F - Mech Eng,Light,Heat,Weapons – 21 – V
Patent
F - Mech Eng,Light,Heat,Weapons
21
V
240/147
F21V 7/00 (2006.01) F21V 5/02 (2006.01)
Patent
CA 2001111
An indirect lighting system having a generally visible light transmissive element, such as a prismatic lens element (31, 33) or a diffuser strip, which modifies the direction of the light incident thereon from a secondary light source, The lighting system has a primary light source (13, 14) and structural means as in a housing (21) for positioning the primary light source proximate a reflective surface (12) which reflects light back toward the light transmissive element and which thereby acts as a secondary source of light for illuminating this element. A light foil means such as vertical side reflector walls (45, 47) are disposed between the primary light source and light transmissive element for substantially blocking direct transmission of light to the latter from the former. The light foil means, by keeping primary source light from directly striking the light transmissive element, forces the observable brightness in this element to be induced substantially entirely by the reflected light from the secondary source.
Système d'éclairage indirect ayant un élément de transmission de la lumière visible, comme un élément de filtre à facettes (31, 33) ou une bande de diffusion, qui modifie la direction de la lumière incidente depuis une source d'éclairage secondaire. Le système d'éclairage comprend une source primaire de lumière (13, 14) et un dispositif structurel comme un boîtier (21) afin de placer la source primaire de lumière à proximité d'une surface réfléchissante (12) qui réfléchit la lumière vers l'élément de transmission de la lumière et qui, par conséquent, agit comme une source secondaire de lumière pour éclairer cet élément. Des dispositifs en matériau mince, comme des parois réfléchissantes latérales verticales (45, 47), sont placés entre la source primaire de lumière et l'élément de transmission de façon à essentiellement bloquer la transmission directe de la lumière à l'élément de transmission depuis la source primaire. Le matériau mince, en empêchant la lumière de la source primaire de frapper directement l'élément de transmission, force la luminosité visible de cet élément à être induite essentiellement entièrement par la lumière réfléchie de la source secondaire.
Herst Douglas J.
Ngai Peter Y. Y.
Macrae & Co.
Peerless Lighting Corporation
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