| 摘要 |
To provide a projection display device which can easily produce a high contrast, bright projection image, without obliquely mounting the light source. In a projection display device, a condenser lens is disposed such that its optical axis is disposed at a location parallel to an optical axis of a light source by moving the optical axis of the condenser lens with respect to the optical axis L of the light source in substantially the same direction that an optical axis of a projection lens 60 is moved with respect to the optical axis of the light source. Therefore, light can obliquely illuminate a liquid crystal light valve, and can be efficiently guided to the projection lens. Consequently, a high contrast, bright projection image can be easily provided.
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