Computer controlled light with continuously variable color temperature, color, magnification, focus, and position

• US 5,143,444 A
• Filed: 05/07/1991
• Issued: 09/01/1992
• Est. Priority Date: 04/26/1989
• Status: Expired due to Fees

• Current Assignee: Gary A. Shields
• Original Assignee: Gary A. Shields
• Inventors: Shields, Gary A.
• Primary Examiner(s): Husar, Stephen F.
• Application Number:
  US07/696,818
• Time in Patent Office: 483 Days
• Field of Search: 362/16, 362/17, 362/18, 362/268, 362/293, 362/294, 362/2
• US Class Current: 362/293
• CPC Class Codes: F21W 2131/406 for theatres, stages or film studios
• CPC Class Codes: H05B 47/155 Coordinated control of two or more light sources

Abstract

A lighting system is described having an electronic means for controlling the color, color temperature, magnification and focus in response to predetermined signals from a computerized system. A wide spectrum light beam having a wavelength of from 380 nm to 700 nm is passed through a heat absorbing condenser to control the predetermined color temperature thereof and said portion of the beam is separated into a first color beam having a wavelength of from 445 nm to 450 nm, a second color beam having a wavelength of from 555 nm to 570 nm and a third color beam having a wavelength of from 525 nm to 535 nm. The separated color beams are maintained at substantially equal focal length and the intensity of the respective color beams varied in response to an electronic signal. The color beams are then combined to form a composite beam of predetermined color. The color and intensity of the resulting beam is thereby more accurately predetermined.

Claims

1. A lighting system for controlling the colour, colour temperature, magnification and focus of a light beam comprising:

means for providing a wide spectrum light beam having a wavelength of from 380 nm to 700 nm;

a heat absorbing condenser for controlling the predetermined colour temperature of said beams;

a liquid crystal display panel having a matrix of windows arranged in groupings of three windows, each passing varying and predetermined amounts of blue light, red light and green light respectively, the windows of each said grouping being in such close proximity as to condense light beams passing therethrough into a single visible beam;

means for passing said beam through at least one grouping of windows on said liquid crystal display panel, and

a lens system for projecting the beams from said grouping to form a composite beam of predetermined colour.