Patent ID: 8955983
Filing Date: 2015-02-17
Classification: F21V,G03B,H04N,H05K

Abstract:
1. A handheld device, comprising a. a projector module which comprises a light source comprising a laser or at least one light emitting diode; b. a thermal management system which comprises i. a heat collector formed of a material having a thereto-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; ii. an anisotropic graphite 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 defined by thermal conductivity of the material multiplied by its average thickness.