| 摘要 |
The purpose of the present invention is to provide an optical component (phase modulation element) and an imaging device using the optical component, the optical component capable of reducing the dimensional accuracy required for setting a phase modulation surface and suppressing PSF peaks. In order to add a prescribed blur to an optical image in an imaging device having a function of enlarging the depth of focus, the present invention provides an optical component that is incorporated in the optical system of the imaging device and is characterized by having a plurality of ring segments, with a height difference in the optical axis direction being provided between at least a pair of the ring segments. |
