Dr. Masahiro Takeda Profile

Dr. Masahiro Takeda

at RIKEN

SPIE Involvement:

Author

Publications (8)

Proceedings Article | 1 October 2024 Presentation + Paper

Development of lightweight x-ray mirrors using carbon fiber reinforced plastic and ultra-precision machining technology

Hironori Matsumoto, Kairyu Tsuchiya, Takuya Hosobata, Kaito Murakami, Haruki Kuramoto, Mio Aoyagi, Hisamitsu Awaki, Shinya Morita, Masahiro Takeda, Yutaka Yamagata

Proceedings Volume 13093, 1309315 (2024) https://doi.org/10.1117/12.3018798

KEYWORDS: Carbon fiber reinforced plastics, X-rays, Mirrors, Mirror surfaces, X-ray telescopes, Polishing, Surface finishing, Reflection, Lightweight mirrors, Hard x-rays

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Proceedings Article | 26 August 2024 Poster + Paper

Novel echelle grating: reflector facet transmission grating and prism array for grism

Noboru Ebizuka, Takuya Hosobata, Masahiro Takeda, Yutala Yamagata, Takayuki Okamoto, Masahiro Konishi, Kazuya Matsubayashi, Kosuke Kushibiki, Shinobu Ozaki, Kentaro Motohara

Proceedings Volume 13100, 131005N (2024) https://doi.org/10.1117/12.3018192

KEYWORDS: Diffraction gratings, Echelle gratings, Prisms, Optical gratings, Diffraction, Reflection gratings, Refractive index, Zinc selenide, Prototyping, Equipment

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SPIE Journal Paper | 4 March 2024 Open Access

Development of a near-infrared wide-field integral field unit by ultra-precision diamond cutting

Kosuke Kushibiki, Shinobu Ozaki, Masahiro Takeda, Takuya Hosobata, Yutaka Yamagata, Shin-ya Morita, Toshihiro Tsuzuki, Keiichi Nakagawa, Takao Saiki, Yutaka Ohtake, Kenji Mitsui, Hirofumi Okita, Yutaro Kitagawa, Yukihiro Kono, Kentaro Motohara, Hidenori Takahashi, Masahiro Konishi, Natsuko Kato, Shuhei Koyama, Nuo Chen

JATIS, Vol. 10, Issue 01, 015004, (March 2024) https://doi.org/10.1117/12.10.1117/1.JATIS.10.1.015004

KEYWORDS: Mirrors, Telescopes, Image quality, Mirror surfaces, Vignetting, Surface roughness, Engineering, Stars, Optical components, Off axis mirrors

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Proceedings Article | 29 August 2022 Poster + Paper

Development status of a near-infrared integral field unit SWIMS-IFU

Kosuke Kushibiki, Shinobu Ozaki, Masahiro Takeda, Takuya Hosobata, Yutaka Yamagata, Shinya Morita, Keiichi Nakagawa, Takao Saiki, Yutaka Ohtake, Toshihiro Tsuzuki, Kenji Mitsui, Hirofumi Okita, Kentaro Motohara, Hidenori Takahashi, Masahiro Konishi, Natsuko M. Kato, Shuhei Koyama, Nuo Chen, Shogo Homan, Akino Yasuda

Proceedings Volume 12188, 121882V (2022) https://doi.org/10.1117/12.2627205

KEYWORDS: Mirrors, Image quality, Vignetting, Optical fabrication, Stray light, Fabrication, Tolerancing, Surface roughness

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Proceedings Article | 29 August 2022 Poster + Paper

Diamond machining of two-in-one optical element including slice mirror array for near-infrared integral-field spectrograph

Masahiro Takeda, Kousuke Kushibiki, Takuya Hosobata, Yutaka Yamagata, Shinya Morita, Takao Saiki, Keiichi Nakagawa, Yutaka Ohtake, Kentaro Motohara, Shinobu Ozaki, Toshihiro Tsuzuki, Hidenori Takahashi, Masahiro Konishi

Proceedings Volume 12188, 121882X (2022) https://doi.org/10.1117/12.2625703

KEYWORDS: Mirrors, Optical components, Diamond machining, Surface roughness, X-rays, X-ray computed tomography, Spectrographs, Aluminum, Astronomy

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Proceedings Article | 13 December 2020 Poster + Paper

Fabrication of mirror arrays with an ultra-precision cutting technique for a near-infrared integral field unit SWIMS-IFU

Kosuke Kushibiki, Takuya Hosobata, Masahiro Takeda, Yutaka Yamagata, Shin-ya Morita, Kentaro Motohara, Shinobu Ozaki, Toshihiro Tsuzuki, Hidenori Takahashi, Yukihiro Kono, Masahiro Konishi, Natsuko Kato, Yasunori Terao, Hiroki Nakamura

Proceedings Volume 11451, 114512Y (2020) https://doi.org/10.1117/12.2560431

KEYWORDS: Mirrors, Fabrication, Infrared telescopes, Telescopes, Aluminum, Surface roughness, Infrared imaging, Infrared spectroscopy, Infrared radiation, Astronomical imaging

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Proceedings Article | 12 July 2019 Open Access

Novel gratings for astronomical observations

N. Ebizuka, T. Okamoto, M. Takeda, T. Hosobata, Y. Yamagata, M. Sasaki, T. Kamizuka, I. Tanaka, T. Hattori, S. Ozaki, W. Aoki

Proceedings Volume 11180, 1118069 (2019) https://doi.org/10.1117/12.2536144

KEYWORDS: Diffraction gratings, Diffraction, Silicon, Telescopes, Astronomy, Spectrographs, Prototyping, Prisms, Astronomical telescopes, Reflection

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Proceedings Article | 19 June 2017 Open Access

Novel gratings for next-generation instruments of astronomical observations

N. Ebizuka, T. Okamoto, M. Takeda, T. Hosobata, Y. Yamagata, M. Sasaki, M. Uomoto, T. Shimatsu, S. Sato, N. Hashimoto, I. Tanaka, T. Hattori, S. Ozaki, W. Aoki

Proceedings Volume 10233, 102330M (2017) https://doi.org/10.1117/12.2264892

KEYWORDS: Diffraction gratings, Diffraction, Telescopes, Silicon, Space telescopes, Prisms, Astronomical telescopes, Spectrographs, Polarization, Fiber Bragg gratings, Gold, Reflectors, Ultraviolet radiation

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