Projector attachment for ellipsoidal lamp
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United States of America Patent
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-
Aug 9, 2005
Grant Date -
Mar 4, 2004
app pub date -
Aug 28, 2003
filing date -
Aug 29, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A process and apparatus reversibly converts an ellipsoidal stage lamp into a projector for projecting light with special effects onto a stage. The apparatus includes a replacement for the shutter section, which is a cabinet for disposition within the ellipsoidal stage lamp to replace the shutter section. The cabinet defines a first opening disposed along and around the optical axis of the ellipsoidal stage lamp and which is open to the base and lamp having a filament. The cabinet has one open side for permitting the sliding insertion of a drawer. The drawer, which is mountable to the cabinet, has a second opening disposed along and around the optical axis of the ellipsoidal stage lamp and open to the base and lamp when the drawer is inserted to the cabinet. A movable projector plane is mounted to the drawer across the second opening for insertion to the cabinet at the open side.
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