EMBEDDED RELAY LENS FOR HEAD-UP DISPLAYS OR THE LIKE
First Claim
Patent Images
1. An optical relay, comprising:
- a lens having an at least partially reflective coating and having a first index of refraction, the lens comprising a Fresnel lens, a diffractive lens, a holographic lens, or combinations thereof, wherein the at least partially reflective coating is a neutral density filter;
a filler medium having a second index of refraction and being disposed adjacent to the lens, wherein at least one of the lens or the filler medium, or combinations thereof, is at least partially transparent;
a polarizing beam splitter disposed between the integrated photonics module and the optical relay; and
a retarder or a beam splitter, or combinations thereof, disposed proximate to the lens.
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Accused Products
Abstract
Briefly, in accordance with one or more embodiments, an optical relay comprises a partially-reflective-coated Fresnel lens or similar low-profile lens such as a diffractive lens or a holographic lens having a first index of refraction and a filler medium having a second index of refraction and being disposed adjacent to the Fresnel lens. The optical relay enables the optical power of the Fresnel or similar low-profile lens embedded within the two layers to influence a beam that is reflected from the optical relay while allowing transmitted light to experience little or no influence from the embedded lens.
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Citations
20 Claims
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1. An optical relay, comprising:
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a lens having an at least partially reflective coating and having a first index of refraction, the lens comprising a Fresnel lens, a diffractive lens, a holographic lens, or combinations thereof, wherein the at least partially reflective coating is a neutral density filter; a filler medium having a second index of refraction and being disposed adjacent to the lens, wherein at least one of the lens or the filler medium, or combinations thereof, is at least partially transparent; a polarizing beam splitter disposed between the integrated photonics module and the optical relay; and a retarder or a beam splitter, or combinations thereof, disposed proximate to the lens. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A head-up display system for a vehicle, comprising:
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a projector to display a projected image; and an optical relay onto which the image is projected from a first side of the optical relay to allow a viewer to view the projected image through the optical relay wherein the virtual projected image is displayed on another side of the optical relay; wherein the optical relay comprises; a lens having an partially-reflective coating and a first index of refraction, wherein the lens comprises a Fresnel lens, a diffractive lens, or a holographic lens, or combinations thereof, wherein the partially reflective coating is a neutral density filter; a filler medium having a second index of refraction and being disposed adjacent to the lens, wherein at least one of the lens or the filler medium, or combinations thereof, is at least partially transparent; a polarizing beam splitter disposed between the integrated photonics module and the optical relay; and a retarder or a beam splitter, or combinations thereof, disposed proximate to the lens. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A near-to-eye display system, comprising:
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a projector module capable of emitting a projected image; and an optical relay onto which the scanned beam is projected from a first side of the optical relay to allow a viewer to view the projected image through the optical relay wherein the projected image is displayed on another side of the optical relay; wherein the optical relay comprises; a lens having an least partially reflective coating and a first index of refraction, the lens comprising a Fresnel lens, a diffractive lens, or a holographic lens, or combinations thereof, wherein the at least partially reflective coating is a neutral density filter; a filler medium having a second index of refraction and being disposed adjacent to the lens, wherein at least one of the lens or the filler medium, or combinations thereof, is at least partially transparent; a polarizing beam splitter disposed between the integrated photonics module and the optical relay; and a retarder or a beam splitter, or combinations thereof, disposed proximate to the lens. - View Dependent Claims (18, 19)
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20-25. -25. (canceled)
Specification