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.:

US 9033566 B1

PDF
Full Text
Expired
Date of Patent:
May. 19, 2015

Filed:

Jan. 06, 2014
Applicant:

Radiant Opto-electronics Corporation, Kaohsiung, TW;

Inventors:

Wei-Hsuan Chen, Kaohsiung, TW;

Yung-Hui Tai, Kaohsiung, TW;

Chun-Yi Wu, Kaohsiung, TW;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V 7/04 (2006.01); F21V 8/00 (2006.01);
U.S. Cl.
CPC ...
G02B 6/0011 (2013.01);
Abstract

A light guiding device includes a light input surface, a light output surface extending from a first edge of the light input surface, a connecting surface extending from a second edge of the light input surface, and a reflecting surface interconnecting the output surface and the connecting surface. Relationships of θ<φ, θ<θand L≧(AD)/tan θ are satisfied, where θis a critical angle for total internal reflection, θ is an angle between extensions of the connecting surface and the light output surface, φ is an angle between the reflecting and light output surfaces, (L) is a distance between the second edge and the end edge, and (AD) is a distance between a location of incidence of a light beam on the light input surface and one of the first or second edge.


Find Patent Forward Citations

Chen, Wei-Hsuan. (2015). Light guiding device and a lighting assembly incorporating the same (U.S. Patent No. 9033566). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9033566

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