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:
Jul. 19, 2016
Filed:
Feb. 27, 2015
Lawrence M. Rice, Hillsboro, NH (US);
Robin A. Sweet, Hillsboro, NH (US);
Richard Holland, Stoddard, NH (US);
Lawrence M. Rice, Hillsboro, NH (US);
Robin A. Sweet, Hillsboro, NH (US);
Richard Holland, Stoddard, NH (US);
OSRAM SYLVANIA Inc., Wilmington, DE (US);
Abstract
An automotive lamp capsule () containing filament () mounted within a capsule envelope () that has a light-transmissive coating () that increases the color temperature of light passing therethrough. Two uncoated windows () on envelope () in register with filament () extend towards capsule base () and alternate, in a direction circumferentially around capsule envelope (), with two coated portions () at that axial location along optical axis (O). A distance from filament () to a lower edge () of window () bounds a region of light emitted from filament () whose color temperature is not increased by coating () and defines the hot spot () in a beam projected from a vehicle reflector () in which capsule () is mounted. Light emitted by filament () passing adjacent to windows () through regions of coating () form a spread light pattern () of advantageous, higher color temperature than previously achievable.