Binocular optical system with automatic focusing mechanism

Details Binocular optical system with automatic focusing mechanism Binocular optical system with automatic focusing mechanism

1984-01-19

1987-03-17

Henry, Jon W.

350564, 354405, G02B 711, G02B 2302, G02B 706

Patent

active

046502971

ABSTRACT:
Auto-focus binoculars in which only the center portion of the image viewed through the ocular lenses of the binoculars is used for focusing. Light admitting windows are formed adjacent right and left objective lenses of the binoculars. Light from the light admitting windows is reflected by fixed and movable reflex members through long focal length lenses onto a focus detecting module. The movable one of the reflex members is reciprocated by a motor until an output signal from the focus detecting module indicates that focusing has been achieved.

REFERENCES:
patent: 4083056 (1978-04-01), Nakamura et al.
patent: 4136939 (1979-01-01), Abe
patent: 4262988 (1981-04-01), Ishibai et al.
patent: 4284325 (1981-08-01), Ishibai et al.

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