| 摘要 |
<p>The illumination device in accordance with the present invention is an illumination device 100 comprising a light-emitting tube 112, an elliptical reflector 114, a parallelizing lens 116, a first lens array 120, a second lens array 130, and a polarized light conversion element 140, wherein the polarized light conversion element 140 comprises a first polarized light separation unit 145L having a single polarized light separation surface 141L for conducting polarized light separation with respect to partial luminous fluxes of two rows, the first row and second row, of the second lens array 130 and a single reflecting surface 142L a second polarized light separation unit 145R having a single polarized light separation surface 141R for conducting polarized light separation with respect to partial luminous fluxes of two rows, the third row and fourth row, of the second lens array 130 and a single reflecting surface 142R, and a phase difference plate 143. As a result, the illumination device and projector of reduced cost, increased light utilization efficiency, and extended service life can be provided.</p> |
