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. 17, 2015
Filed:
Feb. 28, 2011
Bradley E. Reis, Westlake, OH (US);
Robert A. Reynolds, Iii, Bay Village, OH (US);
Yin Xiong, San Diego, CA (US);
Greg P. Kramer, Lyndhurst, OH (US);
Robert J. Umpleby, Olmsted Falls, OH (US);
Bradley E. Reis, Westlake, OH (US);
Robert A. Reynolds, III, Bay Village, OH (US);
Yin Xiong, San Diego, CA (US);
Greg P. Kramer, Lyndhurst, OH (US);
Robert J. Umpleby, Olmsted Falls, OH (US);
GrafTech International Holdings Inc., Parma, OH (US);
Abstract
A handheld device (), including a projector module () which includes a light source having a laser or at least one light emitting diode; a thermal management system which includes a heat collector () formed of a material having a thermo-mechanical design constant of at least 10 mm-W/m*K and having a non-planar shape, the heat collector in thermal contact with the light source; a heat spreader () having a surface area at least 1.5 times that of the surface area of the heat collector and a thermo-mechanical design constant of at least 10 mm-W/m*K, the heat spreader positioned in thermal contact with the heat collector, wherein thermo-mechanical design constant of a material is defined by thermal conductivity of the material multiplied by its average thickness.