Camera range finder

Details Camera range finder Camera range finder

1984-02-10

1986-05-06

Adams, Russell E.

G03B 300

Patent

active

045868069

ABSTRACT:
The invention relates to an active type camera rangefinder for automatic focus. A beam of infrared light is emitted towards an object and the light reflected back from the object is received by a plurality of photo transistors. An automatic gain control adjusts the sensitivity of the phototransistors. An RC circuitry delays operation of the automatic gain control to eliminate low-frequency ripples caused by fluorescent lamps.

REFERENCES:
patent: 3906389 (1975-09-01), Matsumoto et al.
patent: 3999192 (1976-12-01), Hosoe et al.
patent: 4477168 (1984-10-01), Hosoe
patent: 4494848 (1985-01-01), Ogawa
patent: 4497560 (1985-02-01), Nagaoka et al.
patent: 4502773 (1985-03-01), Gaewsky et al.

Affiliated with

Also associated with

Rating

Camera range finder does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1571832