Patent ID: 7149041

Claim:
A heat dissipation structure for an optical engine, the optical engine comprising a light source, an optical main body and a projection lens, the light source generating an incident light beam, the optical main body having a reflective light valve for reflecting the incident light beam to become an image light beam or a dumped light beam, the image light beam being projected through the projection lens for forming an image, the dumped light beam being not projected into the projection lens, the heat dissipation structure comprising: a case enclosing the light paths of the incident light beam, the image light beam and the dumped light beam, an opening being disposed on the case, the dumped light beam being projected into the opening; a first heat-dissipating device fixed on the case and covering the opening for removing heat generated from the dumped light beam; and a heat-insulating device disposed between the first heat-dissipating device and the case for preventing heat conduction between the first heat-dissipating device and the case.