Light projector having a controllable intensity of illumination

Details Light projector having a controllable intensity of illumination Light projector having a controllable intensity of illumination

1986-02-14

1987-08-18

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 98, 358228, H04N 718

Patent

active

046880879

ABSTRACT:
The light projector provided with a system for setting the intensity of illumination for a cavity which is being filmed by means of a video camera, and from which the picture is shown on a monitor screen. The video signal from the camera is supplied as an actual value to a comparator which, as a function of the signal and of an adjustable reference value, drives a servo-motor connected to its output side, which adjusts the intensity of illumination within the cavity by means of a shutter situated in the beam path of the light projector.

REFERENCES:
patent: 4202014 (1980-05-01), Gilligan et al.
patent: 4423436 (1983-12-01), Kimura
patent: 4489350 (1984-12-01), Kimura
patent: 4516172 (1985-05-01), Miyata et al.
patent: 4584610 (1986-04-01), Mizokami et al.
patent: 4599654 (1986-07-01), Monroe

Affiliated with

Also associated with

Rating

Light projector having a controllable intensity of illumination does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Light projector having a controllable intensity of illumination, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light projector having a controllable intensity of illumination will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1121055