Document Type and Number:
Japanese Patent JPS4895826
Kind Code:
A
Abstract:
This invention is concerned with an automatically adjustable focusing system wherein a radiating source for making a range mark on an object and a light receiving means adapted to form an image by receiving a radiant ray reflected from the object from the radiant rays of said radiating source, are arranged in a spaced relation with respect to each other so that both optical axes are parallel, and at least a part of said light receiving means or a separate member functions to intermittently project a flux of the rays reflected from the object onto a photoelectric conversion element, whereby an output signal of said photoelectric conversion element is compared with another reference signal to detect a range of the object.
Application Number:
JP2877272A
Publication Date:
December 08, 1973
Filing Date:
March 22, 1972
Export Citation:
International Classes:
G03B13/36; G01C3/08; G02B7/32; (IPC1-7): G02B7/04