Patent ID: 8134599
Filing Date: 2012-03-13
Classification: H04N

Abstract:
1. A scanning image display apparatus, comprising: a light source; a scanning unit rotating a mirror to scan a light flux from the light source; an input unit operated by a user to input a display condition of an image; a controller changing a rotation angle of the mirror in the scanning unit in accordance with a signal from the input unit; a light-amount adjusting unit changing a light amount of the light flux; and a housing that stores therein the light source, the scanning unit and the light-amount adjusting unit, and that has an exit aperture through which the light flux exiting from the scanning unit to outside passes, wherein the controller calculates the illuminance at the exit aperture based on the rotation angle of the mirror and a transmittance of the light-amount adjusting unit, and controls the light-amount adjusting unit so that the illuminance is not changed even when the rotation angle is changed.