Projection device for projecting an image onto a projection surface, and a projection unit for coupling to a projector
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United States of America Patent
Stats
-
May 6, 2003
Grant Date -
Dec 5, 2002
app pub date -
Jun 17, 2002
filing date -
Aug 25, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A projection arrangement for projecting an image onto a projection surface, said arrangement comprising a light source (26), a film stage (2), arranged following said light source, for holding a positive image recorded on a carrier medium, and projection optics (3) for projecting a illuminated positive image, is provided with a control unit (25), a light modulator (10) controllable by said control unit in order to generate an additional image on the basis of predetermined image data, said light modulator being followed by an optical device (11) for projecting the additional image onto the projection surface (34), and with a beam splitter (6) arranged between the light source (26) and the film stage (2) so as to split the light from the light source (26) into a first partial beam directed to the film stage (2) in order to illuminate the positive image and into a second partial beam which may be directed to the light modulator (10). Thus, a projection arrangement is provided which allows to project additional images, such as subtitles, in addition to the illuminated positive image.
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Cited Art Landscape
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