Focus detecting device having blur detecting function

Details Focus detecting device having blur detecting function Focus detecting device having blur detecting function

1987-05-26

1988-09-20

Adams, Russell E.

354430, G03B 300

Patent

active

047721170

ABSTRACT:
A focus detecting device having a function of detecting blur, including a focus detecting member, a detection member which receives two image signals of an identical object obtained in time series by an identical optical system so as to detect degree of coincidence between the two image signals, and a selector member for selecting whether operation of the focus detecting member and the selection member is performed continuously or operation of only the focus detecting member is performed.

REFERENCES:
patent: 4218119 (1980-08-01), Schickedanz
patent: 4264161 (1981-04-01), Hosoe et al.
patent: 4474447 (1984-10-01), Kawabata et al.
patent: 4527053 (1985-07-01), Kinoshita et al.
patent: 4609274 (1986-09-01), Iwashita et al.
patent: 4668084 (1987-05-01), Suzuki et al.
patent: 4690536 (1987-09-01), Nakai et al.

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