| 摘要 |
The illumination device in accordance with exemplary embodiments of the present invention is an illumination device including a light-emitting tube, an elliptical reflector, a parallelizing lens, a first lens array, a second lens array, and a polarized light conversion element. The polarized light conversion element includes a first polarized light separation unit having a single polarized light separation surface to conduct polarized light separation with respect to partial luminous fluxes of two rows, the first row and second row, of the second lens array and a single reflecting surface a second polarized light separation unit having a single polarized light separation surface to conduct polarized light separation with respect to partial luminous fluxes of two rows, the third row and fourth row, of the second lens array and a single reflecting surface, and a phase difference plate. As a result, the illumination device and projector of reduced cost, increased light utilization efficiency, and extended service life can be provided.
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