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JP4239248B2 |
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JP4233062B2 |
Successively from an object side, a stop, a biconvex lens, a biconcave lens, a biconvex lens, and a meniscus lens having a convex surface directed onto the image side are disposed, while the image-side surfaces of the second and third le...
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JP4223936B2 |
In a projection optical system for use in an image projection apparatus illuminating an image display panel forming an image in accordance with a modulating signal with illumination light from a light source, the projection optical syste...
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JP4219645B2 |
An exposing apparatus for a microlens array allows for easy alignment and attains high accuracy. An exposing method for a microlens array attains high accuracy and high light efficiency. The exposing apparatus for a microlens array inclu...
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JP4207248B2 |
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JP2008309988A |
To obtain a wide-angle projection lens having high projection performance while securing a long back focus, and also, capable of using an inexpensive light reflection mirror as an optical path bending component, and whose manufacturing c...
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JP2008309990A |
To obtain a wide-angle projection lens having high projection performance while securing a long back focus, capable of using an inexpensive light reflection mirror as an optical path bending component, and whose manufacturing cost is red...
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JP2008309989A |
To obtain a wide-angle projection lens having high projection performance while securing a long back focus, and also, capable of using an inexpensive light reflection mirror as an optical path bending component, and whose manufacturing c...
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JP4197994B2 |
An image-taking apparatus has an image sensor for converting an optical image into an electrical signal, and a taking lens system for forming the optical image on the light-receiving surface of the image sensor. The most object-side surf...
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JP2008292651A |
To provide an imaging lens which is compact, has excellent optical characteristics and comprises two lenses.The imaging lens comprises, in order from an object side to an image surface side, an aperture S1, a meniscus first lens L1 which...
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JP2008292965A |
To reduce the number of components and thereby to reduce cost of an optical device, which is composed of a collimator lens for converting light emitted from an optical fiber to collimated light, a line condenser lens for condensing only ...
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JP4188920B2 |
The universal input device provides a common user interface for a variety of different computing platforms including printed documents. Using the present system, one may use the universal input device to control various computing devices...
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JP4189754B2 |
A zoom lens which can be formed with a reduced overall length while physically necessary factors including a long back focus for allowing arrangement of a color separating prism therein and a telecentric property and besides can correct ...
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JP2008275832A |
To provide an imaging lens whose depth of focus is deep and whose error sensitivity is low.The imaging lens satisfies conditional expression 0.016/f0.018, and is equipped with a first lens L1, a second lens L2 and a third lens L3 arrange...
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JP4173210B2 |
Each of first and second lenses, which are in meniscus forms with concave surfaces opposing each other, is made as a plastic lens having at least one aspheric surface, and the whole lens system has a three-sheet lens configuration, there...
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JP2008242397A |
To provide an imaging lens which is compact and whose chromatic aberration and coma aberration or the like are satisfactorily corrected.The imaging lens is constituted of a first aperture diaphragm SD1 forming a predetermined aperture, a...
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JP2008241999A |
To provide an imaging lens having high imaging performance, while being compact in constitution.The imaging lens is equipped with a first lens G1 that is a positive meniscus turning its convex surface to an object side, a second lens G2 ...
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JP4159936B2 |
A relay lens is provided in an illumination system for use in microlithography. The relay lens can be used to uniformly illuminate a field at a reticle by telecentric light beams with variable aperture size. The relay lens can include fi...
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JP2008209721A |
To provide an imaging lens that can maintain optical performance and achieve size and weight reduction.The imaging lens comprises, in order from an object side to an image surface side, a first lens 2 that is a meniscus lens having a pos...
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JP4147295B2 |
Alignment circuity and calibration method for a scanning interferometer. Phase shifts are introduced into the alignment servo to maximize overall modulation efficiency.
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JP2008534998A |
A wide angle projection lens include a first lens group of negative refractive power that has at least one aspheric surface. The wide angle projection lens can output an image at a half field angle of at least 45°, where the image has s...
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JP4139159B2 |
A lens for reading an original, comprises five lenses as a whole including two positive and two negative lenses, an aspherical surface provided on at least one surface of the five lenses, a construction of four lens groups for five lense...
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JP2008180870A |
To provide a small-sized lens which is constituted of three lenses, which is small in size and has high resolution, which excels in processibility and assemblability, and all the lenses of which are made of optical plastic.The small-size...
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JP4130336B2 |
An imaging lens system includes, in the named order from the side of an object toward an image surface, a light amount diaphragm, a first lens having a positive power with a main power on the side closer to the image surface, a meniscus-...
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JP2008164720A |
To provide a relay optical system capable of correctly adjusting the position and size of a beam waist formed in a wavelength conversion unit, and also to provide a wavelength conversion device using the optical system.A waist diameter a...
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JP4105660B2 |
The present invention provides a compact, highly reliable optical module in which a light-emitting element and optical modulator element that differ from each other in thermal expansion coefficient are mounted in one casing. In the optic...
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JP4094301B2 |
A reference lens for an interferometer is constructed so that light transmitted by a partially reflecting reference spherical surface may be converged, toward a focal point that coincides with the center of curvature of the reference sph...
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JP2008122902A |
To provide an imaging lens that can maintain optical performance and achieve size and weight reduction.The imaging lens comprises, in order from an object side to an image surface side, a first lens 2 that is a meniscus lens having a pos...
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JP2008116693A |
To provide a double focus taking lens with high performance and a taking lens available for the double focus taking lens, while shortening an optical length.The taking lens is composed of a first lens system including a first lens with a...
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JP4088830B2 |
The total angular aperture is no less than 12.8 degrees . Spacing of the entrance pupil from the object plane on the illumination side, is 100-400 mm. Edge field inclination of the outward beam, relative to the optical axis in the object...
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JP4079630B2 |
A compact optical system includes a reduced number of lens elements with a bendable optical path and so is compatible with miniature image pickup devices. The image pickup lens includes, in order from its object side, a first lens elemen...
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JP2008089997A |
To provide a photographic optical system which is made compact, has a wide viewing angle and a large aperture, also has high performance regardless of a subject distance and further is made cost effective, a photographic lens unit and a ...
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JP2008052198A |
To provide an image reading lens that is small and has a high aperture efficiency (95% or more) and a wide angle of view (with a half angle of view of 25 or more) with various aberrations such as curvature of field being sufficiently cor...
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JP4055998B2 |
A ranging apparatus which determines distances to objects by using planar positions of the objects in images which are obtained by cameras which take the images, plural distortion correction tables used to correct distortion of images ta...
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JP4057140B2 |
An image-forming lens, of the retro-focus type, having only two lens elements is disclosed. By making the object-side of the first lens element, in order from the object side, be a convex surface, and by satisfying two specified conditio...
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JP4057135B2 |
A collimator lens comprises, successively from a parallel luminous flux side, a positive lens, a cemented lens made of negative and positive lenses, a positive lens, and a negative lens, and satisfies a predetermined conditional expressi...
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JP4054094B2 |
An electronic endoscope includes an objective lens system in which chief rays directed toward the maximum image height are inclined outwardly with respect to the optical axis and a solid-state image sensor which has a light-receiving sur...
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JP2008040317A |
To provide a lens for reading images that is compact and high in numerical aperture (100%), with various aberrations such as the curvatures of field are fully corrected, with a wide-field angle (half-field angle of 25 or larger), and als...
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JP2008020513A |
To provide a compact imaging lens excellent in optical performance, and an imaging apparatus equipped therewith.The single focus imaging lens 10 is constituted of a first lens (L1) turning its convex surface to an image side and having p...
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JP4032668B2 |
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JP4032667B2 |
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JP2007333966A |
To provide an imaging lens where various aberrations, particularly, distortion, are satisfactorily corrected, and suitable as an imaging lens for a digital camera and a digital still camera, and to provide an imaging apparatus using the ...
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JP2007322968A |
To provide a finder optical system obtaining a prescribed observation magnification and an eye relief of sufficient length by appropriately setting an erect image forming member, and to provide an optical apparatus equipped with the find...
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JP2007322844A |
To provide an imaging lens which is compact and bright such that an F value is 2.0 or less and which is suitable for a mobile camera mounted on a cellular phone or the like. A first lens 1 having inflection surface shape where the direct...
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JP4019607B2 |
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JP2007310046A |
To provide a compact imaging lens suitable for a mobile camera. The imaging lens includes: an aperture diaphragm SD having a predetermined aperture; a first plane-convex lens 1 having positive refractive power; a second meniscus lens 2 h...
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JP4015851B2 |
A luminous flux, from one conjugate surface (A), having an opening angle of at least 10° sequentially passes through a first optical system (30) having a luminous flux convergent action in the vicinity of its reference axis and a second...
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JP4013913B2 |
A mother glass composition for graded index lenses, comprising the following glass components in mol %: 40<=SiO2<=65, 1<=TiO2<=10, 0<=MgO<=22, 2<=Li2O<=18, 2<=Na2O <=20, 6<=Li2O+Na2O<=38, and from 0.1 to 15 mol % of any two or more of Ca...
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JP2007531918A |
An aperture stop assembly for use in an electromagnetic radiation system may include an aperture stop made of a material at least partly transparent to an applied electromagnetic radiation. At least a portion of the aperture stop may be ...
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JP4001471B2 |
An image pickup lens system includes a lens 1 of a meniscus shape having a first face as a convex face, and a diaphragm 2 disposed on an object side of the lens 1. The lens 1 meets the following conditions: Y'/fl equal to or larger than ...
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