Patent ID: 7589904
Filing Date: 2009-09-15
Classification: G02B,G03B,H04N

Abstract:
1. A projection type image display device, comprising: an image generation source that generates an image; a first optical system having a plurality of lenses which expansion-projects the image from the image generation source; a second optical system that reflects the image from the first optical system; and a curved transparent member that is disposed between the first optical system and the second optical system, and covers a space between a surface of a lens positioned closest to the second optical system among the plurality of lenses, which outputs the image, and the surface of the second optical system which reflects the image; wherein the first optical system is housed in a vessel; a first guard is formed at an end of the vessel at the second optical system side; a second guard is formed on a side edge of the second optical system; and both ends of the transparent member are fitted to the first guard and the second guard.