Invention Grant
- Patent Title: Achromatic optical device based on birefringent materials having positive and negative birefringence dispersions
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Application No.: US16810714Application Date: 2020-03-05
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Publication No.: US11215743B2Publication Date: 2022-01-04
- Inventor: Junren Wang , Lu Lu , Fenglin Peng , Mengfei Wang , Yun-Han Lee
- 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: Millburn IP PLLC
- Main IPC: G02B5/30
- IPC: G02B5/30
Abstract:
An optical device includes a first layer including a first birefringent material having a negative birefringence dispersion property. The optical device also includes a second layer including a second birefringent material having a positive birefringence dispersion property. The first layer and the second layer are structurally patterned to provide at least one predetermined optical function.
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