Substrate-guided optical device with wide aperture
First Claim
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1. An optical device, comprising:
- a light-transmitting substrate having at least two major surfaces parallel to each other and edges;
optical means for coupling light into said substrate, andat least one selectively reflecting surface located in said substrate which is non-parallel to said major surfaces of the substrate and wherein said optical means for coupling light into said substrate is a partially reflecting surface, wherein part of the light coupled into the substrate passes through the partially reflecting surface out of said substrate and part of said light is reflected into the substrate by one of the major surfaces and further reflected at least once by total internal reflection and coupled out of the substrate by the selectively reflecting surface after reflection off at least one of the major surfaces of the substrate.
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Abstract
There is provided an optical device, having a light transmitting substrate (20) including at least two major surfaces parallel to each other and edges; optical means (16) for coupling light into the substrate by internal reflection and at least one reflecting, surface (22) located in the substrate which is non-parallel to the major surfaces of the substrate (20) characterized in that the optical means (16) for coupling light into the substrate is a partially reflecting surface, wherein part of the light coupled into the substrate (20) passes through the partially reflecting surface (16) out of the substrate and part of the light is reflected into the substrate (20).
226 Citations
39 Claims
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1. An optical device, comprising:
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a light-transmitting substrate having at least two major surfaces parallel to each other and edges; optical means for coupling light into said substrate, and at least one selectively reflecting surface located in said substrate which is non-parallel to said major surfaces of the substrate and wherein said optical means for coupling light into said substrate is a partially reflecting surface, wherein part of the light coupled into the substrate passes through the partially reflecting surface out of said substrate and part of said light is reflected into the substrate by one of the major surfaces and further reflected at least once by total internal reflection and coupled out of the substrate by the selectively reflecting surface after reflection off at least one of the major surfaces of the substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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Specification