| 摘要 |
The present invention provides an image display apparatus comprising a light source, a coupling lens, an integrator and a light valve. If thetaLV1 is the largest value that can be taken by the angle formed by light irradiating said light valve and the optical axis as viewed along the short edges of said light valve, thetaLV2 is the largest value that can be taken by the angle formed by light irradiating said light valve and the optical axis as viewed along the long edges of said light valve, LLV1 is the length of the short edges of said light valve, LLV2 is the length of the long edge of said light valve and NALED is the effective numerical aperture of said coupling lens, then, the surface area of the light emitting region of said light source is not greater than (LLV1xthetaLV1/NALED)x(LLV2xthetaLV2/NALED). Such an image display apparatus is adapted to evenly and uniformly irradiate the light valve of the apparatus with rays of light emitted from the light source with an improved light irradiation efficiency.
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