The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 18, 1990
Filed:
Aug. 15, 1989
Dennis Solomon, Yarmouth Port, MA (US);
Altman Stage Lighting Co., Inc., Yonkers, NY (US);
Abstract
A color changer system including a pair of slidable color filter plates or a pair of rotatable color filter disks positioned on opposed side of a beam aperture through which a beam of white light passes. The pair of filter plates or filter disks are simultaneously movable or rotatable, respectively, across the beam aperture orthogonal to the beam axis so as to enhance a particular color. The movement of the filter plates or disks are movable into the beam symmetrical to the center of the beam aperture so that distribution of color saturation of the beam is symmetrical about the center of the beam aperture during movement of said first and second color filter means. Progressive variable filtering regions defining a plurality of color enhancing capacities either included diffused color filtering material or dichroic color filtering material. When the dichroic color filtering material is used, alternating clear and dichroic filtering strips are located in each filtering region. When the pair filter plates or filter disks overlap, the clear and dichroic filtering strips of each pair complement so that the lightwaves of the beam are filtered through only one of the pair of plates or strips.