Patent ID: 8308303

Claim:
A projector comprising: spatial light modulation devices that are each configured to modulate light received through a light entrance surface of the corresponding spatial light modulation device according to an image signal, and each of which emits the modulated light through a light exit surface of the corresponding spatial light modulation device; and a cooling duct configured to flow a cooling air for sequentially cooling the spatial light modulation devices provided for each color light such that the cooling air flows over a first spatial light modulation device, and then the cooling air that has flowed over the first spatial light modulation device subsequently flows over a second spatial light modulation device, the cooling duct including: a first flow path formed by portions including the light entrance surfaces of the first spatial light modulation device and the second spatial light modulation device for the respective color lights, a second flow path formed by portions including the light exit surfaces of the first spatial light modulation device and the second spatial light modulation device, and a junction area where a portion of the cooling air flowing through the first flow path and a portion of the cooling air flowing through the second flow path join each other, the junction area being disposed at a downstream position of the cooling air with respect to the first spatial light modulation device provided for a predetermined color light whose light amount is the maximum in the respective color lights that enter the light entrance surface.