Prof. Cheng-Hao Ko Profile

Prof. Cheng-Hao Ko

Professor at National Taiwan Univ of Science & Technology

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Author

Publications (12)

Proceedings Article | 28 February 2020 Paper

A beam modulation in the multilayer parabolic bio-nanostructures of the eye of the firefly

Cheng-Hao Ko, KueiJen Lee

Proceedings Volume 11277, 1127714 (2020) https://doi.org/10.1117/12.2539627

KEYWORDS: Eye, Crystals, Receptors, Cones, Superposition, Geometrical optics, Multilayers, Ray tracing, Refractive index, Collimation

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Proceedings Article | 13 May 2019 Presentation + Paper

MEMS based SpectroChip for healthcare, food safety and blockchain applications

Cheng-Hao (Kevin) Ko, Chitsung Hong, Wei-Huai Chiu

Proceedings Volume 10983, 1098303 (2019) https://doi.org/10.1117/12.2519807

KEYWORDS: Image sensors, Spectral resolution, Microelectromechanical systems, Medicine, Safety, Diffraction, Spectroscopy, Signal to noise ratio, Stray light, Diffraction gratings

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Proceedings Article | 17 September 2018 Presentation

MEMS SpectroChip in visible and near-infrared range for home healthcare, food safety, and blockchain applications

Cheng-Hao Ko

Proceedings Volume 10746, 1074609 (2018) https://doi.org/10.1117/12.2322054

KEYWORDS: Medicine, Microelectromechanical systems, Visible radiation, Near infrared, Safety, Spectral resolution, Diffraction, Signal to noise ratio, Stray light, Sensors

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Proceedings Article | 17 September 2018 Presentation

The hyperspectral imaging achieved by aberration-corrected freeform concave blaze grating with variable line spacing

Cheng-Hao Ko, Jih-Run Tsai, Bang-Ji Wang, Shin-Fa Lin, Chitsung Hong, Wei-Huai Chiu

Proceedings Volume 10746, 1074605 (2018) https://doi.org/10.1117/12.2322052

KEYWORDS: Hyperspectral imaging, Optical design, Diffraction gratings, Imaging systems, Image sensors, Spectroscopy, Spectral resolution, Diffraction

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Proceedings Article | 17 September 2018 Presentation

Visible and near-IR range linear variable filter with two-dimensional modeling

Cheng-Hao (Kevin) Ko, Jih-Run Tsai, Bang-Ji Wang, Shin-Fa Lin, Chi-Tsung Hong, Wei-Huai Chiu

Proceedings Volume 10746, 1074607 (2018) https://doi.org/10.1117/12.2322049

KEYWORDS: Medicine, Microelectromechanical systems, Visible radiation, Near infrared, Safety, Spectral resolution, Diffraction, Signal to noise ratio, Stray light, Sensors

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Proceedings Article | 9 June 2017 Presentation

Design and verification of an aberration-corrected free-form concave blaze grating with variable line spacing for hyperspectral imaging (Conference Presentation)

Cheng-Hao Ko, Bang-Ji Wang, Jih-Run Tsai, Yueh-Hsun Wu, Sheng-Yu Tsai, Shin-Fa Lin, Chiu-Der Hsiao

Proceedings Volume 10213, 1021307 (2017) https://doi.org/10.1117/12.2261647

KEYWORDS: Diffraction gratings, Optical design, Hyperspectral imaging, Spectral resolution, Diffraction, Spatial resolution, Imaging systems, Sensors, Image sensors, Current controlled current source

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Proceedings Article | 31 October 2016 Paper

Design and verification of a flat-field aberration-corrected concave blaze grating for hyperspectral imaging

Cheng-Hao Ko, Sheng-Yu Tsai, Yueh-Hsun Wu, Chi-Tsung Hong, Jih-Run Tsai, Bang-Ji Wang, Chiu-Der Hsiao

Proceedings Volume 10021, 100210M (2016) https://doi.org/10.1117/12.2245302

KEYWORDS: Diffraction gratings, Optical design, Hyperspectral imaging, Diffraction, Spectral resolution, Sensors, Spectroscopy, Image sensors, Process control, Remote sensing

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Proceedings Article | 31 October 2016 Paper

Two-dimensional analytical modeling of a linear variable filter for spectral order sorting

Cheng-Hao Ko, Yueh-Hsun Wu, Symphony Chakraborty, Sheng-Yu Tsai, Chi-Tsung Hong, Bang-Ji Wang, Jih-Run Tsai, Chiu-Der Hsiao

Proceedings Volume 10021, 100210I (2016) https://doi.org/10.1117/12.2245288

KEYWORDS: Thin films, Optical filters, Linear filtering, Thin film deposition, Mathematical modeling, Coating, Spectrometers, Tolerancing, 3D modeling, Photomasks

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Proceedings Article | 17 December 2014 Paper

Generalized aberration reduction procedure of a concave grating for hyperspectral imaging

Cheng-Hao Ko, Chia-Hui Tang, Jih-Run Tsai, Bang-Ji Wang

Proceedings Volume 9293, 92930F (2014) https://doi.org/10.1117/12.2073260

KEYWORDS: Sensors, Spectroscopy, Hyperspectral imaging, Spectral resolution, Optical design, Diffraction gratings, Yield improvement, Image sensors, Performance modeling, Mid-IR

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SPIE Journal Paper | 1 August 2011

Design and fabrication of a microspectrometer based on silicon concave micrograting

Cheng-Hao Ko, Min-Fan Lee

OE, Vol. 50, Issue 08, 084401, (August 2011) https://doi.org/10.1117/12.10.1117/1.3613942

KEYWORDS: Spectroscopy, Image sensors, Spectral resolution, Diffraction gratings, Light emitting diodes, CMOS sensors, Silicon, Sensors, Surface roughness, Optical design

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SPIE Journal Paper | 1 January 2010

Analysis of the focal pattern distortion of a cylindrical concave micro-grating in a slab waveguide and the mechanism of spatial resolution recovery

Cheng Ko, Jian-Shian Lin, Nien-Po Chen, Chang-Tai Chen, Ji-Lin Shen

OE, Vol. 49, Issue 01, 018001, (January 2010) https://doi.org/10.1117/12.10.1117/1.3290241

KEYWORDS: Waveguides, Sensors, Image sensors, Distortion, Spectroscopy, Spectral resolution, Diffraction, Diffraction gratings, Video, Optical engineering

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SPIE Journal Paper | 1 April 2007

Micrograting fabricated by deep x-ray lithography for optical communications

Cheng Ko, Bor-Yuan Shew, Shih-Che Hsu

OE, Vol. 46, Issue 04, 048001, (April 2007) https://doi.org/10.1117/12.10.1117/1.2719709

KEYWORDS: Diffraction gratings, Diffraction, Spectroscopy, X-ray lithography, Spectral resolution, Photomasks, X-rays, Optical communications, Waveguides, Optical fibers

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Showing 5 of 12 publications

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