Binoculars with extraction of a portion of light rays

Details Binoculars with extraction of a portion of light rays Binoculars with extraction of a portion of light rays

1996-05-15

1998-01-06

Henry, Jon W.

Optical: systems and elements

Compound lens system

Telescope

359425, 2502014, G02B 2300, G02B 2710, G02B 706, G02B 709

Patent

active

057061297

ABSTRACT:
A pair of binoculars includes a first optical system; a second optical systems; a light rays separators that extracts from the first optical system a portion of light rays that pass through the first optical systems; a device for examining the extracted light rays; a device for adjusting parts of the first and second optical systems based on a results of the examination of the extracted light rays; and a light reducer located in the second optical system for separating light rays equivalent to the light rays extracted by the light rays separator from the light rays passing through the second optical system.

REFERENCES:
patent: 4293187 (1981-10-01), Ishibai et al.
patent: 5126549 (1992-06-01), Yamada
patent: 5572361 (1996-11-01), Kamiya et al.

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