Invention Grant
- Patent Title: Directional display apparatus
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Application No.: US18131322Application Date: 2023-04-05
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Publication No.: US11892718B2Publication Date: 2024-02-06
- Inventor: Graham J. Woodgate , Michael G. Robinson
- Applicant: RealD Spark, LLC
- Applicant Address: US CO Boulder
- Assignee: RealD Spark, LLC
- Current Assignee: RealD Spark, LLC
- Current Assignee Address: US CO Boulder
- Agent Penny L. Lowry
- Main IPC: G02F1/13
- IPC: G02F1/13 ; G02F1/01 ; G02F1/1337 ; F21V8/00 ; G02F1/13363 ; G02F1/1335

Abstract:
A dual view display for an automotive vehicle comprises a spatial light modulator and a polar control retarder comprising a switchable liquid crystal retarder arranged between a first pair of polarisers. The switchable liquid crystal retarder comprises a polarisation-switch retarder and a polar control retarder with an average director that is directed towards an off-axis viewing location. In a first temporal phase of operation, the spatial light modulator and polar control retarder are arranged to direct light comprising a first image towards a first direction and in a second temporal phase of operation to direct light comprising a second image towards a second direction.
Public/Granted literature
- US20230324729A1 Directional display apparatus Public/Granted day:2023-10-12
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