Radiant energy – Ionic separation or analysis – Static field-type ion path-bending selecting means
Patent
1979-10-02
1981-07-21
Hix, L. T.
Radiant energy
Ionic separation or analysis
Static field-type ion path-bending selecting means
250204, G03B 1320, G03B 136
Patent
active
042794846
ABSTRACT:
An apparatus for measuring a range to a subject comprising a first optical system for forming a first stationary image of the subject on a first photosensitive element such as a photosensor array, a second optical system for forming a second image of the subject on a second photosensitive element, said second image being shifted with respect to the first stationary image by rotating a rotatable scanning mirror of the second optical system, and a pin hole member having first and second pin holes formed therein and arranged in front of the first and second photosensitive elements in such a manner that the pin hole member can be moved in a direction parallel to optical axes of the first and second photosensitive elements as well as in a plane perpendicular to the optical axis so as to change a size and a position of a range measuring area with respect to a field of view. When the apparatus is installed in an automatically focusing camera, the scanning mirror is rotated in cooperation with a camera lens which is brought into an in-focused position with respect to the subject when the first and second images impinging upon the first and second photosensor arrays are most alike.
REFERENCES:
patent: 2805608 (1957-09-01), Leitz
patent: 3536408 (1970-10-01), Norwood
patent: 4072969 (1978-02-01), Cheavin
patent: 4159169 (1979-06-01), Sato
Hix L. T,.
Olympus Optical Co,. Ltd.
Perkey William B.
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