Patent ID: 7084931

Claim:
A projection-type imaging device comprising: a light source optical system for emitting source light; an image display element having a display surface on which a plurality of micromirrors are placed, the image display element driving the plurality of micromirrors according to a control signal representing a prescribed image so as to reflect the source light incident on the display surface toward a first direction and a second direction differing from the first direction so as to obtain first light and second light, respectively; a prism for transmitting the first light and the second light; a projection optical system for projecting the first light transmitted by the prism; an absorption section for absorbing the second light transmitted by the prism; and a cooling section for cooling the absorption section by a liquid refrigerant, wherein the first light carries information on the prescribed image, the liquid refrigerant is optically coupled to the prism, and the second light reaches the absorption section via the liquid refrigerant.