OPTICAL BEAM TILT FOR OFFSET HEAD MOUNTED DISPLAY
First Claim
1. An eyepiece for a head mounted display, the eyepiece comprising:
- a display module for providing display light along a forward propagation path within the eyepiece;
an end reflector disposed at an opposite end of the eyepiece from the display module to reflect the display light back along a reverse propagation path within the eyepiece; and
a viewing region to be aligned with an eye of a user, the viewing region disposed between the display module and the end reflector and including a partially reflective surface, the partially reflective surface to pass the display light traveling along the forward propagation path and to redirect the display light traveling along the reverse propagation path out of an eye-ward side of the eyepiece along an emission path,wherein the partially reflective surface has a compound folding angle such that the emission path of the display light emitted from the eyepiece is folded along two axes relative to the reverse propagation path between the concave end reflector and the partially reflective surface.
2 Assignments
0 Petitions
Accused Products
Abstract
An eyepiece for a head mounted display includes a display module, end reflector, and viewing region. The end reflector is disposed at an opposite end of the eyepiece from the display module to reflect the display light back from a forward propagation path to a reverse propagation path. The viewing region is disposed between the display module and the end reflector and includes a partially reflective surface, that passes the display light traveling along the forward propagation path and redirects the display light traveling along the reverse propagation path out of an eye-ward side of the eyepiece along an emission path. The partially reflective surface has a compound folding angle such that the emission path of the display light emitted from the eyepiece is folded along two axes relative to the reverse propagation path between the concave end reflector and the partially reflective surface.
176 Citations
21 Claims
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1. An eyepiece for a head mounted display, the eyepiece comprising:
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a display module for providing display light along a forward propagation path within the eyepiece; an end reflector disposed at an opposite end of the eyepiece from the display module to reflect the display light back along a reverse propagation path within the eyepiece; and a viewing region to be aligned with an eye of a user, the viewing region disposed between the display module and the end reflector and including a partially reflective surface, the partially reflective surface to pass the display light traveling along the forward propagation path and to redirect the display light traveling along the reverse propagation path out of an eye-ward side of the eyepiece along an emission path, wherein the partially reflective surface has a compound folding angle such that the emission path of the display light emitted from the eyepiece is folded along two axes relative to the reverse propagation path between the concave end reflector and the partially reflective surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of operation of a head mounted display (“
- HMD”
), the method comprising;passing display light traveling along a forward propagating path within an eyepiece of the HMD through a partially reflective surface; reflecting, with an end reflector, the display light from the forward propagating path to a reverse propagating path extending within the eyepiece; and reflecting, with the partially reflective surface, the display light travelling along the reverse propagating out of the eyepiece along an emission path into an eye of a user wearing the HMD, wherein the emission path exits the eyepiece through an eye-ward surface of the eyepiece, wherein the eyepiece is positioned above the eye with the eye-ward side of the eyepiece being substantially vertical, wherein the partially reflective surface has a compound folding angle such that the emission path of the display light emitted from the eyepiece is substantially perpendicular to the eye-ward surface along a first axis and tilted downward towards the eye along a second axis. - View Dependent Claims (12, 13, 14, 15)
- HMD”
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16. A head mounted display (“
- HMD”
) for providing display light to an eye of a user, the HMD comprising;an eyepiece including; an display module for providing the display light along a forward propagation path within the eyepiece; an end reflector disposed at an opposite end of the eyepiece from the display module to reflect the display light back along a reverse propagation path within the eyepiece; and a viewing region to be aligned with an eye of a user, the viewing region disposed between the display module and the end reflector and including a partially reflective surface, the partially reflective surface to pass the display light traveling along the forward propagation path and to redirect the display light traveling along the reverse propagation path out of an eye-ward side of the eyepiece along an emission path, wherein the partially reflective surface has a compound folding angle such that the emission path of the display light emitted from the eyepiece is folded along two axes relative to the reverse propagation path between the concave end reflector and the partially reflective surface, and a frame assembly to support the eyepiece for wearing on a head of the user with the viewing region positioned above the eye of the user. - View Dependent Claims (17, 18, 19, 20, 21)
- HMD”
Specification