Heat Sinking of Optically Filtered Illumination Systems
Original Publication Date: 1983-May-01
Included in the Prior Art Database: 2005-Feb-07
Incandescent lamp 10 is located on the focal axis of an elliptical reflector 11 which directs the light to the opposite focal axis of the ellipse for illuminating a line region of a document 12. Dichroic mirror 13 reflects infrared heat energy but passes visible light to the document 12. A heat sink 14 is located at the reflected focus 15 of the infrared energy to absorb and conduct away this energy before it has the opportunity to be re-reflected by reflector 11.