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US 5,706,062 AGranted
Projector system including keystone correction
AssigneeUnic View Ltd.
InventorAdi Stolov
Life of this patent
Estimating the term…
Abstract
A projector for use with a light source and including a shutter assembly having a multiplicity of pixel light valves and a color separator disposed intermediate the light source and the shutter assembly and spaced therefrom and providing a plurality of spatially separated differently colored light beams, wherein the plurality of spatially separated differently colored light beams are in predetermined registration with the multiplicity of pixel light valves.
Claims60
A projector for use with a light source and comprising:
- a shutter assembly having a multiplicity of pixel light valves;
- a color separator disposed intermediate the light source and the shutter assembly and spaced therefrom and providing a plurality of spatially separated differently colored light beams;
- and
- a focusing lens assembly including a Fresnel lens and a compound lens which are tilted towards each other;
- wherein the plurality of spatially separated differently colored light beams are in predetermined registration with the multiplicity of pixel light valves,
- and wherein said focusing lens assembly and said shutter assembly are each independently tiltably mounted.
3 more elements
A projection system comprising:
- projector for use with a light source and comprising:
- a shutter assembly having a multiplicity of pixel light valves;
- a color separator disposed intermediate the light source and the shutter assembly and providing a plurality of spatially separated differently colored light beams;
- and
- a focusing lens assembly including a Fresnel lens and a compound lens which are tilted towards each other;
- and
- a screen arranged in light receiving relationship with the projector and including a plurality of light impingement regions having different color characteristics, and wherein
- the plurality of spatially separated differently colored light beams are in predetermined registration with the multiplicity of pixel light valves, and
- the plurality of spatially separated differently colored light beams are arranged in predetermined registration with said plurality of light impingement regions having different color characteristics, and
- said focusing lens assembly and said shutter assembly are each independently tiltably mounted.
7 more elements
A projector for use with a light source and comprising:
- a shutter assembly having a multiplicity of pixel light valves;
- color separator comprising an array of prism/lens combinations disposed intermediate the light source and the shutter assembly and providing a plurality of spatially separated differently colored light beams;
- and
- a focusing lens assembly including a Fresnel lens and a compound lens which are tilted towards each other;
- wherein the plurality of spatially separated differently colored light beams are in predetermined registration with the multiplicity of pixel light valves, and wherein said focusing lens assembly and said shutter assembly are each independently tiltably mounted.
2 more elements
A projector for use with a light source and comprising:
- a shutter assembly having a multiplicity of pixel light valves;
- an upstream selective light absorber disposed intermediate the light source and the shutter assembly and spaced therefrom;
- and
- a focusing lens assembly including a Fresnel lens and a compound lens which are tilted towards each other;
- wherein said focusing lens assembly and said shutter assembly are each independently tiltably mounted.
2 more elements
A projector for use with a light source and comprising:
- a shutter assembly having a multiplicity of pixel light valves;
- a color separator disposed intermediate the light source and the shutter assembly and spaced therefrom and providing a plurality of spatially separated differently colored light beams;
- and
- a focusing lens assembly including a Fresnel lens and a compound lens which are tilted towards each other;
- wherein the plurality of spatially separated differently colored light beams are in predetermined registration with the multiplicity of pixel light valves,
- and wherein said focusing lens assembly and said shutter assembly are mounted in different planes at a tilt relative to each other.
3 more elements
A projection system comprising:
- a projector for use with a light source and comprising:
- a shutter assembly having a multiplicity of pixel light valves;
- a color separator disposed intermediate the light source and the shutter assembly and providing a plurality of spatially separated differently colored light beams;
- and
- a focusing lens assembly including a Fresnel lens and a compound lens which are tilted towards each other;
- and
- a screen arranged in light receiving relationship with the projector and including a plurality of light impingement regions having different color characteristics, and wherein
- the plurality of spatially separated differently colored light beams are in predetermined registration with the multiplicity of pixel light valves, and
- the plurality of spatially separated differently colored light beams are arranged in predetermined registration with said plurality of light impingement regions having different color characteristics, and
- said focusing lens assembly and said shutter assembly are mounted in different planes at a tilt relative to each other.
7 more elements
A projector for use with a light source and comprising:
- a shutter assembly having a multiplicity of pixel light valves;
- a color separator comprising an array of prism/lens combinations disposed intermediate the light source and the shutter assembly and providing a plurality of spatially separated differently colored light beams;
- and
- a focusing lens assembly including a Fresnel lens and a compound lens which are tilted towards each other;
- wherein the plurality of spatially separated differently colored light beams are in predetermined registration with the multiplicity of pixel light valves, and wherein said focusing lens assembly and said shutter assembly are mounted in different planes at a tilt relative to each other.
2 more elements
A projector for use with a light source and comprising:
- a shutter assembly having a multiplicity of pixel light valves;
- an upstream selective light absorber disposed intermediate the light source and the shutter assembly and spaced therefrom;
- and
- a focusing lens assembly including a Fresnel lens and a compound lens which are tilted towards each other;
- wherein said focusing lens assembly and said shutter assembly are mounted in different planes at a tilt relative to each other.
2 more elements
Dependencies are inferred from the claim text.