Optical apparatus having a function to adjust the diopter

Details Optical apparatus having a function to adjust the diopter Optical apparatus having a function to adjust the diopter

1994-12-16

1996-10-08

Perkey, W. B.

Photography

With viewfinder

351211, G03B 1302, A61B 310

Patent

active

055636705

ABSTRACT:
An optical apparatus having an improved function to adjust the diopter thereof. The optical apparatus includes an observation optical system and a control device for detecting information relating to an age of an eye and controlling the optical system based on the detection result.

REFERENCES:
patent: 4181408 (1980-01-01), Senders
patent: 4300818 (1981-11-01), Schachar
patent: 4402325 (1983-09-01), Sawa
patent: 4431278 (1984-02-01), Nohda
patent: 4619505 (1988-10-01), Hache et al.
patent: 4828381 (1989-05-01), Shindo
patent: 4889422 (1989-12-01), Pavlidis
patent: 5071245 (1991-12-01), Fukuma et al.
patent: 5182443 (1993-01-01), Suda et al.
patent: 5225862 (1993-07-01), Nagano et al.

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