Binoculars with automatic focusing system

Details Binoculars with automatic focusing system Binoculars with automatic focusing system

1979-12-28

1981-04-21

Henry, Jon W.

350 47, G02B 711, G02B 2300

Patent

active

042629888

ABSTRACT:
Binoculars including an automatic focusing system with light entry windows on both sides of the binoculars provided outwardly of the objective lenses. Movable and fixed reflecting elements are disposed inwardly of the light entry windows both of which direct incoming light images onto a focusing detecting module. The movable reflector is oscillated back and forth scanning the image reflected thereby laterally with respect to the stationary image reflected by the fixed reflector. An output control signal is produced when the two images are in alignment with one another and the ocular lenses are moved in accordance with this signal to properly focus the binoculars.

REFERENCES:
patent: 4160904 (1979-07-01), Wilwerding
patent: 4183640 (1980-01-01), Abe
patent: 4186300 (1980-01-01), Kozakai

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