| 摘要 |
A projection type display system having a position detection function which projects an image from an image projection device and optically detects a position of a target object between a surface on which the image is projected and the image projection device, includes: a position detection light source unit disposed on the image projection device to emit position detection light toward the target object; a light detector which detects the position detection light reflected by the target object in a detection area; and a position detection unit which detects the position of the target object based on a light reception result obtained by the light detector, wherein an intensity distribution of the position detection light is produced in an area to which the position detection light is supplied. |
