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:
Feb. 06, 2007
Filed:
Jan. 03, 2005
Chen-ho Wu, Los Altos Hills, CA (US);
Chinmau James Hwang, San Jose, CA (US);
Chin-wang Tu, Cupertino, CA (US);
Ching Yuan Chung, Tao-Yuan County, TW;
Chen-Ho Wu, Los Altos Hills, CA (US);
Chinmau James Hwang, San Jose, CA (US);
Chin-Wang Tu, Cupertino, CA (US);
Ching Yuan Chung, Tao-Yuan County, TW;
Leotek Electronics Corporation, Santa Clara, CA (US);
Abstract
An illuminated sign having front, back and side surfaces. A plurality of first cavities are formed into the back surface of the sign. A plurality of light emitting modules are disposed in the plurality of first cavities. The modules each include a light emitting diode having an emission axis and for producing at least some light output generally parallel to the emission axis, an optical device disposed adjacent the light source having a reflective surface for reflecting the light output in directions that are generally perpendicular to the emission axis, and a guide element disposed adjacent the optical device for coupling the reflected light output into the interior of the sign. The guide element includes a second cavity formed therein in which the optical device is disposed. The front surface is illuminated by the coupled light output from the light emitting modules by reflection and/or diffusion inside the sign.