Invention Grant
- Patent Title: Color separation in planar waveguides using an optical filter between two diffractive optical elements (DOE)
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Application No.: US17080643Application Date: 2020-10-26
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Publication No.: US11249255B2Publication Date: 2022-02-15
- Inventor: Ivan Li Chuen Yeoh , Lionel Ernest Edwin , Hui-Chuan Cheng
- Applicant: Magic Leap, Inc.
- Applicant Address: US FL Plantation
- Assignee: Magic Leap, Inc.
- Current Assignee: Magic Leap, Inc.
- Current Assignee Address: US FL Plantation
- Agency: Kilpatrick Townsend & Stockton LLP
- Main IPC: G02B6/293
- IPC: G02B6/293 ; G02B27/10 ; G02B27/42 ; F21V8/00 ; G02B27/00 ; G02B27/44 ; G02B5/18

Abstract:
An eyepiece for projecting an image to an eye of a viewer includes a first planar waveguide positioned in a first lateral plane, a second planar waveguide positioned in a second lateral plane adjacent the first lateral plane, and a third planar waveguide positioned in a third lateral plane adjacent the second lateral plane. The first planar waveguide includes a first diffractive optical element (DOE) coupled thereto and disposed at a first lateral position. The second planar waveguide includes a second DOE coupled thereto and disposed at a second lateral position. The third planar waveguide includes a third DOE coupled thereto and disposed at the second lateral position. The eyepiece further includes an optical filter positioned between the second planar waveguide and the third planar waveguide at the second lateral position.
Public/Granted literature
- US20210109287A1 COLOR SEPARATION IN PLANAR WAVEGUIDES USING DICHROIC FILTERS Public/Granted day:2021-04-15
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