Adjustable pupil distance wearable display
First Claim
Patent Images
1. A system for projecting an image, the system comprising:
- a frame to removably receive a plurality of projection surfaces, one at a time, each of the plurality of projection surfaces comprising a holographic optical element (HOE) at a location on the respective projection surface to reflect a projected image for a select interpupillary distance (IPD) when the respective projection surface is received in the frame, each HOE different in location and/or optical characteristics compared to the other HOEs; and
a projection system coupled to the frame, the projection system comprising;
a projector to project light onto a first select one of the plurality of projection surfaces received in the frame; and
a controller to receive an information element including an indication of an IPD of a user, determine a location of the HOE of the select one of the plurality of projection surfaces based on the indication of the IPD of the user, and send a control signal to the projector to cause the projector to project an image in onto the location of the HOE of the select one of the projection surfaces.
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Abstract
Disclosed herein are devices and methods to provide a display including a projection system and a removable lenses including a holographic optical element to receive light and reflect the light to an exit pupil. Each of the removable lenses may comprise a holographic optical element in a different position of the lens to change the position of the exit pupil. The projection system may project an image onto the holographic optical element to project the image to the exit pupil.
48 Citations
12 Claims
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1. A system for projecting an image, the system comprising:
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a frame to removably receive a plurality of projection surfaces, one at a time, each of the plurality of projection surfaces comprising a holographic optical element (HOE) at a location on the respective projection surface to reflect a projected image for a select interpupillary distance (IPD) when the respective projection surface is received in the frame, each HOE different in location and/or optical characteristics compared to the other HOEs; and a projection system coupled to the frame, the projection system comprising; a projector to project light onto a first select one of the plurality of projection surfaces received in the frame; and a controller to receive an information element including an indication of an IPD of a user, determine a location of the HOE of the select one of the plurality of projection surfaces based on the indication of the IPD of the user, and send a control signal to the projector to cause the projector to project an image in onto the location of the HOE of the select one of the projection surfaces. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method to project a virtual image, the method comprising:
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receiving an information element including an indication of an interpupillarv distance (IPD) of a user; determining a location of a holographic optical element (HOE) on a projection surface removably received in a frame based on the received indication of the IPD of the user; sending a control signal to a projector coupled to the frame to project an image onto the location of the HOE; projecting an the image onto the location of the HOE in response to the control signal; reflecting the image from the HOE to an exit pupil; and selecting the projection surface from a plurality of projection surfaces removably receivable within the frame, each of the plurality of projection surfaces comprising a HOE at a location on the respective projection surface is received in the frame, each HOE different in location and/or optical characteristics compared to the other HOEs. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification