Eyepiece for near eye display system
First Claim
1. An optical display system configured to transmit light along a light path to a user'"'"'s eye, the display system comprising:
- a circular polarizing reflector configured to reflect light with a first polarization originating from an image source;
a quarter wave plate positioned downstream of the circular polarizing reflector in the light path, the quarter wave plate configured to rotate the polarization of the light from the first polarization to a second polarization; and
a curved linear polarizing reflector positioned downstream of the quarter wave plate, the curved linear polarizing reflector configured to reflect the light with the second polarization back through the quarter wave plate along the light path in the direction of the circular polarizing reflector;
wherein the quarter wave plate is further configured to rotate the polarization of the light received from the curved linear polarizing reflector from the second polarization to a third polarization; and
wherein the circular polarizing reflector is further configured to receive the light having the third polarization from the quarter wave plate and to transmit the light with the third polarization toward the user'"'"'s eye.
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Accused Products
Abstract
An optical display system configured to transmit light along a light path to a user'"'"'s eye, the display system comprising a circular polarizing reflector configured to reflect light with a first polarization from an image source, a quarter wave plate downstream of the circular polarizing reflector in the light path and configured to rotate the polarization of the light to a second polarization, and a curved linear polarizing reflector downstream of the quarter wave plate and configured to reflect the light back through the quarter wave plate along the light path in the direction of the circular polarizing reflector. The quarter wave plate further configured to rotate the polarization of the light received from the curved linear polarizing reflector to a third polarization and the circular polarizing reflector further configured to receive said light from the quarter wave plate and transmit the light toward the user'"'"'s eye.
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Citations
20 Claims
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1. An optical display system configured to transmit light along a light path to a user'"'"'s eye, the display system comprising:
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a circular polarizing reflector configured to reflect light with a first polarization originating from an image source; a quarter wave plate positioned downstream of the circular polarizing reflector in the light path, the quarter wave plate configured to rotate the polarization of the light from the first polarization to a second polarization; and a curved linear polarizing reflector positioned downstream of the quarter wave plate, the curved linear polarizing reflector configured to reflect the light with the second polarization back through the quarter wave plate along the light path in the direction of the circular polarizing reflector; wherein the quarter wave plate is further configured to rotate the polarization of the light received from the curved linear polarizing reflector from the second polarization to a third polarization; and wherein the circular polarizing reflector is further configured to receive the light having the third polarization from the quarter wave plate and to transmit the light with the third polarization toward the user'"'"'s eye. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of transmitting light along a light path to a user'"'"'s eye, comprising:
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reflecting light originating from an image source having a first polarization off of a circular polarizing reflector along the light path toward a quarter wave plate; rotating the polarization of the light from the first polarization to a second polarization with the quarter wave plate and transmitting the light with the second polarization along the light path toward a curved linear polarizing reflector; reflecting the light off of the curved linear polarizing reflector and transmitting the light along the light path back toward the quarter wave plate; rotating the polarization of the light from a second polarization to a third polarization with the quarter wave plate and transmitting the light along the light path toward the circular polarizing reflector; and transmitting the light through the circular polarizing reflector along the light path toward the user'"'"'s eye. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A method of transmitting light along a light path to a user'"'"'s eye, comprising:
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converting the polarization of light from an image source to a first polarization via a fixed wave plate positioned upstream of a circular polarizing reflector on the light path; transmitting the light from the fixed wave plate along the light path toward a prism positioned on the light path between fixed wave plate and the circular polarizing reflector; reflecting the light via total internal reflection off of an interior surface of the prism; transmitting the light along the light path toward the circular polarizing reflector; reflecting the light originating from the image source having the first polarization off of a circular polarizing reflector along the light path toward a quarter wave plate; rotating the polarization of the light from the first polarization to a second polarization with the quarter wave plate and transmitting the light with the second polarization along the light path toward a curved linear polarizing reflector; reflecting the light off of the curved linear polarizing reflector and transmitting the light along the light path back toward the quarter wave plate; rotating the polarization of the light from a second polarization to a third polarization with the quarter wave plate and transmitting the light along the light path toward the circular polarizing reflector; and transmitting the light through the circular polarizing reflector along the light path toward the user'"'"'s eye.
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Specification