The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 16, 2022
Filed:
Dec. 19, 2019
Facebook Technologies, Llc, Menlo Park, CA (US);
Robin Sharma, Redmond, WA (US);
Andrew John Ouderkirk, Redmond, WA (US);
Christopher Yuan Ting Liao, Seattle, WA (US);
Qi Zhang, Kirkland, WA (US);
Tanya Malhotra, Redmond, WA (US);
Karol Constantine Hatzillias, Kenmore, WA (US);
Maik Scheller, Redmond, WA (US);
Sheng Ye, Redmond, WA (US);
Gregory Olegovic Andreev, Redmond, WA (US);
Facebook Technologies, LLC, Menlo Park, CA (US);
Abstract
An example device may include a light source, an optical element, and an encapsulant layer. A light beam generated by the light source may be received by the optical element, and redirected into the encapsulant layer. The optical element may include a high-index material, for example, with a refractive index of at least approximately 1.5 at the 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 embedded in the encapsulant layer, and the optical element may have a curved exit surface. Refraction at the exit surface of the optical element may redirect the light beam towards a target. In some examples, the curvature of a freeform exit surface may be configured to improve the uniformity of target illumination