| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a projection type display device capable of easily performing continuous light quantity adjustment without generating illuminance unevenness of light emitted to a light valve according to a video signal, and always displaying an image with sufficient contrast. <P>SOLUTION: A projection type display device comprises: a light valve 2; a light source 3a for generating light emitted to the light valve 2; an integrator lens 4 disposed on an optical path between the light source 3a and the light valve 2, and for uniformizing illuminance distribution of the light emitted from the light source 3a to the light valve 2; and a light quantity adjustment system 9 disposed on the optical path, and having a rotation mechanism 9a for rotating like a set of double doors in order to adjust the quantity of the light emitted from the light source 3a to the light valve 2. The rotation mechanism 9a is formed to be bent into a V-shape in a direction to reduce the quantity of light (to block light). <P>COPYRIGHT: (C)2013,JPO&INPIT |
