Abstract: An optically active color filter for controlling the color of light produced by a light source. The color filter includes an optically active device positioned between a linear polarizer and an adjustable position linear polarizer whose orientation can be controlled mechanically or electrically. In a preferred embodiment, the optically active device contains a liquid optically active substance such as high maltose corn syrup. The optically active color filter may be used for controlling the color of a light source such as a stage light or spotlight and in other applications requiring a device for controlling the color of a light source.
Type:
Grant
Filed:
September 18, 2003
Date of Patent:
January 30, 2007
Assignee:
Vision Quest Lighting, Inc.
Inventors:
Torrey M. Bievenour, Lawrence Lieberman