Design for stray-light reduction to a Martian ionospheric imager

Hiromu Nakagawa; Atsushi Yamazaki; Keigo Enya; Naofumi Fujishiro; Naoki Terada; Kanako Seki

doi:10.1364/AO.401523

Design for stray-light reduction to a Martian ionospheric imager

Hiromu Nakagawa, Atsushi Yamazaki, Keigo Enya, Naofumi Fujishiro, Naoki Terada, Kanako Seki

理学研究科・地球物理学専攻

研究成果: Article › 査読

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We demonstrate a new design high-contrast optics suitable for use on a stray-light reduction. Two-dimensional distribution of diffracted light was numerically analyzed and confirmed by a laboratory measurement to determine its characteristics. Laboratory measurements confirm stray-light performance with ∼10⁻⁸ rejection viewing as close as 1.0^◦ to a bright-light source. The present improvement replaces the conventional normal-edge vane by an edge with microscopic Gaussian-shaped structures. This permits simplified fabrication, provides even more weight reduction, and delivers improved performance for a given size.

本文言語	English
ページ（範囲）	9937-9943
ページ数	7
ジャーナル	Applied optics
巻	59
号	32
DOI	https://doi.org/10.1364/AO.401523
出版ステータス	Published - 2020 11月 10

ASJC Scopus subject areas

原子分子物理学および光学
工学（その他）
電子工学および電気工学

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10.1364/AO.401523

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AU - Terada, Naoki

AU - Seki, Kanako

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Design for stray-light reduction to a Martian ionospheric imager

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