Focus detecting system

Details Focus detecting system Focus detecting system

1981-10-21

1984-01-31

Adams, Russell E.

G03B 708

Patent

active

044286520

ABSTRACT:
A focus detecting system detects an image formation state of an image of an object by processing a time-serial output from a photoelectric transducer element through a high-pass filter. In order to suppress the outputs from the high-pass filter corresponding to the time-serial signal at the initial moment of light reception by the photoelectric transducer element or immediately thereafter, an amplifier is provided which performs the initial setting of the high-pass filter. The input and output ends of the amplifier are connected to parts of the high-pass filter, and the output impedance of the amplifier may be changed in response to a signal from an external source.

REFERENCES:
patent: 2831057 (1958-04-01), Orthuber
patent: 3896304 (1975-07-01), Aoki et al.
patent: 4368978 (1983-01-01), Tsunekawa et al.

Affiliated with

Also associated with

Rating

Focus detecting system does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2343426