Mr. Zong-Ru Yu Profile

Zong-Ru Yu

Associate Researcher at Taiwan Instrument Research Institute

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Author

Publications (21)

Proceedings Article | 2 March 2020 Paper

Modeling the influence function on a fused silica surface for CNC bonnet polishing process

Hao-Lun Chang, Yi-Jyun Lin, Wei-Ren Huang, Hong-Tsu Young, Zong-Ru Yu, Ching-Hsiang Kuo, Cheng-Fang Ho

Proceedings Volume 11287, 112871F (2020) https://doi.org/10.1117/12.2545726

KEYWORDS: Polishing, Silica, Surface finishing, 3D modeling, Process modeling, Superposition, Analytical research, Applied research

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Proceedings Article | 15 June 2018 Paper

The study of sub-surface damage of fused silica after ultrasonic assisted grinding process

Ching-Hsiang Kuo, Chien-Yao Huang, Zong-Ru Yu, Shyu-Cheng Shu, Keng-Shou Chang

Proceedings Volume 10692, 106921D (2018) https://doi.org/10.1117/12.2311911

KEYWORDS: Ultrasonics, Surface finishing, Aspheric lenses, Polishing, Silica, Glasses, Etching, Optical microscopes, Abrasives, Magnetorheological finishing

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Proceedings Article | 22 February 2018 Paper

Multiple-aperture optical design for micro-level cameras using 3D-printing method

Wei-Jei Peng, Wei-Yao Hsu, Yuan-Chieh Cheng, Wen-Lung Lin, Zong-Ru Yu, Hsiao-Yu Chou, Fong-Zhi Chen, Chien-Chung Fu, Chong-Syuan Wu, Chao-Tsung Huang

Proceedings Volume 10539, 1053919 (2018) https://doi.org/10.1117/12.2289445

KEYWORDS: Modulation transfer functions, Optical design, Lenses, Image sensors, CMOS sensors, Spatial resolution, Image resolution, Cameras, Lens design, Distortion

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Proceedings Article | 22 February 2018 Presentation + Paper

A portable non-contact displacement sensor and its application of lens centration error measurement

Zong-Ru Yu, Wei-Jei Peng, Jung-Hsing Wang, Po-Jui Chen, Hua-Lin Chen, Yi-Hao Lin, Chun-Cheng Chen, Wei-Yao Hsu, Fong-Zhi Chen

Proceedings Volume 10539, 1053917 (2018) https://doi.org/10.1117/12.2289375

KEYWORDS: Sensors, Laser sources

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Proceedings Article | 16 October 2017 Paper

The study of sub-surface damage distributions during grinding process on different abrasion materials

Ching-Hsiang Kuo, Chien-Yao Huang, Zong-Ru Yu, Shyu-Cheng Shu, Keng-Shou Chang, Wei-Yao Hsu

Proceedings Volume 10448, 1044823 (2017) https://doi.org/10.1117/12.2279673

KEYWORDS: Aspheric lenses, Polishing, Magnetorheological finishing, Glasses, Lens grinding

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Proceedings Article | 5 September 2017 Paper

The study of optimization on process parameters of high-accuracy computerized numerical control polishing

Wei-Ren Huang, Shih-Pu Huang, Tsung-Yueh Tsai, Yi-Jyun Lin, Zong-Ru Yu, Ching-Hsiang Kuo, Wei-Yao Hsu, Hong-Tsu Young

Proceedings Volume 10401, 104011B (2017) https://doi.org/10.1117/12.2272529

KEYWORDS: Polishing, Surface finishing, Optics manufacturing, Spherical lenses, Monochromatic aberrations, Aberration correction, Aspheric lenses, Optical components, Control systems, Head

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Proceedings Article | 23 August 2017 Presentation + Paper

Contact lens design with slope-constrained Q-type aspheres for myopia correction

Wei-Jei Peng, Yuan-Chieh Cheng, Wei-Yao Hsu, Zong-Ru Yu, Cheng-Fang Ho, Khaled Abou-El-Hossein

Proceedings Volume 10375, 103750T (2017) https://doi.org/10.1117/12.2273520

KEYWORDS: Aspheric lenses, Lens design, Visualization, Spherical lenses, Interferometers, Monochromatic aberrations, Eye models, Optical spheres, Contact lenses, Retina

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SPIE Journal Paper | 31 March 2017

Design, tolerance analysis, fabrication, and testing of a 6-in. dual-wavelength transmission sphere for a Fizeau interferometer

Wei-Jei Peng, Cheng-Fang Ho, Wen-Lung Lin, Zong-Ru Yu, Chien-Yao Huang, Ching-Hsiang Kuo, Wei-Yao Hsu

OE, Vol. 56, Issue 03, 035105, (March 2017) https://doi.org/10.1117/12.10.1117/1.OE.56.3.035105

KEYWORDS: Wavefronts, Photovoltaics, Tolerancing, Interferometers, Error analysis, Fizeau interferometers, Zemax, Optical design, Optical spheres, Optical engineering

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Proceedings Article | 27 September 2016 Paper

Mounting of reference surface for a transmission sphere

Wei-Jei Peng, Cheng-Fang Ho, Zong-Ru Yu, Chien-Yao Huang, Ching-Hsiang Kuo, Wei-Yao Hsu

Proceedings Volume 9684, 96840G (2016) https://doi.org/10.1117/12.2242360

KEYWORDS: Optical spheres, Wavefronts, Photovoltaics, Optical mounts, Surface finishing, Prototyping, Monochromatic aberrations, Calibration, Polishing, Optical testing

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Proceedings Article | 12 October 2015 Paper

Freeform correction polishing for optics with semi-kinematic mounting

Chien-Yao Huang, Ching-Hsiang Kuo, Wei-Jei Peng, Zong-Ru Yu, Cheng-Fang Ho, Ming-Ying Hsu, Wei-Yao Hsu

Proceedings Volume 9633, 963326 (2015) https://doi.org/10.1117/12.2195464

KEYWORDS: Polishing, Surface finishing, Magnetorheological finishing, Photovoltaics, Optical mounts, Kinematics, Directed self assembly, Glasses, Interferometers, Silica

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Proceedings Article | 11 October 2015 Paper

Optimization of sub-cells orientation for assembly of a high-quality transmission sphere

Wei-Jei Peng, Cheng-Fang Ho, Zong-Ru Yu, Chien-Yao Huang, Ching-Hsiang Kuo, Wei-Yao Hsu

Proceedings Volume 9633, 963315 (2015) https://doi.org/10.1117/12.2195468

KEYWORDS: Wavefronts, Tolerancing, Photovoltaics, Assembly tolerances, Optical spheres, Superposition, Imaging systems, Refractive index, Fizeau interferometers, Interferometers

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Proceedings Article | 3 September 2015 Paper

Design and tolerance analysis of a transmission sphere by interferometer model

Wei-Jei Peng, Cheng-Fong Ho, Wen-Lung Lin, Zong-Ru Yu, Chien-Yao Huang, Wei-Yao Hsu

Proceedings Volume 9582, 958208 (2015) https://doi.org/10.1117/12.2187759

KEYWORDS: Wavefronts, Optical spheres, Photovoltaics, Tolerancing, Interferometers, Zemax, Calibration, Prototyping, Error analysis, Assembly tolerances

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Proceedings Article | 25 September 2013 Paper

Freeform mirror polishing for compensation on non-symmetry system aberrations of remote sensing instrument

Ching-Hsiang Kuo, Zong-Ru Yu, Cheng-Fang Ho, Wei-Yao Hsu, Fong-Zhi Chen

Proceedings Volume 8841, 88410Z (2013) https://doi.org/10.1117/12.2023124

KEYWORDS: Polishing, Surface finishing, Aspheric lenses, Mirrors, Wavefronts, Telescopes, Optical spheres, Interferometers, Diamond turning, Remote sensing

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Proceedings Article | 7 September 2013 Paper

Freeform surface machining error compensation method for ultra-precision slow tool servo diamond turning

Chun-Chieh Chen, Chien-Yao Huang, Wei-Jei Peng, Yuan-Chieh Cheng, Zong-Ru Yu, Wei-Yao Hsu

Proceedings Volume 8838, 88380Y (2013) https://doi.org/10.1117/12.2022981

KEYWORDS: Servomechanisms, Diamond turning, Diamond, Error analysis, Spindles, Diamond machining, 3D modeling, Surface roughness, Freeform optics, Aspheric lenses

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Proceedings Article | 7 September 2013 Paper

The fast measurement of a mild asphere by the vibration-modulated sub-aperture stitching interferometer

Hung-Sheng Chang, Po-Chih Lin, Chao-Wen Liang, Yi-Chun Chen, Wei-Yao Hsu, Zong-Ru Yu

Proceedings Volume 8838, 88380C (2013) https://doi.org/10.1117/12.2023558

KEYWORDS: Aspheric lenses, Interferometers, Optical testing, Interferometry, Testing and analysis, Modulation, Phase measurement, Data acquisition, Phase shifting, Phase shifts

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Proceedings Article | 11 October 2012 Paper

Fabrication of ф160 mm convex hyperbolic mirror for remote sensing instrument

Ching-Hsiang Kuo, Zong-Ru Yu, Cheng-Fang Ho, Wei-Yao Hsu, Fong-Zhi Chen

Proceedings Volume 8486, 848615 (2012) https://doi.org/10.1117/12.928349

KEYWORDS: Polishing, Surface finishing, Mirrors, Aspheric lenses, Computer generated holography, Photovoltaics, Aspheric optics, Inspection, Spherical lenses, Interferometers

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In this study, efficient polishing processes with inspection procedures for a large convex hyperbolic mirror of Cassegrain optical system are presented. The polishing process combines the techniques of conventional lapping and CNC polishing. We apply the conventional spherical lapping process to quickly remove the sub-surface damage (SSD) layer caused by grinding process and to get the accurate radius of best-fit sphere (BFS) of aspheric surface with fine surface texture simultaneously. Thus the removed material for aspherization process can be minimized and the polishing time for SSD removal can also be reduced substantially. The inspection procedure was carried out by using phase shift interferometer with CGH and stitching technique. To acquire the real surface form error of each sub aperture, the wavefront errors of the reference flat and CGH flat due to gravity effect of the vertical setup are calibrated in advance. Subsequently, we stitch 10 calibrated sub-aperture surface form errors to establish the whole irregularity of the mirror in 160 mm diameter for correction polishing. The final result of the In this study, efficient polishing processes with inspection procedures for a large convex hyperbolic mirror of Cassegrain optical system are presented. The polishing process combines the techniques of conventional lapping and CNC polishing. We apply the conventional spherical lapping process to quickly remove the sub-surface damage (SSD) layer caused by grinding process and to get the accurate radius of best-fit sphere (BFS) of aspheric surface with fine surface texture simultaneously. Thus the removed material for aspherization process can be minimized and the polishing time for SSD removal can also be reduced substantially. The inspection procedure was carried out by using phase shift interferometer with CGH and stitching technique. To acquire the real surface form error of each sub aperture, the wavefront errors of the reference flat and CGH flat due to gravity effect of the vertical setup are calibrated in advance. Subsequently, we stitch 10 calibrated sub-aperture surface form errors to establish the whole irregularity of the mirror in 160 mm diameter for correction polishing. The final result of the Fabrication of ф160 mm Convex Hyperbolic Mirror for Remote Sensing Instrument160 mm convex hyperbolic mirror is 0.15 μm PV and 17.9 nm RMS.160 mm convex hyperbolic mirror is 0.15 μm PV and 17.9 nm RMS.

Proceedings Article | 11 October 2012 Paper

Study on measurement of 160 mm convex hyperbolic mirror for Cassegrain reflecting system

Cheng-Fang Ho, Zong-Ru Yu, Ching-Hsiang Kuo, Wei-Yao Hsu

Proceedings Volume 8486, 84860Q (2012) https://doi.org/10.1117/12.928353

KEYWORDS: Computer generated holography, Wavefronts, Polishing, Surface finishing, Mirrors, Aspheric lenses, Interferometers, Photovoltaics, Metrology, Calibration

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Proceedings Article | 11 October 2012 Paper

Parameter investigation of air-driving fluid jet polishing

Zong-Ru Yu, Wei-Yao Hsu, Loc Huu Pham, Cheng-Fang Ho, Ching-Hsiang Kuo, Fang-Jung Shiou

Proceedings Volume 8486, 84860L (2012) https://doi.org/10.1117/12.927995

KEYWORDS: Polishing, Silica, Surface roughness, Abrasives, Surface finishing, Fluid dynamics, Glasses, Radium, Applied research, Zerodur

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Proceedings Article | 11 October 2012 Paper

Design and development of bi-directional viewer

Zong-Ru Yu, Cheng-Fang Ho, Annie Liu, Tai-Wen Lee, Wen-Lung Lin, Wei-Yao Hsu

Proceedings Volume 8486, 848613 (2012) https://doi.org/10.1117/12.928062

KEYWORDS: Mirrors, Modulation transfer functions, Video, Optomechanical design, Spatial frequencies, Image quality, Computer aided design, Optical design, Image sensors, Optical fabrication

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Proceedings Article | 27 September 2011 Paper

Study of air-driving fluid jet polishing

Zong-Ru Yu, Ching-Hsiang Kuo, Chun-Cheng Chen, Wei-Yao Hsu, Din Ping Tsai

Proceedings Volume 8126, 812611 (2011) https://doi.org/10.1117/12.892140

KEYWORDS: Polishing, Surface finishing, Abrasives, Head, Applied research, Space mirrors, Mirrors, Materials processing, Photography, Physics

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Proceedings Article | 20 August 2010 Paper

The design and fabrication of telecentric lens with large field of view

Chun-Li Chang, Kuo-Cheng Huang, Wen-Hong Wu, Yi-Hung Lin

Proceedings Volume 7786, 778612 (2010) https://doi.org/10.1117/12.860394

KEYWORDS: Lens design, Distortion, Tolerancing, Inspection, Aspheric lenses, Modulation transfer functions, Optical design, Sensors, Optics manufacturing, CCD image sensors

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Showing 5 of 21 publications

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