Photographic lighting system using incident light meter

Details Photographic lighting system using incident light meter Photographic lighting system using incident light meter

1993-04-14

1995-01-24

Pascal, Robert J.

Wave transmission lines and networks

Automatically controlled systems

With control of equalizer and/or delay network

333157, H01D 118

Patent

active

053846168

ABSTRACT:
A photographic lighting system for use with a camera provides fill light from the direction of the camera to alleviate shadows in a photographic image obtained by the camera. The photographic lighting system includes an incident light sensor for sensing the incident light intensity on a subject to be photographed, an electric light for directing fill light toward the subject, and a control circuit for controlling the intensity of the fill light provided by the electric light in response to the sensed incident light intensity. The fill light is increased in intensity as the incident light intensity increases. The control circuit can also receive a distance input representative of the distance between the electric light and the subject and controls the fill light in response to the distance input such that the fill light intensity at the subject is substantially independent of the distance. A sensitivity input to the control circuit permits the fill light intensity to be compensated for the sensitivity of the camera.

REFERENCES:
patent: 3962600 (1976-06-01), Pittman
patent: 4158132 (1979-06-01), O'Dell
patent: 4368406 (1983-01-01), Kruzich et al.
patent: 4587457 (1986-05-01), Lind
patent: 4634933 (1987-01-01), Kamon et al.
patent: 4658129 (1987-04-01), Fan
patent: 4666280 (1987-05-01), Miyawaki et al.
patent: 4959755 (1990-09-01), Hochstein
patent: 5198855 (1993-03-01), Iwai

Affiliated with

Also associated with

Rating

Photographic lighting system using incident light meter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Photographic lighting system using incident light meter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photographic lighting system using incident light meter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1471035