| 摘要 |
PROBLEM TO BE SOLVED: To effectively use light in a horizontal plane and also a vertical plane, as for a projector using integrator illumination. SOLUTION: The projector is provided with a light source 35, integrator lens bodies 4 and 5 which are arranged on an optical axis so as to condense the light emitted from the light source 35, and a liquid crystal panel 7 which is irradiated with the light condensed by both integrator lens bodies 4 and 5 on a chassis. Two auxiliary lenses 1 and 2 are arranged between the integrator lens body 5 positioned close to the liquid crystal panel 7 and the liquid crystal panel 7. As for the auxiliary lenses 1 and 2, the light incident surface is formed to a convex 10, and as for the convex 10, the curvature in one of the vertical plane and the horizontal plane is made larger than the curvature in the other plane. The auxiliary lenses 1 and 2 are arranged so that they may be mutually shifted by 90 deg. around the optical axis, and the refracting angle of the light arriving at the liquid crystal panel 7 after being emitted from the integrator lens body 5 in the vertical plane is made differ from that in the horizontal plane through both auxiliary lenses 1 and 2.
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