Document Type and Number:
Japanese Patent JPS4990529
Kind Code:
A
Abstract:
A distance detecting device utilizable in an optical device such as a camera and the like requiring focusing operation of the optical system thereof. The detecting device enables the adjustment of the relative optical length between the group of light receiving elements arranged adjacent to the image forming plane of the object to be measured by the distance measuring optical system and the distance measuring optical system. The detecting device is characterized in that the output of each of the light receiving elements of the groups is introduced through an electric switching device for effecting the time seriation of the outputs of the respective light receiving elements into a common signal processing circuit, so as to adjust the relative optical length by means of a motor provided in responsive relationship to the output of the signal processing circuit thereby permitting the focusing of the image on the groups of the light receiving elements to be made to the most proper condition.
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Application Number:
JP392273A
Publication Date:
August 29, 1974
Filing Date:
December 27, 1972
Export Citation:
International Classes:
G01C3/06; G01B11/00; G01C3/00; G01C3/08; G02B7/30; G03B13/36; H04N1/19; (IPC1-7): G02B7/11
Domestic Patent References:
| JPS473594Y1 | 1972-02-07 | |||
| JPS409380B1 | ||||
| JPS4113669B1 | ||||
| JPS4116224B1 | ||||
| JPS476983B1 |