Beam angle sensor in virtual/augmented reality system
First Claim
1. A display system comprising:
- a projection assembly configured to emit light;
a sensing assembly configured to measure at least one parameter of light incident thereon;
a waveguide apparatus;
an in-coupling optical element optically coupled to the projection assembly and waveguide apparatus, the in-coupling optical element and configured to in-couple light from the projection assembly into the waveguide apparatus;
a first out-coupling optical element disposed upon the waveguide apparatus and configured to direct light from the projection assembly guided within the waveguide apparatus out of the waveguide apparatus to an eye of a user;
a second out-coupling optical element disposed upon the waveguide apparatus and optically coupled to the sensing assembly, the second out-coupling optical element configured to direct light from the projection assembly guided within the waveguide apparatus to the sensing assembly;
a control subsystem in communication with the projection assembly and the sensing assembly, the control subsystem configured to;
cause the projection assembly to emit light corresponding to a pixel of an image frame;
receive measurement data from the sensing assembly indicating at least one parameter of light corresponding to the pixel of the image frame;
determine, based on the measurement data received from the sensing assembly, an angle at which light corresponding to the pixel of the image frame is incident the sensing assembly; and
control operation of the projection assembly based at least in part on the determined angle at which light corresponding to the pixel of the image frame is incident the sensing assembly.
3 Assignments
0 Petitions
Accused Products
Abstract
A virtual image generation system for use by an end user comprises a projection subsystem configured for generating a collimated light beam, and a display configured emitting light rays in response to the collimated light beam to display a pixel of an image frame to the end user. The pixel has a location encoded with angles of the emitted light rays. The virtual image generation system further comprises a sensing assembly configured for sensing at least one parameter indicative of at least one of the emitted light ray angles, and a control subsystem configured for generating image data defining a location of the pixel, and controlling an angle of the light beam relative to the display based on the defined location of the pixel and the sensed parameter(s).
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Citations
20 Claims
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1. A display system comprising:
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a projection assembly configured to emit light; a sensing assembly configured to measure at least one parameter of light incident thereon; a waveguide apparatus; an in-coupling optical element optically coupled to the projection assembly and waveguide apparatus, the in-coupling optical element and configured to in-couple light from the projection assembly into the waveguide apparatus; a first out-coupling optical element disposed upon the waveguide apparatus and configured to direct light from the projection assembly guided within the waveguide apparatus out of the waveguide apparatus to an eye of a user; a second out-coupling optical element disposed upon the waveguide apparatus and optically coupled to the sensing assembly, the second out-coupling optical element configured to direct light from the projection assembly guided within the waveguide apparatus to the sensing assembly; a control subsystem in communication with the projection assembly and the sensing assembly, the control subsystem configured to; cause the projection assembly to emit light corresponding to a pixel of an image frame; receive measurement data from the sensing assembly indicating at least one parameter of light corresponding to the pixel of the image frame; determine, based on the measurement data received from the sensing assembly, an angle at which light corresponding to the pixel of the image frame is incident the sensing assembly; and control operation of the projection assembly based at least in part on the determined angle at which light corresponding to the pixel of the image frame is incident the sensing assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A display system comprising:
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a projection assembly configured to emit light; a sensing assembly optically coupled to the projection assembly and configured to measure at least one parameter of light incident thereon; a control subsystem in communication with the projection assembly and the sensing assembly, the control subsystem configured to; cause the projection assembly to emit light corresponding to a pixel at a particular position within an image frame; receive measurement data from the sensing assembly indicating at least one parameter of light corresponding to the pixel of the image frame; determine, based on the measurement data received from the sensing assembly, an angle at which light corresponding to the pixel of the image frame is incident the sensing assembly; compute a discrepancy between the determined angle and an angle corresponding to the particular position of the pixel within the image frame; and control operation of the projection assembly based at least in part on the computed discrepancy. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification