Apparatus with focus detection means and sight axis detection me

Details Apparatus with focus detection means and sight axis detection me Apparatus with focus detection means and sight axis detection me

1994-12-15

1996-03-05

Adams, Russell E.

354410, 354219, 354 62, G03B 1336

Patent

active

054972108

ABSTRACT:
Apparatus with focus detection circuitry and sight axis detection circuitry includes multi-point focus state detection circuitry for detecting focus states of an objective lens for a plurality of areas in a field of view. Sight point detection circuitry is provided for detecting a sight point state (e.g., visual axis) of an observer. Control circuitry is provided for executing, in parallel, a detection operation of the multi-point focus state detection circuitry and a detection operation of the sight point detection circuitry.

REFERENCES:
patent: 3936849 (1975-02-01), Tsujimoto
patent: 4180309 (1979-12-01), Miyata et al.
patent: 4574314 (1986-03-01), Weinblatt
patent: 4828381 (1989-05-01), Shindo
patent: 5036347 (1991-07-01), Tsunekawa et al.
patent: 5182443 (1993-01-01), Suda et al.
patent: 5214466 (1993-05-01), Nagano et al.

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