Substrate-guided imaging lens
First Claim
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1. An optical system comprising:
- a first light-transmitting substrate having at least one major surface and edges;
a display light source;
a coupling optical element carried by said substrate, such that light waves from said display source are coupled by said coupling optical element into said substrate by total internal reflection;
at least one polarizing beam-splitter carried by said substrate, at least one reflecting optical element, and at least one retardation plate;
wherein said retardation plate is located between at least a portion of the major surface of the substrate and said reflecting optical element and wherein said polarizing beam-splitter reflects light waves which are coupled inside the substrate into said reflecting optical element;
a second light-transmitting substrate having at least two major surfaces parallel to each other and two edges;
a second optical element for coupling light into said substrate by internal reflection; and
at least one partially reflecting surface located in said substrate, which surface is non-parallel to the major surfaces of said second substrate, wherein said second substrate is positioned adjacent to said first substrate.
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Abstract
There is provided an optical system, including a substrate having a major surface and edges, an optical element for coupling light into the substrate by total internal reflection, a reflecting surface carried by the substrate, a retardation plate and a reflecting optical element. The retardation plate is located between a portion of the major surface of the substrate and the reflecting optical element.
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Citations
36 Claims
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1. An optical system comprising:
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a first light-transmitting substrate having at least one major surface and edges; a display light source; a coupling optical element carried by said substrate, such that light waves from said display source are coupled by said coupling optical element into said substrate by total internal reflection; at least one polarizing beam-splitter carried by said substrate, at least one reflecting optical element, and at least one retardation plate; wherein said retardation plate is located between at least a portion of the major surface of the substrate and said reflecting optical element and wherein said polarizing beam-splitter reflects light waves which are coupled inside the substrate into said reflecting optical element; a second light-transmitting substrate having at least two major surfaces parallel to each other and two edges; a second optical element for coupling light into said substrate by internal reflection; and at least one partially reflecting surface located in said substrate, which surface is non-parallel to the major surfaces of said second substrate, wherein said second substrate is positioned adjacent to said first substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An optical system, comprising:
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a first light-transmitting substrate having at least one major surface and edges; a display light source; at least one polarizing beam-splitter carried by said substrate, at least one reflecting optical element, and at least one retardation plate, wherein said retardation plate is located between at least a portion of the major surface of the substrate and said reflecting optical element and wherein said polarizing beam-splitter reflects light waves which are coupled inside the substrate into said reflecting optical element; a second light-transmitting substrate having at least two major surfaces parallel to each other and two edges; and at least one partially reflecting surface located in said substrate, which surface is non-parallel to the major surfaces of said second substrate, wherein said second substrate is positioned adjacent to said first substrate, wherein said first and second light-transmitting substrates are optically attached; characterized by at least one coupling optical element carried by said substrates, such that light waves from said display source are coupled by said coupling optical element into said substrates by total internal reflection. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification