Patent ID: 7436399

Claim:
An image projecting apparatus comprising: a light modulation element; a lamp illuminating the light modulation element; a lens for projecting an image formed in the light modulation element on a display screen; a visual mute unit for setting a visual mute mode in which a predetermined image is projected on the display screen; and a lamp output luminance adjusting unit for adjusting the output luminance of the lamp in response to the setting of the visual mute mode and the cancellation of the visual mute mode, the lamp output luminance adjusting unit lowering the output luminance of the lamp to a predetermined degree by lowering a power supplied to the lamp in accordance with the setting of the visual mute mode without turning off the lamp, and restores the output luminance of the lamp to a state before the setting of the visual mute mode in accordance with the cancellation of the setting of the visual mute mode.