Prof. Seunghyuk Chang Profile

Prof. Seunghyuk Chang

Research Professor at Ctr for Integrated Smart Sensors

SPIE Involvement:

Author

Publications (19)

Proceedings Article | 1 October 2024 Poster + Paper

Development of linear astigmatism free confocal off-axis reflective collimator for automatic alignment device for aviation

Daehan Jung, Dohoon Kim, Jimin Han, Seunghyuk Chang, Sanghyun Nam, Moonkyung Kim, Sunglyoung Hwang, Soojong Pak

Proceedings Volume 13130, 131300F (2024) https://doi.org/10.1117/12.3026644

KEYWORDS: Collimators, Simulations, Tolerancing, Stray light, Mirrors, Sensors, Confocal microscopy, Stray light analysis, Optomechanical design, Error analysis

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Proceedings Article | 30 September 2024 Presentation + Paper

Integration of off-axis freeform mirrors KASI deep rolling imaging fast telescope generation 1

Yunjong Kim, Dohoon Kim, Seunghyuk Chang, Jihun Kim, Il Kweon Moon, Hyukson Kwon, Woowon Byun, Yongseok Lee, Changhee Lee, Kyohoon Ahn, Yeonsik Kim, Gayoung Lee, Daewook Kim, Jongwan Ko

Proceedings Volume 13134, 131340C (2024) https://doi.org/10.1117/12.3028442

KEYWORDS: Mirrors, Telescopes, Tolerancing, Off axis mirrors, Optical design, Assembly tolerances, Wavefront errors, Mirror surfaces, Freeform optics, Confocal microscopy

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Proceedings Article | 26 August 2024 Poster

Integration of freeform three-mirror KASI deep-rolling-imaging fast telescope

Yunjong Kim, Dohoon Kim, Changhee Lee, Seunghyuk Chang, Jihun Kim, Il Kweon Moon, Hyukson Kwon, Woowon Byun, Yongseok Lee, Yeonsik Kim, Daewook Kim, Jongwan Ko

Proceedings Volume 13100, 131004D (2024) https://doi.org/10.1117/12.3019659

Proceedings Article | 15 May 2024 Paper

Optical design of a mode matching telescope for quantum-entangled beams in an EPR squeezer

Hojae Ahn, Seunghyuk Chang, Sumin Lee, Soojong Pak, Chang-Hee Kim, Yunjong Kim, Sungho Lee, Sibilla di Pace, Valeria Sequino, Martina de Laurentis, Francesco de Marco, Fiodor Sorrentino

Proceedings Volume 12798, 1279835 (2024) https://doi.org/10.1117/12.2692566

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Proceedings Article | 13 May 2024 Paper

Optical design and PhoSim simulation of a three-mirror freeform telescope for the MESSIER surveyor mission

Changgon Kim, Seunghyuk Chang, Dohun Kim, Sunwoo Lee, Jimin Han, Woojin Park, Daewook Kim, John Peterson, Dae-Hee Lee, David Valls-Gabaud, Soojong Pak

Proceedings Volume 12798, 127980O (2024) https://doi.org/10.1117/12.2691628

KEYWORDS: Telescopes, Point spread functions, Optical design, Device simulation, Monte Carlo methods, Scattering, Optical surfaces, Freeform optics, Reflection, Optics manufacturing

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Proceedings Article | 4 October 2023 Poster + Paper

Tolerance analysis of off-axis freeform three-mirror KASI-deep rolling imaging fast telescope

Yunjong Kim, Gayoung Lee, Jihun Kim, Seunghyuk Chang, Dohoon Kim, Il Kweon Moon, Daewook Kim, Jongwan Ko

Proceedings Volume 12677, 126770O (2023) https://doi.org/10.1117/12.2674544

KEYWORDS: Tolerancing, Mirrors, Telescopes, Monte Carlo methods, Optical design, Monochromatic aberrations, Mirror surfaces, Astronomical imaging, Wavefront errors

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Proceedings Article | 4 October 2023 Poster + Paper

Low-to-mid spatial frequency wavefront error control for off-axis freeform three-mirror KASI-deep rolling imaging fast telescope

Gayoung Lee, Yunjong Kim, Daewook Kim, Woowon Byun, Changsu Choi, Yongseok Lee, Dohoon Kim, Seunghyuk Chang, Jongwan Ko

Proceedings Volume 12677, 126770P (2023) https://doi.org/10.1117/12.2676309

KEYWORDS: Point spread functions, Wavefront errors, Mirrors, Error analysis, Error control coding, Telescopes, Spatial frequencies, Fabrication, Device simulation, Optical mounts

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Proceedings Article | 14 June 2023 Presentation + Paper

Wide-wide linear astigmatism free-three mirror system (LAF-TMS) enabling wide field-of-view and spectral bandwidth detection

Changgon Kim, Dohoon Kim, Jimin Han, Seunghyuk Chang, Woojin Park, Daewook Kim, Jun Ho Lee, John Peterson, Dae-Hee Lee, Soojong Pak

Proceedings Volume 12530, 125300A (2023) https://doi.org/10.1117/12.2663309

KEYWORDS: Design and modelling, Point spread functions, Unmanned aerial vehicles, Monochromatic aberrations, Mirrors, Tunable filters, Optical design, Image filtering, Atmospheric optics, UAV imaging systems

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Proceedings Article | 26 August 2022 Poster + Paper

Integration and alignment of KASI-deep rolling imaging fast-optics telescope (K-DRIFT) pathfinder for the detection of low surface brightness features: 300 mm off-axis freeform three-mirror system

Yunjong Kim, Dohoon Kim, Seunghyuk Chang, Woowon Byun, Yongseok Lee, Changsu Choi, Chung-Uk Lee, Eon-Chang Sung, Jaewon Yoo, Jae-Woo Kim, Kwang-Il Seon, Sang-Hyun Chun, Young-Beom Jeon, Gayoung Lee, Hyungkwon Lee, Jongwan Ko

Proceedings Volume 12182, 121822F (2022) https://doi.org/10.1117/12.2628847

KEYWORDS: Mirrors, Monochromatic aberrations, Wavefronts, Telescopes, Imaging systems, Optical design, Off axis mirrors, Tolerancing, Confocal microscopy, Zerodur

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Proceedings Article | 13 December 2020 Poster + Paper

Optical sensitivity analyses of various reflective systems: on-axis, common off-axis, and confocal off-axis designs

Woojin Park, Soojong Pak, Seunghyuk Chang, Hanshin Lee, Sunwoo Lee, Dae Wook Kim

Proceedings Volume 11451, 114513X (2020) https://doi.org/10.1117/12.2559340

KEYWORDS: Confocal microscopy, Reflectivity, Active optics, Tolerancing, Optical design, Telescopes, Statistical analysis, Monochromatic aberrations, Off axis mirrors, Mirrors

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Proceedings Article | 20 September 2020 Poster + Presentation + Paper

Tolerance analysis of wide field of view confocal off-axis telescope system using freeform mirrors for common optics MWIR/LWIR sensors onboard UAVs: linear astigmatism free three mirror system D70F1.4

Jimin Han, Woojin Park, Seunghyuk Chang, Sunwoo Lee, Hojae Ahn, Dae Wook Kim, Geon Hee Kim, Dae-Hee Lee, Hanshin Lee, Soojong Pak

Proceedings Volume 11537, 115370R (2020) https://doi.org/10.1117/12.2573698

KEYWORDS: Tolerancing, Mirrors, Off axis mirrors, Telescopes, Monochromatic aberrations, Confocal microscopy, Sensors, Freeform optics, Unmanned aerial vehicles, Infrared telescopes

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Proceedings Article | 9 September 2019 Paper

Effects of light intensity on disparity for depth extraction in monochrome CMOS image sensor with offset pixel apertures

Jimin Lee, Sang-Hwan Kim, Seunghyuk Chang, JongHo Park, Sang-Jin Lee, Jang-Kyoo Shin

Proceedings Volume 11105, 111051J (2019) https://doi.org/10.1117/12.2535632

KEYWORDS: CMOS sensors, Sensors, Optical filters, 3D image processing, Image sensors, Light sources, Cameras, Environmental sensing, Smart sensors, Image processing

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Proceedings Article | 13 May 2019 Paper

CMOS image sensor with off-center circular apertures for depth extraction

Byoung-Soo Choi, Jimin Lee, Sang-Hwan Kim, Jewon Lee, Junwoo Lee, Seunghyuk Chang, JongHo Park, Sang-Jin Lee, Jang-Kyoo Shin

Proceedings Volume 10980, 1098011 (2019) https://doi.org/10.1117/12.2518802

KEYWORDS: CMOS sensors, Image processing, 3D image processing, Cameras, Light sources, Photodiodes, Active sensors, Sensors, 3D metrology, Smart sensors

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Proceedings Article | 17 September 2018 Paper

Effects of aperture size on the performance of CMOS image sensor with pixel aperture for depth extraction

Byoung-Soo Choi, Sang-Hwan Kim, Jimin Lee, Donghyun Seong, Seunghyuk Chang, JongHo Park, Sang-Jin Lee, Jang-Kyoo Shin

Proceedings Volume 10746, 107460P (2018) https://doi.org/10.1117/12.2500229

KEYWORDS: CMOS sensors, Sensors, Active sensors, Cameras

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Proceedings Article | 24 August 2017 Paper

CMOS image sensor for extracting depth information using offset pixel aperture technique

Byoung-Soo Choi, Myunghan Bae, Sang-Hwan Kim, Jimin Lee, Chang-Woo Oh, Seunghyuk Chang, JongHo Park, Sang-Jin Lee, Jang-Kyoo Shin

Proceedings Volume 10376, 103760Y (2017) https://doi.org/10.1117/12.2280000

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Proceedings Article | 20 February 2017 Paper

Extraction of depth information for 3D imaging using pixel aperture technique

Byoung-Soo Choi, Myunghan Bae, Sang-Hwan Kim, Jimin Lee, Chang-Woo Oh, Seunghyuk Chang, JongHo Park, Sang-Jin Lee, Jang-Kyoo Shin

Proceedings Volume 10110, 101101S (2017) https://doi.org/10.1117/12.2269081

KEYWORDS: Stereoscopy, Cameras, Image sensors, Active sensors, CMOS sensors, Sensors, Imaging systems, RGB color model, Image processing, Finite-difference time-domain method, Metals, Optical simulations, Photodiodes, Microlens, Optical filters

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Proceedings Article | 29 September 2016 Paper

Compact wide-field off-axis two-mirror system with field corrector

Seunghyuk Chang

Proceedings Volume 9948, 99481B (2016) https://doi.org/10.1117/12.2238308

KEYWORDS: Monochromatic aberrations, Mirrors, Off axis mirrors, Telescopes, Space telescopes, Modulation transfer functions, Confocal microscopy, Smart sensors, Diffraction, Spatial frequencies

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Proceedings Article | 26 September 2013 Paper

Elimination of linear astigmatism in off-axis three-mirror telescope and its applications

Seunghyuk Chang

Proceedings Volume 8860, 88600U (2013) https://doi.org/10.1117/12.2023433

KEYWORDS: Telescopes, Mirrors, Monochromatic aberrations, Relays, Optical instrument design, Off axis mirrors, Reflector telescopes, Optical design, Imaging systems, Reflectivity

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Proceedings Article | 16 June 2006 Paper

Off-axis reflecting telescope with axially-symmetric optical property and its applications

Seunghyuk Chang

Proceedings Volume 6265, 626548 (2006) https://doi.org/10.1117/12.672695

KEYWORDS: Telescopes, Mirrors, Space telescopes, Monochromatic aberrations, Off axis mirrors, Optical instrument design, Reflector telescopes, Optical properties, Active optics, Aberration theory

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Showing 5 of 19 publications

Conference Committee Involvement (3)

Astronomical Optics: Design, Manufacture, and Test of Space and Ground Systems V

3 August 2025 | San Diego, California, United States

Astronomical Optics: Design, Manufacture, and Test of Space and Ground Systems IV

21 August 2023 | San Diego, California, United States

Astronomical Optics: Design, Manufacture, and Test of Space and Ground Systems III

4 August 2021 | San Diego, California, United States

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