| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To air-cool a transmission type polarizing plate attached to remove unnecessary polarized light from image light emitted from a reflective liquid crystal panel. <P>SOLUTION: The projection type display apparatus includes; a reflective polarizing plate 32 for each color light which transmits each of R light, G light and B light having a P polarized component subjected to color separation by a color separation optical system therethrough, allows each transmitted light to enter a corresponding reflective liquid crystal panel 33 for each color light, and reflects image light of each color having an S polarized component which has been subjected to light modulation in accordance with an image signal of each corresponding color light by the reflective liquid crystal panel 33 for each color light; a transmission type polarizing plate 34 for each color light which removes an unnecessary polarized component from the image light of each color reflected by the reflective polarizing plate 32 for each color light; a color combination optical system 40 which subjects the image light of each color transmitted through the transmission type polarizing plate 34 for each color light to color combination; and a projection lens 42, wherein the transmission type polarizing plate 34 for each color light is air-cooled by air-cooling means (26) when the transmission type polarizing plate 34 for each color light faces each incidence surface of the color combination optical system 40. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
