Mr. Kenji Mitsui Profile

Kenji Mitsui

at National Astronomical Observatory of Japan

SPIE Involvement:

Author

Publications (17)

SPIE Journal Paper | 4 March 2024 Open Access

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

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

Poster + Paper

Optical alignment and performance evaluation of the Sunrise Chromospheric Infrared spectroPolarimeter (SCIP) for SUNRISE III

Yusuke Kawabata, Yukio Katsukawa, Toshihiro Tsuzuki, Fumihiro Uraguchi, Kenji Mitsui, Kazuya Shinoda, Tomonori Tamura, Yoshifumi Nodomi, Hirohisa Hara, Masahito Kubo

Proceedings Volume 12184, 1218427 (2022) https://doi.org/10.1117/12.2627580

KEYWORDS: Modulation transfer functions, Optical alignment, Cameras, Mirrors, Optical components, Infrared spectroscopy, Infrared radiation, Monochromatic aberrations, Tunable lasers

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Proceedings Article | 13 December 2020 Poster + Paper

Poster + Paper

Performances of an integral field unit for FOCAS on the Subaru telescope

Shinobu Ozaki, Takashi Hattori, Kentaro Aoki, Chien-Hsiu Lee, Mitsuhiro Fukushima, Hikaru Iwashita, Kenji Mitsui, Yoko Tanaka, Toshihiro Tsuzuki, Norio Okada, Yoshiyuki Obuchi, Satoshi Miyazaki, Takuya Yamashita

Proceedings Volume 11447, 114475T (2020) https://doi.org/10.1117/12.2560602

KEYWORDS: Telescopes, Spectrographs, Galactic astronomy, Optical imaging, Cameras, Image quality, Absorption, Mirrors, Coating

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SPIE Journal Paper | 18 February 2015

Fabrication of 721-pixel silicon lens array of a microwave kinetic inductance detector camera

Kenji Mitsui, Tom Nitta, Norio Okada, Yutaro Sekimoto, Kenichi Karatsu, Shigeyuki Sekiguchi, Masakazu Sekine, Takashi Noguchi

JATIS, Vol. 1, Issue 02, 025001, (February 2015) https://doi.org/10.1117/12.10.1117/1.JATIS.1.2.025001

KEYWORDS: Silicon, Antireflective coatings, Cameras, Sensors, Microwave radiation, Inductance, Epoxies, Spindles, Refractive index, Surface roughness

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Proceedings Article | 12 September 2014 Paper

Paper

A monolithic deformable mirror with latchable mechanical actuation (LATCHAMAN) for space-borne telescopes

Keigo Enya, Hirokazu Kataza, Mitsuhiro Fukushima, Kenji Mitsui, Norio Okada, Hikaru Iwashita, Kanae Haze, Aoi Takahashi, Takayuki Kotani, Tomoyasu Yamamuro, Hitomi Kobayashi

Proceedings Volume 9219, 92190P (2014) https://doi.org/10.1117/12.2075454

KEYWORDS: Mirrors, Space telescopes, Telescopes, Exoplanets, Prototyping, Stars, Wavefronts, Aluminum, Infrared telescopes, Deformable mirrors

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Proceedings Article | 2 August 2014 Paper

Paper

A trial production of the image slicer unit for next generation infrared instruments and the assembly of the evaluation system of the pseudo slit image quality

Itsuki Sakon, Takashi Onaka, Hirokazu Kataza, Yoshiko Okamoto, Mitsuhiko Honda, Hitoshi Tokoro, Naofumi Fujishiro, Yuji Ikeda, Hiroyuki Nakagawa, Okiharu Kirino, Kenji Mitsui, Norio Okada

Proceedings Volume 9143, 91434U (2014) https://doi.org/10.1117/12.2057341

KEYWORDS: Mirrors, Infrared radiation, Image quality, Infrared imaging, Image filtering, Optical filters, Laser imaging, Assembly equipment, Black bodies, Spectroscopes

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Proceedings Article | 28 July 2014 Paper

Paper

Development of a slicer integral field unit for the existing optical spectrograph FOCAS: progress

Shinobu Ozaki, Yoko Tanaka, Takashi Hattori, Kenji Mitsui, Mitsuhiro Fukushima, Norio Okada, Yoshiyuki Obuchi, Toshihiro Tsuzuki, Satoshi Miyazaki, Takuya Yamashita

Proceedings Volume 9151, 915149 (2014) https://doi.org/10.1117/12.2054838

KEYWORDS: Mirrors, Telescopes, Spectrographs, Zemax, Prototyping, Spherical lenses, Vignetting, Image quality, Sensors, Cameras

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Proceedings Article | 23 July 2014 Paper

Paper

Developments of wide field submillimeter optics and lens antenna-coupled MKID cameras

Y. Sekimoto, T. Nitta, K. Karatsu, M. Sekine, S. Sekiguchi, T. Okada, S. Shu, T. Noguchi, M. Naruse, K. Mitsui, N. Okada, T. Tsuzuki, A. Dominjon, H. Matsuo

Proceedings Volume 9153, 91532P (2014) https://doi.org/10.1117/12.2055666

KEYWORDS: Cameras, Silicon, Sensors, Resonators, Microwave radiation, Antennas, Epoxies, Optical cryogenics, Dielectrics, Aluminum

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Proceedings Article | 23 July 2014 Paper

Paper

Fabrication of 721-pixel silicon lens array of an MKID camera

Kenji Mitsui, Tom Nitta, Norio Okada, Yutaro Sekímoto, Kenichi Karatsu, Shigeyuki Sekiguchi, Masakazu Sekine, Takashi Noguchi

Proceedings Volume 9153, 91532T (2014) https://doi.org/10.1117/12.2054846

KEYWORDS: Silicon, Antireflective coatings, Cameras, Photography, Epoxies, Spindles, Silicon carbide, Refractive index, Optical alignment, Astronomy

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Proceedings Article | 18 July 2014 Paper

Paper

Restraint deformation and corrosion protection of gold deposited aluminum mirrors for cold optics of mid-infrared instruments

Mizuho Uchiyama, Takashi Miyata, Shigeyuki Sako, Takafumi Kamizuka, Tomohiko Nakamura, Kentaro Asano, Kazushi Okada, Takashi Onaka, Itsuki Sakon, Hirokazu Kataza, Yuki Sarugaku, Okiharu Kirino, Hiroyuki Nakagawa, Norio Okada, Kenji Mitsui

Proceedings Volume 9151, 915143 (2014) https://doi.org/10.1117/12.2054917

KEYWORDS: Mirrors, Aluminum, Corrosion, Gold, Mid-IR, Temperature metrology, Reflectivity, Photovoltaics, Coating, Astronomy

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Proceedings Article | 26 September 2013 Paper

Paper

A design and trial production of the image slicer unit for the mid-infrared spectrograph

Itsuki Sakon, Hirokazu Kataza, Takashi Onaka, Naofumi Fujishiro, Yuji Ikeda, Hitoshi Tokoro, Hiroyuki Nakagawa, Okiharu Kirino, Kenji Mitsui, Norio Okada

Proceedings Volume 8860, 88600Z (2013) https://doi.org/10.1117/12.2024746

KEYWORDS: Mirrors, Spectrographs, Mid-IR, Aluminum, Infrared telescopes, Optical components, Infrared imaging, Infrared radiation, Radium, Product engineering

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Proceedings Article | 21 September 2012 Paper

Paper

Recent progress in the development of mid-infrared medium resolution spectrometer (MRS) installed in SPICA/MCS

Itsuki Sakon, Hirokazu Kataza, Takashi Onaka, Ryou Ohsawa, Yoko Okada, Yuji Ikeda, Naofumi Fujishiro, Kenji Mitsui, Norio Okada

Proceedings Volume 8442, 84423S (2012) https://doi.org/10.1117/12.926734

KEYWORDS: Mirrors, Spectroscopy, Beam splitters, Mid-IR, Optical design, Spectral resolution, Cryogenics, Detector arrays, Infrared telescopes, Astronomy

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Proceedings Article | 13 September 2012 Paper

Paper

Development of a slicer integral field unit for the existing optical imaging spectrograph FOCAS

Shinobu Ozaki, Yoko Tanaka, Takashi Hattori, Kenji Mitsui, Mitsuhiro Fukusima, Norio Okada, Yoshiyuki Obuchi, Satoshi Miyazaki, Takuya Yamashita

Proceedings Volume 8450, 84501L (2012) https://doi.org/10.1117/12.924959

KEYWORDS: Mirrors, Telescopes, Off axis mirrors, Vignetting, Spectrographs, Surface finishing, Prototyping, Reflectivity, Spherical lenses, Glasses

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Proceedings Article | 9 July 2008 Paper

Paper

Fabrication of slicer optics of mid-infrared spectrometer with an image slicer (MIRSIS) for ground-based astronomy

Kenji Mitsui, Norio Okada, Mitsuhiro Fukushima, Tetsuo Nishino, Yoshiko Kataza Okamoto, Hirokazu Kataza, Takashi Onaka

Proceedings Volume 7014, 701427 (2008) https://doi.org/10.1117/12.787724

KEYWORDS: Mirrors, Spectroscopy, Aluminum, Spherical lenses, Diamond, Mid-IR, Astronomy, Cutting equipment, Telescopes, Space telescopes

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Proceedings Article | 9 July 2008 Paper

Paper

Development of mid-infrared spectrometer with an image slicer (MIRSIS) for ground-based astronomy: developing optical and mechanical mounts

Yoshiko Kataza Okamoto, Hirokazu Kataza, Keigo Sato, Kei Manabe, Kenji Mitsui, Norio Okada, Mitsuhiro Fukushima, Tetsuo Nishino, Koji Tomita, Masamune Tosa, Takashi Onaka

Proceedings Volume 7014, 70142B (2008) https://doi.org/10.1117/12.788575

KEYWORDS: Mirrors, Spectroscopy, Optical components, Optical alignment, Telescopes, Astronomy, Sensors, Optical spheres, Mid-IR, Optics manufacturing

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Proceedings Article | 11 July 2006 Paper

Paper

Development of a test N-band image slicer: optical design

Yoshiko Kataza Okamoto, Hirokazu Kataza, Kenji Mitsui, Takashi Onaka

Proceedings Volume 6269, 62695F (2006) https://doi.org/10.1117/12.672959

KEYWORDS: Mirrors, Telescopes, Spectroscopy, Space telescopes, Sensors, Prototyping, Optical design, Imaging spectroscopy, Mid-IR, Cameras

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Showing 5 of 17 publications

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