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1. (WO2001037032) AN OPTICAL SYSTEM FOR CREATING COLOURED FIELDS OF LIGHT AND COMPONENTS THEREFOR

Pub. No.:    WO/2001/037032    International Application No.:    PCT/DK2000/000642
Publication Date: Sat May 26 01:59:59 CEST 2001 International Filing Date: Tue Nov 21 00:59:59 CET 2000
IPC: F21S 10/02
F21V 9/40
G02B 27/00
G02B 5/00
G02B 7/00
Applicants: MARTIN PROFESSIONAL A/S
RASMUSSEN, Niels, Jørgen
GLAVIND, Mads
Inventors: RASMUSSEN, Niels, Jørgen
GLAVIND, Mads
Title: AN OPTICAL SYSTEM FOR CREATING COLOURED FIELDS OF LIGHT AND COMPONENTS THEREFOR
Abstract:
Units for projection of profiled images and for floodlighting suffer from a tradeoff between the quality of the illuminated field and efficiency. The hue, saturation, and intensity must be continuously controllable, and the quality of the illuminated field must be even. According to the invention the optical components have been refined according to a general principle which enables the use of efficient elliptical reflectors without a reduction in quality for both purposes. Each colour is controlled by relatively moveable filters having a comblike structure in which the design of the individual teeth compensates for the interaction of the many variables. The intensity is controlled by mechanical dimmers which are designed according to the same principles. This construction will also improve the quality of condenser type projection systems.