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:
Dec. 13, 2005
Filed:
Dec. 02, 2003
Vyacheslav B. Birman, Rochester Hills, MI (US);
Werner Eckardt, Rochester, MI (US);
Qi Tao, Canton, MI (US);
Marcus Moell, Rochester Hills, MI (US);
Vyacheslav B. Birman, Rochester Hills, MI (US);
Werner Eckardt, Rochester, MI (US);
Qi Tao, Canton, MI (US);
Marcus Moell, Rochester Hills, MI (US);
Siemens VDO Automotive Corporation, Auburn Hills, unknown;
Abstract
An instrument display for a vehicle dash includes a unique light source and light guide assembly. The light source is incorporated directly into the light guide. A non-contact magnetic coupling transfers power from a circuit board to the light source. A textured surface is formed on one portion of the external surface of the light guide to evenly illuminate the light guide. Also, surface roughness on an opposing external surface portion of the light guide is varied depending on the length of the light guide to provide similar luminance for light guides having different lengths.