PROJECTION IMAGE DISPLAY APPARATUS

摘要

The projection image display apparatus comprises an illumination optical system for radiating illumination light, an optical modulator element for modulating the illumination light supplied from the illumination optical system based on an image signal and emitting the modulated light as image light, a TIR (Total Internal Reflecting) prism formed of a first prism and a second prism and a heat dissipating member mounted on a lateral face of the first prism. The first prism has an illumination-light reflecting face that reflects the illumination light. The second prism has an image-light entry face that receives the image light. The illumination-light reflecting face confronts the image-light entry face with a given space therebetween. The heat dissipating member is mounted to at least one of two lateral faces excluding an illumination-light entry face that receives the illumination light, the illumination-light reflecting face, and a transmission face through which the illumination light and the image light pass of the first prism.

主权项

1. A projection image display apparatus comprising:
an illumination optical system for radiating illumination light; an optical modulator element for modulating, based on an image signal, the illumination light supplied from the illumination optical system, and emitting the modulated light as image light; a total internal reflecting (TIR) prism including a first prism and a second prism, the first prism having an illumination-light reflecting face that reflects the illumination light, the second prism having an image-light entry face that receives the image light, the illumination-light reflecting face confronting the image-light entry face with a given space therebetween; and a heat dissipating member mounted to at least one of two lateral faces excluding an illumination-light entry face that receives the illumination light, the illumination-light reflecting face, and a transmission face through which the illumination light and the image light pass of the first prism.