| 摘要 |
PROBLEM TO BE SOLVED: To provide a polarized light irradiation device capable of increasing the light quantity of light emitted from the device, without increasing the size of a polarizing plate.SOLUTION: The polarized light irradiation device includes a light source 5, a main reflection plate 10, a polarizing plate 30, and an auxiliary reflection plate 20. The light source 5 emits the light including ultraviolet rays. The main reflection plate 10 controls the light distribution of the light emitted from the light source 5. The polarizing plate 30 is disposed on the traveling direction side of the light whose light distribution is controlled by the main reflection plate 10, with respect to the main reflection plate 10, and the light emitted from the light source 5 and the light whose light distribution is controlled by the main reflection plate 10 are made incident on the polarizing plate 30, so that the polarizing plate 30 emits polarized light. The auxiliary reflection plate 20 is disposed between the main reflection plate 10 and the polarizing plate 30 and reflects the light not going to the polarizing plate 30 in the light emitted from the light source 5 and the light whose light distribution is controlled by the main reflection plate 10 toward the side of the main reflection plate 10. |
