Instantaneous exposure control for film

Details Instantaneous exposure control for film Instantaneous exposure control for film

1975-08-04

1979-07-17

Adams, Russell E.

Photocopying

Projection printing and copying cameras

Illumination systems or details

355 69, 355 77, 355 83, G03B 2774, G03B 2778

Patent

active

041613635

ABSTRACT:
The exposure of film which changes its transmissivity as a function of the quantum of light to which it is subjected is controlled by sensing the intensity of the light transmitted through the film. From the sensed light the change in the light transmissivity of the film is determined and when that change has reached the desired level the exposure of the film is terminated. The exposure is instantaneously controlled and terminated only after the desired exposure level has been reached irrespective of the time required.

REFERENCES:
patent: 3077401 (1963-02-01), Grinten et al.
patent: 3426357 (1969-02-01), Paulus
patent: 3790789 (1974-02-01), Takahashi et al.

Affiliated with

Also associated with

Rating

Instantaneous exposure control for film does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-316239