The optical design and physical optics analysis of a cross-Dragonian telescope for LiteBIRD

Hiroaki Imada; Tadayasu Dotani; Takashi Hasebe; Masashi Hazumi; Junji Inatani; Hirokazu Ishino; Shingo Kashima; Nobuhiko Katayama; Kimihiro Kimura; Tomotake Matsumura; Ryo Nagata; Yutaro Sekimoto; Hajime Sugai; Aritoki Suzuki; Shin Utsunomiya

doi:10.1117/12.2312185

The optical design and physical optics analysis of a cross-Dragonian telescope for LiteBIRD

Hiroaki Imada, Tadayasu Dotani, Takashi Hasebe, Masashi Hazumi, Junji Inatani, Hirokazu Ishino, Shingo Kashima, Nobuhiko Katayama, Kimihiro Kimura, Tomotake Matsumura, Ryo Nagata, Yutaro Sekimoto, Hajime Sugai, Aritoki Suzuki, Shin Utsunomiya

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

11 Citations (Scopus)

Abstract

The Lite satellite for the studies of B-mode polarization and Inflation from the cosmic microwave background (CMB) Radiation Detection (LiteBIRD) is a next generation CMB satellite dedicated to probing the inflationary universe. It has two telescopes, Low Frequency Telescope (LFT) and High Frequency Telescope (HFT) to cover wide observational bands from 34 GHz to 448 GHz. In this presentation, we report the optical design and characterization of the LFT. We have used the CODE-V to obtain the LFT optical design based on a cross- Dragonian telescope. It is an image-space telecentric system with an F number of 3.5 and 20 x 10 degrees² field of view. The main, near and far side lobes at far-field have been calculated by using a combination of HFSS and GRASP 10. It is revealed that the LFT telescope has good main lobe properties to satisfy the requirements. On the other hand, the side lobes are affected by the stray light that stems from the triple reflection and the direct path from feed. In order to avoid the stray light, the way to block these paths is now under study.

Original language	English
Title of host publication	Space Telescopes and Instrumentation 2018
Subtitle of host publication	Optical, Infrared, and Millimeter Wave
Editors	Giovanni G. Fazio, Howard A. MacEwen, Makenzie Lystrup
Publisher	SPIE
ISBN (Print)	9781510619494
DOIs	https://doi.org/10.1117/12.2312185
Publication status	Published - 2018
Externally published	Yes
Event	Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave - Austin, United States Duration: Jun 10 2018 → Jun 15 2018

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	10698
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Other

Other	Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave
Country/Territory	United States
City	Austin
Period	6/10/18 → 6/15/18

Keywords

CMB space mission
Physical optics
Ray tracing
Wide field of view telescope

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.2312185

Cite this

Imada, H., Dotani, T., Hasebe, T., Hazumi, M., Inatani, J., Ishino, H., Kashima, S., Katayama, N., Kimura, K., Matsumura, T., Nagata, R., Sekimoto, Y., Sugai, H., Suzuki, A., & Utsunomiya, S. (2018). The optical design and physical optics analysis of a cross-Dragonian telescope for LiteBIRD. In G. G. Fazio, H. A. MacEwen, & M. Lystrup (Eds.), Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave Article 106984K (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10698). SPIE. https://doi.org/10.1117/12.2312185

The optical design and physical optics analysis of a cross-Dragonian telescope for LiteBIRD. / Imada, Hiroaki; Dotani, Tadayasu; Hasebe, Takashi et al.
Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave. ed. / Giovanni G. Fazio; Howard A. MacEwen; Makenzie Lystrup. SPIE, 2018. 106984K (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10698).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Imada, H, Dotani, T, Hasebe, T, Hazumi, M, Inatani, J, Ishino, H, Kashima, S, Katayama, N, Kimura, K, Matsumura, T, Nagata, R, Sekimoto, Y, Sugai, H, Suzuki, A & Utsunomiya, S 2018, The optical design and physical optics analysis of a cross-Dragonian telescope for LiteBIRD. in GG Fazio, HA MacEwen & M Lystrup (eds), Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave., 106984K, Proceedings of SPIE - The International Society for Optical Engineering, vol. 10698, SPIE, Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave, Austin, United States, 6/10/18. https://doi.org/10.1117/12.2312185

Imada H, Dotani T, Hasebe T, Hazumi M, Inatani J, Ishino H et al. The optical design and physical optics analysis of a cross-Dragonian telescope for LiteBIRD. In Fazio GG, MacEwen HA, Lystrup M, editors, Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave. SPIE. 2018. 106984K. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.2312185

Imada, Hiroaki ; Dotani, Tadayasu ; Hasebe, Takashi et al. / The optical design and physical optics analysis of a cross-Dragonian telescope for LiteBIRD. Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave. editor / Giovanni G. Fazio ; Howard A. MacEwen ; Makenzie Lystrup. SPIE, 2018. (Proceedings of SPIE - The International Society for Optical Engineering).

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title = "The optical design and physical optics analysis of a cross-Dragonian telescope for LiteBIRD",

abstract = "The Lite satellite for the studies of B-mode polarization and Inflation from the cosmic microwave background (CMB) Radiation Detection (LiteBIRD) is a next generation CMB satellite dedicated to probing the inflationary universe. It has two telescopes, Low Frequency Telescope (LFT) and High Frequency Telescope (HFT) to cover wide observational bands from 34 GHz to 448 GHz. In this presentation, we report the optical design and characterization of the LFT. We have used the CODE-V to obtain the LFT optical design based on a cross- Dragonian telescope. It is an image-space telecentric system with an F number of 3.5 and 20 x 10 degrees2 field of view. The main, near and far side lobes at far-field have been calculated by using a combination of HFSS and GRASP 10. It is revealed that the LFT telescope has good main lobe properties to satisfy the requirements. On the other hand, the side lobes are affected by the stray light that stems from the triple reflection and the direct path from feed. In order to avoid the stray light, the way to block these paths is now under study.",

keywords = "CMB space mission, Physical optics, Ray tracing, Wide field of view telescope",

author = "Hiroaki Imada and Tadayasu Dotani and Takashi Hasebe and Masashi Hazumi and Junji Inatani and Hirokazu Ishino and Shingo Kashima and Nobuhiko Katayama and Kimihiro Kimura and Tomotake Matsumura and Ryo Nagata and Yutaro Sekimoto and Hajime Sugai and Aritoki Suzuki and Shin Utsunomiya",

note = "Funding Information: This work was supported by the ISAS/JAXA Phase-A1 program and acceleration program of JAXA research and development directorate, by MEXT KAKENHI Grant Number JP15H05891 and JP17H01115, by World Premier International Research Center Initiative, MEXT, and by the JSPS Core-to-Core program. Publisher Copyright: {\textcopyright} COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.; Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave ; Conference date: 10-06-2018 Through 15-06-2018",

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AU - Imada, Hiroaki

AU - Dotani, Tadayasu

AU - Hasebe, Takashi

AU - Hazumi, Masashi

AU - Inatani, Junji

AU - Ishino, Hirokazu

AU - Kashima, Shingo

AU - Katayama, Nobuhiko

AU - Kimura, Kimihiro

AU - Matsumura, Tomotake

AU - Nagata, Ryo

AU - Sekimoto, Yutaro

AU - Sugai, Hajime

AU - Suzuki, Aritoki

AU - Utsunomiya, Shin

N1 - Funding Information: This work was supported by the ISAS/JAXA Phase-A1 program and acceleration program of JAXA research and development directorate, by MEXT KAKENHI Grant Number JP15H05891 and JP17H01115, by World Premier International Research Center Initiative, MEXT, and by the JSPS Core-to-Core program. Publisher Copyright: © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

PY - 2018

Y1 - 2018

N2 - The Lite satellite for the studies of B-mode polarization and Inflation from the cosmic microwave background (CMB) Radiation Detection (LiteBIRD) is a next generation CMB satellite dedicated to probing the inflationary universe. It has two telescopes, Low Frequency Telescope (LFT) and High Frequency Telescope (HFT) to cover wide observational bands from 34 GHz to 448 GHz. In this presentation, we report the optical design and characterization of the LFT. We have used the CODE-V to obtain the LFT optical design based on a cross- Dragonian telescope. It is an image-space telecentric system with an F number of 3.5 and 20 x 10 degrees2 field of view. The main, near and far side lobes at far-field have been calculated by using a combination of HFSS and GRASP 10. It is revealed that the LFT telescope has good main lobe properties to satisfy the requirements. On the other hand, the side lobes are affected by the stray light that stems from the triple reflection and the direct path from feed. In order to avoid the stray light, the way to block these paths is now under study.

AB - The Lite satellite for the studies of B-mode polarization and Inflation from the cosmic microwave background (CMB) Radiation Detection (LiteBIRD) is a next generation CMB satellite dedicated to probing the inflationary universe. It has two telescopes, Low Frequency Telescope (LFT) and High Frequency Telescope (HFT) to cover wide observational bands from 34 GHz to 448 GHz. In this presentation, we report the optical design and characterization of the LFT. We have used the CODE-V to obtain the LFT optical design based on a cross- Dragonian telescope. It is an image-space telecentric system with an F number of 3.5 and 20 x 10 degrees2 field of view. The main, near and far side lobes at far-field have been calculated by using a combination of HFSS and GRASP 10. It is revealed that the LFT telescope has good main lobe properties to satisfy the requirements. On the other hand, the side lobes are affected by the stray light that stems from the triple reflection and the direct path from feed. In order to avoid the stray light, the way to block these paths is now under study.

KW - CMB space mission

KW - Physical optics

KW - Ray tracing

KW - Wide field of view telescope

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Y2 - 10 June 2018 through 15 June 2018

ER -

The optical design and physical optics analysis of a cross-Dragonian telescope for LiteBIRD

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