q) are fitted inside the view finder. Two nos. optical condensers (P) are fitted at the bottom part of the lamps in such way the convergent light rays hits on the object to illuminates the opaque object The magnified image of the object can be viewed from the view point (B). The power supply of the lamps are to be supplied by the battery chamber through the on-off switch.

It is also possible to use the micro microscope of the invention for geological uses. For the purpose two nos. optical polariser thin films are used. One film is fitted on the top of the view point and other one at the aperture (AP). Both the thin polariser can rotate in 360° as per user's requirement to cut the light source. All other internal features are same as per the micro microscope discussed herein.

It is thus possible by way of the present invention to provide for an extremely small sized micro microscope having high magnification capacity which would be light weight, portable and thus have extensive and wide application. In particular, the micro microscope of the invention can be used for various high magnification optical devices

such as micro photography, astronomical telescopes etc. Importantly, the micro microscope utilizes simple constructional gadgets which readily available making its provisions simple and cost effective.

While the micro microscope of the invention is described with relation to non- limiting exemplary embodiments hereinbefore, the novel construction of the micro microscope can be of various other embodiments not specifically dealt with herein and all such variation and the scope of the invention should cover such variations within the ambit of the present disclosure of the micro microscope.