| 摘要 |
<p>Disclosed is a laser illumination device that can prevent interference patterns from forming when laser light is used as a light source, without requiring a larger or more complicated device or decreasing the illuminance. In said laser illumination device, a depolarizer (6), a fly's-eye lens (7), and condenser lenses (8 and 9) are arranged in that order in the path of laser light. The depolarizer (6) consists of a plurality of retarders (6a to 6d), sized in correspondence with the lens cells of the fly's-eye lens (7), in a 1:1 correspondence with said lens cells. Each retarder emits the incident laser light after applying a phase difference thereto. The retarders are arranged such that the polarization planes of light emitted from adjacent retarders differ by 45°.</p> |
