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:
Oct. 04, 2022
Filed:
Jan. 11, 2018
Koninklijke Philips N.v., Eindhoven, NL;
Olaf Thomas Johan Antonie Vermeulen, Oss, NL;
Adrianus Wilhelmus Dionisius Maria Van Den Bijgaart, Helvoirt, NL;
Pascal Jean Henri Bloemen, Eindhoven, NL;
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Abstract
The invention relates to an oral care device for teeth whitening or other purpose. The device is designed to provide a uniform light intensity distribution at the teeth. This is achieved by use of a light guide which at some surface parts is separated from surrounding parts of the mouthpiece of the oral care device by air-filled separation portions. The light guide mixes the injected light to improve the uniformity of the light intensity. In 5 order to couple light out from the light guide, the mouthpiece comprises an out-coupling structure located opposite to the buccal side of the teeth. The out-coupling structure may be shaped, e.g. by changing the area or density of parts of the out-coupling structure depending on the distance to a location of the light guide where light is injected.