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US 5,349,400 AGranted
Back-projection display system and method for making a back-projection mirror
AssigneeThomson-CSF
InventorsDaniel Kaplan, Jean-Claude Lehureau
Life of this patent
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Abstract
Back-projection display system including a screen which can be moved away from or, conversely, placed up against a support such as a wall, for example. A projector located at some distance away, on the ceiling for example, illuminates a back-projection mirror located at 45.degree. in relation to the illumination beam and in relation to the screen. The back-projection mirror itself is also articulated. In addition, the mirror may be made in the form of a holographic mirror.
Claims24
A back-projection display system, comprising:
- a display screen;
- a projector for displaying images on a rear face of said display screen, wherein said display screen is attached to a planar surface and includes means for folding said display screen against said planar surface and also for moving said display screen away from said planar surface so that a major surface of said display screen is maintained substantially parallel to said planar surface when said display screen is held against said planar surface and when said display screen is moved perpendicularly away from said planar surface;
- and
- a mirror for reflecting light from said projector onto said rear face of said display screen, including means for folding said mirror against said planar surface.
1 more element
Dependencies are inferred from the claim text.