| 摘要 |
A projector type headlight (10) can include a projection lens (20) arranged on an optical axis extending in a longitudinal direction of a vehicle, and a light source unit (30) arranged on a more rear side than a back side focal plane of the projection lens (20), the projection lens (20) including resin lenses (22, 24) which are arranged on the optical axis. A resin lens (24) out of the resin lenses arranged closer to the light source unit (30) includes a diffraction grating (24c) provided on a lens face (S3) in a side opposite to a light source (30), the resin lens (24) out of the resin lenses arranged closer to the light source unit (30) has a lens face (S4) having a positive power, which is arranged in a light source side, and the diffraction grating (24c) is designed so as to cancel chromatic aberration of light emitted from the light source unit (30) and emitted forward through the resin lenses (22, 24). |
