| 摘要 |
A projection-type imaging device 1000 includes: a light source optical system 121 for emitting source light 122; image display elements 7 a- 7 c each having a display surface 127 on which a plurality of micromirrors 301 are placed and driving the plurality of micromirrors 301 according to a control signal representing a prescribed image so as to reflect the source light 122 incident on the display surface 127 toward a first direction and a second direction differing from the first direction so as to obtain first light 10 b and second light 10 a, respectively; a prism 6 for transmitting the first light 10 b and the second light 10 a; a projection optical system 8 for projecting the first light 10 b transmitted by the prism; an absorption section 19 for absorbing the second light 10 b transmitted by the prism 6; and cooling sections 22, 23 and 24 for cooling the absorption section 19 by a liquid refrigerant 20. The first light 10 b carries information on the prescribed image, the liquid refrigerant 20 is optically coupled to the prism 6 , and the second light 10 a reaches the absorption section 19 via the liquid refrigerant 20.
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