EYEPIECE WITH SWITCHABLE REFLECTOR FOR HEAD WEARABLE DISPLAY
First Claim
1. An eyepiece for a head wearable display, the eyepiece comprising:
- a light guide component for guiding display light received at a peripheral location offset from a viewing region and emitting the display light along an eye-ward direction in the viewing region, the light guide component including;
an input surface oriented to receive the display light into the light guide component at the peripheral location;
an eye-ward facing side;
a world facing side;
a total internal reflection (“
TIR”
) portion disposed proximal to the input surface to guide the display light received through the input surface using TIR off of the eye-ward and world facing sides; and
a partially reflective portion including a partially reflective element disposed over the eye-ward facing side and a switchable reflector disposed over the world facing side, the partially reflective portion disposed distal to the input surface to receive the display light from the TIR portion and to guide the display light via reflections off of the partially reflective element and the switchable reflector.
2 Assignments
0 Petitions
Accused Products
Abstract
An eyepiece for a head wearable display includes a light guide component for guiding display light received at a peripheral location offset from a viewing region and emitting the display light along an eye-ward direction in the viewing region. The light guide component includes an input surface to receive the display light into the light guide component, an eye-ward facing side, a world facing side, a total internal reflection (“TIR”) portion disposed proximal to the input surface to guide the display light received through the input surface using TIR, and a partially reflective portion including a partially reflective element disposed over the eye-ward facing side and a switchable reflector disposed over the world facing side. The partially reflective portion is disposed to receive the display light from the TIR portion and to guide the display light via reflections off of the partially reflective element and the switchable reflector.
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Citations
24 Claims
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1. An eyepiece for a head wearable display, the eyepiece comprising:
a light guide component for guiding display light received at a peripheral location offset from a viewing region and emitting the display light along an eye-ward direction in the viewing region, the light guide component including; an input surface oriented to receive the display light into the light guide component at the peripheral location; an eye-ward facing side; a world facing side; a total internal reflection (“
TIR”
) portion disposed proximal to the input surface to guide the display light received through the input surface using TIR off of the eye-ward and world facing sides; anda partially reflective portion including a partially reflective element disposed over the eye-ward facing side and a switchable reflector disposed over the world facing side, the partially reflective portion disposed distal to the input surface to receive the display light from the TIR portion and to guide the display light via reflections off of the partially reflective element and the switchable reflector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of displaying an image to a user of a head wearable display, the method comprising:
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receiving display light into a light guide component through an input surface disposed at a peripheral location offset from a viewing region of the head wearable display; guiding the display light along a total internal reflection (“
TIR”
) portion of the light guide component disposed proximal to the input surface via TIR;guiding the display light received from the TIR portion along a partially reflective portion of the light guide component via partial reflections off of a partially reflective element disposed over an eye-ward facing side of the light guide component and reflections off of a switchable reflector disposed over a world facing side of the light guide component; and emitting the display light out the eye-ward facing side through the partially reflective element in the viewing region along an eye-ward direction. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification