Diffractive Optical Element for Noise-reduced Beam Shaping of Multi-array Point Light Source
- 주제(키워드) Diffractive optical element , Incoherent beam shaping , Noise management
- 발행기관 한국광학회
- 발행년도 2021
- 총서유형 Journal
- KCI ID ART002766898
- 본문언어 영어
초록/요약
An arrayed diffractive optical element design for the beam-shaping of a multi-array light source is proposed. This is an essential device for recent optical security and face recognition applications. In practice, we devise a DC noise reduction technique featuring high fabrication error tolerance regarding the multi-array light source diffractive optical elements, as a necessary part of the proposed design method. The spherical diverging illumination leads to DC-conjugate noise spreading. The main idea is tested experimentally, and the multi-array light source diffraction pattern is investigated numerically.
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