| 摘要 |
A color separation element includes a polarization dependent reflecting element having a different reflectivity dependent on a polarization plane and a wavelength of an incident light, and a polarization converting element, arranged at a predetermined angle to the polarization dependent reflecting element. The polarization converting element converts one linearly polarized light between a p-polarized light component and a s-polarized light component transmitted through the polarization dependent reflecting element into the other linearly polarized light which is reflected towards the polarization dependent reflecting element, and converts the other linearly polarized light between the p-polarized light component and the s-polarized light component transmitted through the polarization dependent reflecting element into the one linearly polarized light which is reflected towards the polarization dependent reflecting element.
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