Slide-screen for back projection
OwnerHorst Stiefinventor
Life of this patent
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Abstract
A slide-screen for back projection has a standing and/or suspended frame (1) and a projection surface arranged within it. The projection surface is made double-skinned and consists of a plastics or similar translucent partition (3), which allows through light rays (5) coming from a reflector (4), and a natural or synthetic glass viewing screeen (2) which reflects the impinging light rays (5) in the direction of the translucent partition (3) preventing dissipation of the light.
Claims16
In a slide-screen for back projection, having a frame and a projection surface arranged within said frame, the improvement which comprises that the projection surface is double-skinned and consists of:
- (i) a curved translucent partition which lets through light rays coming from a reflector, and
- (ii) a natural or synthetic glass viewing screen which reflects the impinging light rays in the direction of the translucent partition while preventing the dissipation of light.
Dependencies are inferred from the claim text.