Automatic focus adjusting apparatus

Details Automatic focus adjusting apparatus Automatic focus adjusting apparatus

1989-10-20

1992-01-07

Perkey, W. B.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

2502012, G03B 1336, G02B 728

Patent

active

050795821

ABSTRACT:
An automatic focus adjusting apparatus for automatically adjusting a focus condition of an objective lens, the automatic focus adjusting apparatus repetitively effecting focus detection, in-focus judgement, and lens driving. If the lens cannot be regarded as being in focus as a result of a standard focus detection, then on the one hand, when the deviation from the in-focus point is small, lens driving is effected and in-focus is judged to quickly arrive at a judgement of in-focus, and on the other hand, when the deviation from the in-focus point is large, a judgment of in-focus based on the deviation from the in-focus point being small is inhibited to thereby enable the lens to be fully driven and a standard in-focus judging operation to be accomplished.

REFERENCES:
patent: 4200378 (1980-04-01), Shenk
patent: 4335942 (1982-06-01), Tsunekawa et al.
patent: 4387975 (1983-06-01), Araki
patent: 4445761 (1984-05-01), Ishikawa et al.
patent: 4470676 (1984-09-01), Kinoshita et al.
patent: 4477167 (1984-10-01), Ishikawa et al.
patent: 4492448 (1985-01-01), Ishikawa et al.
patent: 4509842 (1985-04-01), Taniguchi et al.
patent: 4536072 (1985-08-01), Taniguchi et al.
patent: 4538892 (1985-09-01), Sakai et al.
patent: 4545664 (1985-10-01), Sakai et al.
patent: 4588278 (1986-05-01), Horigome
patent: 4593988 (1986-06-01), Akiyama et al.
patent: 4641942 (1987-02-01), Sakai et al.
patent: 4687915 (1987-08-01), Sakai et al.

Affiliated with

Also associated with

Rating

Automatic focus adjusting apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic focus adjusting apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic focus adjusting apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-825338