Optical displays
First Claim
1. An apparatus for providing an optical display, comprising:
- an optical substrate for propagating light received from a light source;
a first set of one or more switchable diffractive elements in the substrate; and
a second set of one or more switchable diffractive elements in the substrate, each diffractive element in the second set corresponding to a diffractive element in the first set, each of the diffractive elements in the first and second sets configured to switch between on and off states, one of the states for diffracting light and the other state for allowing light to pass through, each of the first set of diffractive elements configured to diffract the light at an angle for propagation in the substrate, and each of the second set of diffractive elements configured to diffract the light for display.
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Accused Products
Abstract
An apparatus for providing an optical display includes an optical substrate for propagating light received from a light source, a first set of one or more switchable diffractive elements in the substrate, and a second set of one or more switchable diffractive elements in the substrate. Each diffractive element in the second set corresponds to a diffractive element in the first set. Each of the diffractive elements in the first and second sets is configured to switch between on and off states. One of the states is for diffracting light and the other state for allowing light to pass through. Each of the first set of diffractive elements is configured to diffract the light at an angle for propagation in the substrate. Each of the second set of diffractive elements is configured to diffract the light for display.
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Citations
19 Claims
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1. An apparatus for providing an optical display, comprising:
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an optical substrate for propagating light received from a light source; a first set of one or more switchable diffractive elements in the substrate; and a second set of one or more switchable diffractive elements in the substrate, each diffractive element in the second set corresponding to a diffractive element in the first set, each of the diffractive elements in the first and second sets configured to switch between on and off states, one of the states for diffracting light and the other state for allowing light to pass through, each of the first set of diffractive elements configured to diffract the light at an angle for propagation in the substrate, and each of the second set of diffractive elements configured to diffract the light for display. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An apparatus for providing an optical display, comprising:
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a substrate for propagating light received from a light source; a first set of one or more switchable Bragg gratings or holographic polymer dispersed liquid crystal devices in the substrate; and a second set of one or more switchable Bragg gratings or holographic polymer dispersed liquid crystal devices in the substrate, each Bragg grating or liquid crystal device in the second set corresponding to a Bragg grating or liquid crystal device in the first set, each of the Bragg gratings or liquid crystal devices in the first and second sets configured to switch between on and off states, one of the states for diffracting light and the other state for allowing light to pass through, each of the first set of Bragg gratings or liquid crystal devices configured to diffract the light at an angle for propagation in the substrate, and each of the second set of Bragg gratings or liquid crystal devices configured to diffract the light for display. - View Dependent Claims (19)
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Specification