Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
106 words
A liquid crystal display system comprising a reflective liquid crystal device having a liquid crystal display surface and operating in the dynamic scattering mode, and a fiber optic faceplate adjacent said liquid crystal display surface and having a multitude of optical fibers whose longitudinal axes are parallel to each other and are substantially perpendicular to the faces of said faceplate and to the liquid crystal display surface, each of said fibers having an acceptance cone which defines exclusively the angle of incident light transmitted by said fibers, said acceptance cone being substantially smaller than the activated or "on-state" scattering cone of said liquid crystal display surface.
Claim 2
Dependent Claim
106 words
A liquid crystal display system comprising a reflective liquid crystal device having a liquid crystal display surface and operating in the dynamic scattering mode, and a fiber optic faceplate adjacent said liquid crystal display surface and having a multitude of optical fibers whose longitudinal axes are parallel to each other and are substantially perpendicular to the faces of said faceplate and to the liquid crystal display surface, each of said fibers having an acceptance cone which defines exclusively the angle of incident light transmitted by said fibers, said acceptance cone being substantially smaller than the activated or "on-state" scattering cone of said liquid crystal display surface.
Claim 3
Dependent Claim
98 words
A system as claimed in claim 1, constituting an image projection arrangement wherein a light source illuminates the liquid crystal display surface of a reflective liquid crystal light valve device, and a projection lens images said display surface onto a projection screen, means being provided for directing light from said light source onto said faceplate within said acceptance cone, whereby light is transmitted through said faceplate to said liquid crystal display surface where at least a portion of said light is directed back through said faceplate so as to be imaged by said lens onto said projection screen.
Claim 4
Dependent Claim
79 words
A system as claimed in claim 1, constituting a direct image display arrangement whereby stray light from unwanted light sources impinging on said faceplate outside of said acceptance cone is absorbed by said faceplate, and light for illuminating said liquid crystal display surface impinging on said faceplate within said acceptance cone is transmitted to said display surface where at least a portion of said light is directed back through said faceplate to a viewer located within said acceptance cone.
Claim 5
Dependent Claim
29 words
4 . A system as claimed in claim 1, 2 or 3, wherein light incident upon said faceplate outside of said acceptance cone is absorbed by said optical fibers.
Claim 6
Independent Claim
45 words
A system as claimed in any preceding claim, wherein each of said fibers comprises a transparent core covered with a transparent sheath having an index of refraction less than the index of refraction of said core, said sheath being covered with an optically absorbing material.
Claim 7
Independent Claim
28 words
A system as claimed in any preceding claim, wherein said liquid crystal display surface is electronically activated by an array of individually addressable electrodes formed within said device.
Claim 8
Independent Claim
25 words
A system as claimed in any of the claims 1-5, wherein said liquid crystal surface is photoactivated by a photoconductor member formed within said device.
Claim 9
Dependent Claim
23 words
A system as claimed in claim 2, wherein the light from said light source impinges upon said faceplate substantially at a right angle.