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:
May. 22, 2007
Filed:
Dec. 01, 2004
Dongxue Wang, Lake Zurich, IL (US);
Zili LI, Barrington, IL (US);
George T. Valliath, Winnetka, IL (US);
Dongxue Wang, Lake Zurich, IL (US);
Zili Li, Barrington, IL (US);
George T. Valliath, Winnetka, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
The present invention provides a compact color illumination device () for emitting collimated light. The illumination device comprises a reflector cup (), a blazed diffraction grating () formed on the inner surface of the reflector cup, and a plurality of light emitting sources () positioned linearly in a focal plane of the reflector cup. Each light emitting source emits a different color of light that is incident on the blazed diffraction grating. The light emitted by the light emitting sources is reflected by the blazed diffraction grating, wherein the reflected light is collimated.