Patent ID: 8540374
Filing Date: 2013-09-24
Classification: G03B

Abstract:
1. A projector comprising: a plurality of optical modulation devices configured to modulate incident luminous flux; a projection optical device configured to project the luminous flux modulated by the plurality of optical modulation devices; a cooling fan configured to discharge air; and a duct having a discharge portion in which the discharged from the cooling fan flows along a direction approximately parallel to an optical axis of the projection optical device toward the plurality of optical modulation devices, wherein the air from the discharge portion cools the optical modulation devices from a lateral side thereof in disposed order, and the duct is disposed in a position that, in a cross-sectional view of the projection optical device and discharge portion taken along a plane perpendicular to the optical axis, the height position of a first center between the upper end and lower end of the discharge portion differs from the height position of the optical axis.