| 摘要 |
Disclosed is a light projection method and a projection type image display apparatus for performing the same. The projection type image display apparatus can obtain a uniformity of brightness of a pixel by controlling a brightness of a screen in a pixel unit forming an image. A micro lens array is installed to the front surface of an actuated mirror array. A light generated from a light source of optical energy is transformed to a parallel light by a field lens, and the transformed parallel light is condensed in the pixel unit by a micro lens corresponding to an individual pixel unit. The condensed light passing through the micro lens is reflected from a mirror of the actuated mirror array. The reflected light passes through another micro lens adjacent to the micro lens and forms an image on a screen. As a result, a light modulation in the individual pixel unit can be accomplished with ease. Also, the brightness of an image displayed on a screen is increased by concentrating with the micro lens and reflecting it. Also, a color filter is installed to the front of the micro lens. The color filter only allows for red, blue and green light to penetrate. The actuated mirror array controls the light path corresponding to the individual color. Therefore, a color image can be formed by using a single actuated mirror array.
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