PROJECTOR
First Claim
1. A projector comprising:
- a solid-state light source that emits linearly polarized light;
a birefringence element that converts the linearly polarized light emitted from the solid-state light source into circularly or elliptically polarized light;
a diffusion element that diffuses the light having exited from the birefringence element; and
a polarization conversion element that separates the diffused light having exited from the diffusion element into first polarized light polarized in a first polarization direction and second polarized light polarized in a second polarization direction, converts the polarization direction of the first polarized light into the second polarization direction, and outputs the resultant second polarized light.
1 Assignment
0 Petitions
Accused Products
Abstract
A projector includes a solid-state light source that emits linearly polarized light, a birefringence element that converts the linearly polarized light emitted from the solid-state light source into circularly or elliptically polarized light, a diffusion element that diffuses the light having exited from the birefringence element, and a polarization conversion element that separates the diffused light having exited from the diffusion element into first polarized light polarized in a first polarization direction and second polarized light polarized in a second polarization direction, converts the polarization direction of the first polarized light into the second polarization direction, and outputs the resultant first and second polarized light.
24 Citations
11 Claims
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1. A projector comprising:
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a solid-state light source that emits linearly polarized light; a birefringence element that converts the linearly polarized light emitted from the solid-state light source into circularly or elliptically polarized light; a diffusion element that diffuses the light having exited from the birefringence element; and a polarization conversion element that separates the diffused light having exited from the diffusion element into first polarized light polarized in a first polarization direction and second polarized light polarized in a second polarization direction, converts the polarization direction of the first polarized light into the second polarization direction, and outputs the resultant second polarized light. - View Dependent Claims (2, 5, 6, 7)
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3. A projector comprising:
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a solid-state light source that emits linearly polarized light; a diffusion element that diffuses the linearly polarized light emitted from the solid-state light source; a birefringence element that converts the diffused light having exited from the diffusion element into circularly or elliptically polarized light; and a polarization conversion element that separates the light having exited from the birefringence element into first polarized light polarized in a first polarization direction and second polarized light polarized in a second polarization direction, converts the polarization direction of the first polarized light into the second polarization direction, and outputs the resultant second polarized light. - View Dependent Claims (4)
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8. A projector comprising:
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a first solid-state light source that emits first linearly polarized light; a second solid-state light source that emits second linearly polarized light; a diffusion element that diffuses the first linearly polarized light emitted from the first solid-state light source and the second linearly polarized light emitted from the second solid-state light source; and a polarization conversion element that separates the diffused light having exited from the diffusion element into first polarized light polarized in a first polarization direction and second polarized light polarized in a second polarization direction, converts the polarization direction of the first polarized light into the second polarization direction, and outputs the resultant second polarized light. - View Dependent Claims (9, 10, 11)
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Specification