Invention Grant
- Patent Title: Light guide optical assembly
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Application No.: US16600512Application Date: 2019-10-13
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Publication No.: US10684403B2Publication Date: 2020-06-16
- Inventor: Yochay Danziger
- Applicant: LUMUS LTD.
- Applicant Address: IL Ness Ziona
- Assignee: Lumus Ltd.
- Current Assignee: Lumus Ltd.
- Current Assignee Address: IL Ness Ziona
- Agent Mark M. Friedman
- Main IPC: F21V8/00
- IPC: F21V8/00 ; G02B27/01 ; G02B6/34 ; G02B6/00 ; G02B27/10 ; G02B27/28 ; G02B5/18 ; G02B27/00

Abstract:
An optical assembly for optical aperture expansion combines facet reflective technology with diffractive technology. At least two diffractive components having opposite optical power (matching) are used, so that chromatic dispersion introduced by the first diffractive component will then be cancelled by the second diffractive component. The two diffractive components are used in combination with a reflective optical component to achieve more efficient aperture expansion (for near eye display), reducing distortions and noise, while also reducing design constraints on the system and individual components, as compared to conventional techniques. The assembly eliminates and/or reduces the need for polarization management, while enabling wider field of view. In addition, embodiments can have reduced nonuniformity, as compared to conventional single technology implementations, since the distortion patterns of the two technologies do not correlate.
Public/Granted literature
- US20200041713A1 LIGHT GUIDE OPTICAL ASSEMBLY Public/Granted day:2020-02-06
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