| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a light source device, capable of forming illuminating light whose polarization direction is uniform with high efficiency, making the irradiation angle of the illuminating light small and realizing uniform illumination, when using mainly the light source device in a projection-type display device; and to realize the projection-type display device which is compact and bright, and has high image quality using the light source device. <P>SOLUTION: The light source device is equipped with a light source, a light-condensing means for forming a secondary light-emitting body image, 1st and 2nd reflection surfaces reflecting an optical path and a plane-of-polarization rotating means, for example. The 1st reflection surface reflects a linearly polarized light component in a prescribed direction, and the 2nd reflection surface reflects a linearly polarized light component in a prescribed direction orthogonal to the above-mentioned one, and two formed secondary light-emitting body images are made adjacent to each other in a state where their optical axes are deviated, then the plane-of-polarization rotating means acts predominantly only on the optical path of either so as to form the illuminating light of the linearly polarized light component nearly in the same direction. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
