Freestone Intellectual Property Law PLLC
Symmetrical facet Fresnel combiner
An optical combiner for a head mounted display includes a refractive material having a refractive index and a Fresnel surface formed in the refractive material. The Fresnel surface includes a plurality of Fresnel features that include an active surface and a draft surface. An active surface angle supporting the active surface is substantially the same as a draft surface angle supporting the draft surface such that active surface and the draft surface are symmetrical.
Facebook Technologies, LLC
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Robin Andrew John Ying Robert Dale Qi Karol Constantine
Sharma Ouderkirk Geng Cavin Zhang Hatzilias