Projector device with linear reflector

F - Mech Eng,Light,Heat,Weapons – 21 – V

Patent

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Details

F21V 9/10 (2006.01) F21S 10/02 (2006.01) F21V 7/00 (2006.01) F21V 13/08 (2006.01) F21V 13/12 (2006.01) F21V 23/04 (2006.01)

Patent

CA 2320478

In the projector device (50) the projector (10) comprises a light source (14) and a reflector (12). This latter (12) has a surface obtained by causing a suitable plane line to translate such that the surface thus obtained is able to generate a light beam having a substantially rectangular cross section, a dimension of which decreases in receding from the reflector (12) until it becomes reduced to a strip (16), this dimension then increasing on continuing to recede from the reflector (12). Optical devices such as colour filters, colour changer means (20A, 20B, 22A, 22B, 24A, 24B), filters for converting the colour temperature, mechanical dimmers (18) and obscurers can be located at or in the vicinity of that position (16) in which the cross section of the light beam has minimum width. Optical prisms, lenses and diffusers can also be provided. A control unit (52) can also be provided, possibly comprising electronic dimmers, and actuator means (60) for executing the functions of the projector (10) and for moving it.

L'invention porte sur dispositif de projection (50) comportant un projecteur (10) comprenant une source lumineuse (14) et un réflecteur (12) dont la surface, obtenue par translation d'une ligne de plans appropriée produit un faisceau lumineux de section transversale sensiblement rectangulaire dont l'une des dimensions s'amenuise alors qu'on s'éloigne du réflecteur (12) jusqu'à ne former qu'une raie (16), puis croit à nouveau lorsqu'on s'en (12) éloigne plus. On peut placer au voisinage de la raie (16), là où la largeur du faisceau est minimale différents dispositifs optiques tels que des filtres de couleurs, des modificateurs de couleurs (20A, 20B, 22A, 22B, 24A, 24B), des filtres modifiant la température des couleurs, des gradateurs mécaniques ou des caches, ainsi que des prismes, des lentilles et des diffuseurs. On peut également prévoir une unité (52) agissant par exemple sur des gradateurs électroniques ou un actionneur (60) commandant les fonctions et les déplacements du projecteur (10).

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