Holographic Substrate-Guided Wave-Based See-Through Display
First Claim
1. A display apparatus comprising:
- a microdisplay, capable of emitting light in the form of an image;
a holographic lens, capable of accepting the light in the form of an image from the microdisplay, and capable of transmitting the accepted light in the form of an image;
an elongate transparent substrate, capable of accepting the light in the form of an image from the holographic lens at a first location, and transmitting the light in the form of an image along a length of the substrate by total internal reflection to a second location spaced from the first location, the elongate substrate being capable of transmitting the accepted light in the form of an image at the second location; and
a transparent holographic grating, capable of accepting the light transmitted from the elongate substrate and transmitting it to a location outside of the holographic grating as a viewable image.
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Accused Products
Abstract
A holographic substrate-guided wave-based see-through display can has a microdisplay, capable of emitting light in the form of an image. The microdisplay directs its output to a holographic lens, capable of accepting the light in the form of an image from the microdisplay, and capable of transmitting the accepted light in the form of an image. The holographic lens couples its output to an elongate transparent substrate, capable of accepting the light in the form of an image from the holographic lens at a first location, and transmitting the light in the form of an image along a length of the substrate by total internal reflection to a second location spaced from the first location, the elongate substrate being capable of transmitting the accepted light in the form of an image at the second location. The substrate couples out what it receives to a transparent holographic grating, capable of accepting the light transmitted from the elongate substrate and transmitting it to a location outside of the holographic grating as a viewable image.
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Citations
5 Claims
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1. A display apparatus comprising:
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a microdisplay, capable of emitting light in the form of an image; a holographic lens, capable of accepting the light in the form of an image from the microdisplay, and capable of transmitting the accepted light in the form of an image; an elongate transparent substrate, capable of accepting the light in the form of an image from the holographic lens at a first location, and transmitting the light in the form of an image along a length of the substrate by total internal reflection to a second location spaced from the first location, the elongate substrate being capable of transmitting the accepted light in the form of an image at the second location; and a transparent holographic grating, capable of accepting the light transmitted from the elongate substrate and transmitting it to a location outside of the holographic grating as a viewable image. - View Dependent Claims (2)
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3. A display apparatus comprising:
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a microdisplay, capable of emitting highly collimated light in the form of a second image; a first holographic lens, capable of accepting the light in the form of an image from the microdisplay, and capable of transmitting the accepted light in the form of an image with light beams that diverge; an elongate transparent substrate, capable of accepting the light in the form of the second image from the first holographic lens at a first location, and transmitting the light in the form of the second image along a length of the substrate by total internal reflection to a second location spaced from the first location, the elongate substrate being capable of transmitting the accepted light in the form of the second image at the second location; and a second holographic lens, capable of accepting the second image transmitted from the elongate substrate and transmitting it to a location outside of the holographic grating as a viewable image.
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4. An apparatus for monitoring a reflective area comprising:
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a light source positioned to illuminate the reflective area; a holographic lens, capable of accepting light reflected by the area in the form of an image from the area, and capable of transmitting the accepted light in the form of an image of the illuminated reflective area; an elongate transparent substrate, capable of accepting the light in the form of an image from the holographic lens at a first location, and transmitting the light in the form of an image along a length of the substrate by internal reflection to a second location spaced from the first location, the elongate substrate being capable of transmitting the accepted light in the form of an image at the second location; a transparent holographic grating, capable of accepting the light transmitted from the elongate substrate and transmitting it to a location outside of the holographic grating as a viewable image a camera, capable of accepting light bearing an image from the holographic grating, the camera being capable of continuously or intermittently recording the transmitted image of the reflective area. - View Dependent Claims (5)
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Specification