PROJECTION-TYPE IMAGE DISPLAY DEVICE AND LIGHT QUANTITY ADJUSTMENT METHOD

摘要

A projection-type image display device includes: a light source; a display element that displays an image based on an input video signal; a trapezoidal distortion correction unit that performs pixel conversion in which pixel data of the input video signal are compressed or interpolated and supplies the display element with the corrected signal that includes a first video signal that is the video signal concerning which the pixel conversion has been carried out; a detection unit that detects the luminance distribution of the first video signal; and an adjustment unit that adjusts the light quantity of the light source based on the detected luminance distribution data.