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:
Nov. 03, 2009
Filed:
Mar. 19, 2007
Michael A. Meis, Stillwater, MN (US);
David J. Lundin, Woodbury, MN (US);
Scott D. Gullicks, Apple Valley, MN (US);
Charles D. Hoyle, Stillwater, MN (US);
Michael A. Meis, Stillwater, MN (US);
David J. Lundin, Woodbury, MN (US);
Scott D. Gullicks, Apple Valley, MN (US);
Charles D. Hoyle, Stillwater, MN (US);
3M Innovative Properties Company, Saint Paul, MN (US);
Abstract
A light injector includes a tapered solid light guide having a light input end, an opposing light output end, and a total internal reflection surface defining a longitudinal outer surface there between. The light input end includes an aperture extending into the tapered solid light guide defined by an aperture surface. A specularly reflective layer or film is disposed adjacent to the total internal reflection surface. A distance between the specularly reflective layer or film and the total internal reflection surface defines a first air gap. The aperture is configured to accept a lambertian light source.