Optical device for light coupling
First Claim
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1. An imaging optical device, comprising:
- a light source;
a light-transmitting substrate having at least two major surfaces parallel to each other and two edges;
an optical element having at least a first, a second, and a third surface for coupling light waves from said light source into said substrate by total internal reflection,wherein at least one of said edges is slanted with respect to said major surfaces, wherein at least a portion of said first surface for coupling light into the substrate is in contact with, or located adjacent to, said slanted edge, and wherein said coupled light waves enter the substrate through said slanted edge,characterized in that said light source emits light waves located in a given field of view, said light waves are collimated to form plane waves, and that the trapped rays from any of said light plane waves are coupled inside the substrate at the same direction.
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Abstract
There is provided an optical device, including a light-transmitting substrate having two major surfaces parallel to each other and two edges, optics for coupling light into the substrate by internal reflection. One of the edges is slanted with respect to the major surfaces and a portion of the optics for coupling light into the substrate is in contact with, or located adjacent to, the slanted edge.
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Citations
39 Claims
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1. An imaging optical device, comprising:
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a light source; a light-transmitting substrate having at least two major surfaces parallel to each other and two edges; an optical element having at least a first, a second, and a third surface for coupling light waves from said light source into said substrate by total internal reflection, wherein at least one of said edges is slanted with respect to said major surfaces, wherein at least a portion of said first surface for coupling light into the substrate is in contact with, or located adjacent to, said slanted edge, and wherein said coupled light waves enter the substrate through said slanted edge, characterized in that said light source emits light waves located in a given field of view, said light waves are collimated to form plane waves, and that the trapped rays from any of said light plane waves are coupled inside the substrate at the same direction. - 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