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:
Sep. 01, 2020
Filed:
Mar. 20, 2018
Koninklijke Philips N.v., Eindhoven, NL;
Olaf Thomas Johan Antonie Vermeulen, Oss, NL;
Nigel David Young, Redhill, GB;
Pascal Jean Henri Bloemen, Eindhoven, NL;
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Abstract
The invention relates to a mouthpiece () for illumination of teeth, e.g. for teeth whitening. The mouthpiece comprises a slab shaped light guide (), at least one light source arranged for injecting light into the light guide and an optically transparent element () arranged to contact the light guide. The optically transparent element has a lower refractive index than the light guide to enable total internal refection of the injected light. Light is coupled out of the light guide by an out-coupling structure () and through a part of the optically transparent part located between the light guide and the buccal side of the teeth to illuminated the teeth with uniform light.