公开(公告)号：US11650403B2

公开(公告)日：2023-05-16

申请号：US16750777

申请日：2020-01-23

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Robin Sharma ,  Andrew John Ouderkirk ,  Christopher Yuan Ting Liao ,  Qi Zhang ,  Tanya Malhotra ,  Karol Constantine Hatzilias ,  Maik Scheller ,  Sheng Ye ,  Gregory Olegovic Andreev ,  Guohua Wei

IPC: G02B3/00 ,  G02B27/01 ,  G02B27/12 ,  G02B19/00 ,  G02B1/00 ,  G02B5/04 ,  G02B27/09 ,  H01S5/00 ,  H01S5/026 ,  H01S5/183 ,  H01S5/343

CPC classification number: G02B19/0047 ,  G02B1/002 ,  G02B3/00 ,  G02B5/045 ,  G02B27/0172 ,  G02B27/0179 ,  G02B27/0961 ,  G02B27/0972 ,  H01S5/005 ,  H01S5/026 ,  H01S5/183 ,  H01S5/3432 ,  H01S5/34353 ,  G02B2003/0093 ,  G02B2027/0178 ,  G02B2027/0187

Abstract: An example device may include a light source, an optical element, and, optionally, an encapsulant layer. A light beam generated by the light source may be received by the optical element and redirected towards an illumination target, such as an eye of a user. The optical element may include a material, for example, with a refractive index of at least approximately 2 at a wavelength of the light beam. The light source may be a semiconductor light source, such as a light-emitting diode or a laser. The optical element may be supported by an emissive surface of the light source. Refraction at an exit surface of the optical element, and/or within a metamaterial layer, may advantageously modify the beam properties, for example, in relation to illuminating a target. In some examples, the light source and optical element may be integrated into a monolithic light source module.