Invention Grant
- Patent Title: High efficiency pancake lens
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Application No.: US17704850Application Date: 2022-03-25
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Publication No.: US11782279B2Publication Date: 2023-10-10
- Inventor: Andrew John Ouderkirk , Liliana Ruiz Diaz , Robin Sharma , Hannah Noble
- Applicant: META PLATFORMS TECHNOLOGIES, LLC
- Applicant Address: US CA Menlo Park
- Assignee: Meta Platforms Technologies, LLC
- Current Assignee: Meta Platforms Technologies, LLC
- Current Assignee Address: US CA Menlo Park
- Agency: Greenberg Traurig, LLP
- Main IPC: G02B27/01
- IPC: G02B27/01 ; G06T19/00 ; G02F1/13363 ; G02F1/1335 ; G02B27/10 ; G02B27/28 ; G02B27/14

Abstract:
An example apparatus may include a display, a beamsplitter having a first region and a second region, and a reflective polarizer. The reflectance of the second region of the beamsplitter may be appreciably greater than the reflectance of the first region; for example, at least approximately 20% greater. In some examples, the second region may be a peripheral region surrounding a generally centrally located first region. An example apparatus may be configured so that at least some light emitted by the display is transmitted through the first region of the beamsplitter, reflects from the reflective polarizer, reflects from the second region of the beamsplitter, and is then directed through the reflective polarizer to an eye of a user when the user wears the apparatus. Other devices, methods, systems, and computer-readable media are also disclosed.
Public/Granted literature
- US20220350148A1 HIGH EFFICIENCY PANCAKE LENS Public/Granted day:2022-11-03
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