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Proceedings Paper

Design evaluation of the tilt mirror and groove feature for flat thermal image of the blackbody unit
Author(s): Jinsuk Hong; Pil Gyeong Choi; Munshin Jo; Kyoungmuk Lee; Jeeyeon Yoon; Dai Ho Ko; Eung-shik Lee
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Paper Abstract

The BlackBody Unit (BBU) mounted in front of the IR optical system is located off the optical path to avoid any thermal noise induced by the unit. To perform a thermal calibration of the optical system, a mirror is inserted in the optical path to refract the optical path toward the BBU during the calibration mode. To maximize the performance of the BBU, it is required to fill the Focal Plane Array (FPA) with the thermal irradiance as even as possible. To verify the performance of the BBU during the calibration mode, a ray tracing is performed. As a result, it is confirmed the uniformity of the thermal signal to be smaller than 0.01K when the BBU has the thermal distribution of 1K.

Paper Details

Date Published: 18 November 2019
PDF: 7 pages
Proc. SPIE 11196, Infrared, Millimeter-Wave, and Terahertz Technologies VI, 1119610 (18 November 2019); doi: 10.1117/12.2537084
Show Author Affiliations
Jinsuk Hong, Hanwha Systems Co. (Korea, Republic of)
Yonsei Univ. (Korea, Republic of)
Pil Gyeong Choi, Hanwha Systems Co. (Korea, Republic of)
Munshin Jo, Hanwha Systems Co. (Korea, Republic of)
Kyoungmuk Lee, Hanwha Systems Co. (Korea, Republic of)
Jeeyeon Yoon, KARI (Korea, Republic of)
Dai Ho Ko, KARI (Korea, Republic of)
Eung-shik Lee, KARI (Korea, Republic of)


Published in SPIE Proceedings Vol. 11196:
Infrared, Millimeter-Wave, and Terahertz Technologies VI
Cunlin Zhang; Xi-Cheng Zhang; Masahiko Tani, Editor(s)

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