Under exposure and fade indicator

Details Under exposure and fade indicator Under exposure and fade indicator

1975-12-24

1977-03-29

Smith, Alfred E.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

354 60L, 352 91C, H01J 3912, G03B 2136

Patent

active

040151190

ABSTRACT:
To inform the operator of a motion picture camera of under-exposure and the status of a fade operation, an indicator circuit is provided. The indicator circuit is in circuit with an automatic exposure control system which adjusts the diaphragm for correct film exposure under varying light conditions and an electronically controlled fade system which adjusts the diaphragm for a fade-in and fade-out sequence independently of the varying light condition on the subject.

REFERENCES:
patent: 2518717 (1950-08-01), Rath
patent: 3495515 (1970-02-01), Reimann
patent: 3594088 (1971-07-01), Akiyama et al.
patent: 3623989 (1971-11-01), Mayr et al.
patent: 3664244 (1972-05-01), Painton

Affiliated with

Also associated with

Rating

Under exposure and fade indicator does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-550276