Substrate guided relay with polarization rotating apparatus
First Claim
1. An optical substrate guided relay, comprising:
- an input coupler configured to receive light from a source;
an optical substrate coupled to the input coupler and configured to receive the light from the input coupler and transmit the light across the optical substrate; and
an output coupler coupled to the optical substrate, configured to receive the light from the optical substrate and deliver the light away from the optical substrate guided relay with one or more partially reflective layers;
a light homogenizing layer coupled to the input coupler in an offset configuration, wherein the light homogenizing layer is configured to make at least one copy of the light and to deliver the light and the at least one copy of the light to the optical substrate; and
a light polarization alteration device, integral with the optical substrate guided relay, configured to convert a first polarization light to a second polarization light, wherein the light polarization alteration device is disposed between the light homogenizing layer and the input coupler.
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Accused Products
Abstract
A substrate guided relay (600) includes an input coupler (601), an output coupler (603), and an optical substrate (602). Light is delivered from the input coupler (601) to the optical substrate (602), and then to the output coupler (603). Partially reflective coatings can be used at interfaces (606,607) between components. Partially reflective coatings or other devices (501) can be also used to create one or more copies of light. Light polarization alteration devices (661,662,663,664,665) can be used within the substrate guided relay (600), alone or in combination, to tailor the polarization of light to the designer'"'"'s needs. Such devices, such as half-wave plates, provide the designer with increased flexibility regarding the design and manufacture of the substrate guided relay (600).
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Citations
17 Claims
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1. An optical substrate guided relay, comprising:
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an input coupler configured to receive light from a source; an optical substrate coupled to the input coupler and configured to receive the light from the input coupler and transmit the light across the optical substrate; and an output coupler coupled to the optical substrate, configured to receive the light from the optical substrate and deliver the light away from the optical substrate guided relay with one or more partially reflective layers; a light homogenizing layer coupled to the input coupler in an offset configuration, wherein the light homogenizing layer is configured to make at least one copy of the light and to deliver the light and the at least one copy of the light to the optical substrate; and a light polarization alteration device, integral with the optical substrate guided relay, configured to convert a first polarization light to a second polarization light, wherein the light polarization alteration device is disposed between the light homogenizing layer and the input coupler. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An optical substrate guided relay system, comprising:
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a scanned light source; an input coupler configured to receive light from the scanned light source; an optical substrate coupled to the input coupler and configured to receive the light from the input coupler and transmit the light across the optical substrate; and an output coupler coupled to the optical substrate, configured to receive the light from the optical substrate and deliver the light away from the optical substrate guided relay system; a light homogenizing layer coupled to the input coupler in an offset configuration, wherein the light homogenizing layer is configured to make at least one copy of the light and to deliver the light and the at least one copy of the light to the optical substrate; and a light polarization alteration device, integral with the optical substrate guided relay system, configured to convert a first polarization light to a second polarization light, wherein the light polarization alteration device is disposed between the light homogenizing layer and the input coupler.
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17. An eyewear device having lens assemblies coupled to a frame and being capable of presenting visible images to a wearer, the eyewear device comprising:
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an image-producing source integrated with the frame; and a substrate guided relay integrated with at least one of the lens assemblies; wherein the substrate guided relay comprises; an input coupler configured to receive light from the image-producing source; an optical substrate coupled to the input coupler and configured to receive the light from the input coupler and transmit the light across the optical substrate; an output coupler coupled to the optical substrate, configured to receive the light from the optical substrate and deliver the light away from the substrate guided relay; a light homogenizing layer coupled to the input coupler in an offset configuration, wherein the light homogenizing layer is configured to make at least one copy of the light and to deliver the light and the at least one copy of the light to the optical substrate; and a light polarization alteration device, integral with the optical substrate guided relay, configured to convert a first polarization light to a second polarization light, wherein the light polarization alteration device is disposed between the light homogenizing layer and the input coupler.
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Specification