PROJECTION TYPE DISPLAY DEVICE AND IMAGE DISPLAY SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a projection type display device capable of reducing the adhesion of foreign matter to a light modulation element.SOLUTION: The projection type display device includes a light-shielding member 32 which includes an opening through which light from a light source passes and a light modulation element unit 31a which is provided so as to face the light-shielding member 32 and is irradiated with the light after passing through the opening of the light-shielding member 32. The light-shielding member 32 includes a first area and a second area located between the first area and the opening. A first temperature difference between the light-shieling member 32 and the light modulation element unit 31a in the fist area is larger than a second temperature difference between the light-shielding member 32 and the light modulation element unit 31a in the second area.