Invention Grant
- Patent Title: Offsetting non-uniform brightness using a backlight assembly
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Application No.: US16258184Application Date: 2019-01-25
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Publication No.: US10996514B1Publication Date: 2021-05-04
- Inventor: Evan M. Richards
- Applicant: Facebook Technologies, LLC
- Applicant Address: US CA Menlo Park
- Assignee: Facebook Technologies, LLC
- Current Assignee: Facebook Technologies, LLC
- Current Assignee Address: US CA Menlo Park
- Agency: Fenwick & West LLP
- Main IPC: G02F1/13357
- IPC: G02F1/13357 ; G02B27/00 ; G02F1/1335

Abstract:
A headset includes a backlight assembly, a display panel, and an optics block. The backlight assembly includes an array of light emitting diodes (LEDs), a diffusing element, and a brightness enhancement film. The array of LEDs and the brightness enhancement film are configured in a way such that the light generated by the backlight assembly has a non-uniform brightness distribution. The display panel receives the light and convert the light to image light. The image light has at least the non-uniform brightness distribution. The optics block includes one or more optical elements that direct the image light to an eyebox of the headset. The optics block adds another non-uniform brightness distribution to the image light to offset the non-uniform brightness distribution from the backlight assembly, such that the image light directed to the eyebox has a target brightness distribution.
Information query
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