G - Physics – 03 – B
Patent
G - Physics
03
B
G03B 21/132 (2006.01) G02B 26/02 (2006.01) G02B 27/00 (2006.01) G02B 27/02 (2006.01) G02F 1/13 (2006.01) G03B 21/00 (2006.01) G03B 21/12 (2006.01) G03B 21/14 (2006.01) G03B 21/30 (2006.01)
Patent
CA 2344679
A projector includes a housing having a single light projection source. A first condenser projects a first light beam from the light source, through an LCD image display screen mounted in the housing, and to a projection surface. A second condenser projects a second beam of light from the light source, to an overhead projector mounted on the housing, and to the projection surface. A beam blocking device is connected to the housing for movement into a position for selectively blocking the second beam of light.
Cette invention concerne un projecteur possédant un boîtier qui comprend une source de projection lumineuse unique. Un premier concentrateur projette un premier faisceau lumineux depuis la source de lumière vers une surface de projection, ceci par l'intermédiaire d'un écran d'affichage d'images à cristaux liquides qui est monté dans le boîtier. Un second concentrateur projette un second faisceau lumineux depuis la source de lumière vers un rétroprojecteur monté sur le boîtier et vers la surface de projection. Un dispositif bloqueur de faisceau connecté au boîtier de manière à pouvoir passer en une position permettant de bloquer sélectivement le second faisceau lumineux.
Minnesota Mining And Manufacturing Company
Smart & Biggar
LandOfFree
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