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:
Mar. 21, 2023
Filed:
Dec. 03, 2020
Lumileds Llc, San Jose, CA (US);
Rob Jacques Paul Engelen, Eindhoven, NL;
Lumileds LLC, San Jose, CA (US);
Abstract
A lighting device and method for manufacturing the lighting device are provided. A substrate contains at least a first surface and a second surface opposing the first surface. Light-sensitive material is provided on the first surface and/or the second surface. The light-sensitive material is exposed to light by applying the light from a light source onto a mask having a periodic pattern of light-attenuating features with interspaced light-permeable features. The light forms a periodic distribution of high intensity regions with interspaced low intensity regions at the first surface and/or the second surface. A periodic structure is formed based on the exposed light-sensitive material and includes light-attenuating features and light-permeable features corresponding to the light-attenuating features and light-permeable features of the mask.