Patent ID: 9411217
Filing Date: 2016-08-09
CPC Classification: G02B,G03B

Claim Text:
1. A projector comprising: a light source; a light control apparatus having a light shield portion that shields light emitted from the light source, the light control apparatus adjusting the amount of light that passes therethrough; an optical element that is disposed on the light exiting side of the light shield portion and optically converts light incident on the optical element; a cooling fan that sends cooling air; and a duct that guides the cooling air sent from the cooling fan to the light shield portion and the optical element, wherein the duct has a blowoff port off which the guided cooling air is blown toward the light shield portion and the optical element, and the light shield portion changes the amount of covered light-shield-side portion of the blowoff port in accordance with the amount of shielded light.