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:
Jan. 15, 2019
Filed:
Jun. 30, 2017
Asml Netherlands B.v., Veldhoven, NL;
Teunis Willem Tukker, Eindhoven, NL;
Nitesh Pandey, Eindhoven, NL;
Coen Adrianus Verschuren, Eindhoven, NL;
ASML Netherlands B.V., Veldhoven, NL;
Abstract
An illumination system has a microLED array. The microLED arrayis imaged or placed very close to a phosphor coated glass discwhich upconverts the light from the microLED array into a narrow band emission. The plate has at least two different photoluminescent materials arranged to be illuminated by the microLED array and to thereby emit output light. The different photoluminescent materials have different emission spectral properties of the output light, e.g. different center wavelength and optionally different bandwidth. Illumination of different photoluminescent materials by the illumination sources is selectable, by selective activation of the microLEDs or by movement of the photoluminescent materials relative to the illumination sources, to provide different illumination of the different photoluminescent materials. This provides tunable spectral properties of the output light. Selectively configurable filtersare arranged to filter the output light in accordance with the selected illumination of the different photoluminescent materials.