| 摘要 |
An image display apparatus for displaying an image by projecting light corresponding to an image signal from a display device to a display unit. The image display apparatus includes an illuminating optical system for emitting light from a light source, a display device irradiated with light from the illuminating optical system and adapted for controlling the amount of reflected or transmitted light projected, a drive circuit for driving the display device, and a detection system for detecting information on the intensity of light from the light source to output the information on the integral amount of light from the start of the image display within a predetermined display period according to the information. By driving the drive circuit according to the output signal of the detection system, the reflection time or transmission time of the light in the display device is controlled, and thereby the amount of reflected or transmitted light is controlled to display an image on the display unit. Thus, the variation of the luminance level of the displayed image can be substantially constant to reduce the flicker phenomenon and to enhance the image quality.
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