Invention Application
- Patent Title: HEAD MOUNTED DISPLAY WITH LIGHTGUIDE AND MULTIPLE COMBINERS
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Application No.: US17431986Application Date: 2019-12-04
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Publication No.: US20220121034A1Publication Date: 2022-04-21
- Inventor: Yi Qin , Ozan Cakmakci
- Applicant: GOOGLE LLC
- Applicant Address: US CA Mountain View
- Assignee: GOOGLE LLC
- Current Assignee: GOOGLE LLC
- Current Assignee Address: US CA Mountain View
- International Application: PCT/US2019/064406 WO 20191204
- Main IPC: G02B27/28
- IPC: G02B27/28 ; G02B27/01 ; G02B5/04 ; G02F1/31

Abstract:
A head mounted display (HMD) provides multiple fields of view of a single micro-display by time-multiplexing the provision of light of different polarizations. The HMD includes a micro-display, a lightguide, and a plurality of combiners coupled to the lightguide, wherein each combiner is configured to combine light of a different polarization. For example, the HMD can include two combiners, with one combiner configured to combine P-polarized light and the other combiner configured to combine S-polarized light. A polarizer switch is included in a filter stack for the lightguide, and a control module controls the switch to alternate the provision of light having P-polarization and S-polarization, respectively. The light of each polarization provides a different field of view of the micro-display.
Public/Granted literature
- US12174395B2 Head mounted display with lightguide and multiple combiners Public/Granted day:2024-12-24
Information query