Prof. Seunghyuk Chang Profile

Prof. Seunghyuk Chang

Research Professor at Ctr for Integrated Smart Sensors

SPIE Involvement:

Author

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

Read Abstract +

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

Read Abstract +

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

Read Abstract +

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

Read Abstract +

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

Read Abstract +

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

Read Abstract +

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

Read Abstract +

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

Read Abstract +

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

Read Abstract +

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

Read Abstract +

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

Read Abstract +

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

Read Abstract +

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

Read Abstract +

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

Read Abstract +

Showing 5 of 14 publications

Conference Committee Involvement (2)

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

Keywords/Phrases

Search In:

Publication Years