| 摘要 |
<p>An image projection apparatus (i.e., a projector), having a light source unit 200, being disposed within an inside of an about box-like housing 100, a light modulation unit 300, and a projection optic unit400 for projecting the image light from the light modulation unit, enlargedly, wherein the projection optic unit has a lens group including a plural number of lens elements, which are disposed symmetrically with respect to an optical axis, and a lens element having a configuration asymmetric with respect to the optical axis, sequentially, directing from the image display element towards projection of the light. And, further there is provided a reflectionmirror, being attached in a part of the housing, to be set up at a predetermined position along with the optical axis of the projection optic unit within an outside of the housing, and thereby reflecting the image light emitted from the projection optic unit, and further the reflection mirror has an free-curved surface configuration being asymmetric with respect to the optical axis of the projection optic unit.
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