Dr. Weiqiang Zhao Profile

Dr. Weiqiang Zhao

at National Institute of Metrology

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Author

Publications (10)

Proceedings Article | 19 December 2022 Poster + Presentation + Paper

Photon flux calibration of LED in horticulture lighting

Jinyun Yan, Hui Liu, Weiqiang Zhao, Ying Su

Proceedings Volume 12319, 1231919 (2022) https://doi.org/10.1117/12.2642847

KEYWORDS: Light emitting diodes, Calibration, LED lighting, Light sources and illumination, Integrating spheres

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Proceedings Article | 9 October 2021 Poster + Paper

Long-term stability of LED filament standard lamps for total luminous flux

Jinyun Yan, Hui Liu, Weiqiang Zhao, Ying Su

Proceedings Volume 11899, 1189918 (2021) https://doi.org/10.1117/12.2602256

KEYWORDS: Lamps, Light emitting diodes, Standards development, Photometry, Optical spheres, Metrology, Calibration

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Proceedings Article | 9 October 2021 Poster + Paper

Research on aperture area measurement technique based on optical flux comparison method

Zhiwei Liu, Wende Liu, Weiqiang Zhao, Yongjie Lin, Nan Xu, Yandong Lin

Proceedings Volume 11899, 118990Z (2021) https://doi.org/10.1117/12.2601281

KEYWORDS: Measurement devices, Optical testing, Metrology

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Proceedings Article | 10 October 2020 Poster + Paper

A new spectral responsivity calibration comparison of InGaAs photodiode based on cryogenic radiometer fundamentals at the National Institute of Metrology of China

Yingwei He, Haiyong Gan, Wende Liu, Yongjie Lin, Yangyang Wang, Ning Xu, Weiqiang Zhao, Zhiwei Liu, Limin Xiong, Nan Xu, Yandong Lin

Proceedings Volume 11552, 115521V (2020) https://doi.org/10.1117/12.2575380

KEYWORDS: Indium gallium arsenide, Calibration, Photodiodes, Cryogenics, Radiometry, Spectral calibration, Metrology, Monochromators, Light sources, Radio optics

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Proceedings Article | 18 November 2019 Paper

Uncertainty evaluation of colour correction factor using Monte Carlo method in LED photometry measurement

Weiqiang Zhao, Hui Liu, Jinyun Yan, Ying Su, Lin Jiang

Proceedings Volume 11189, 111891V (2019) https://doi.org/10.1117/12.2538759

KEYWORDS: Light emitting diodes, Photometry, Monte Carlo methods, LED lighting, Light sources and illumination, LED displays, Luminous efficiency, Metrology, Numerical simulations, Mathematical modeling

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Proceedings Article | 18 November 2019 Paper

Temperature compensation for LED filament standard lamps

Jinyun Yan, Hui Liu, Weiqiang Zhao, Ying Su

Proceedings Volume 11189, 111891N (2019) https://doi.org/10.1117/12.2537712

KEYWORDS: Lamps, Light emitting diodes, Light sources, Data modeling, Optical testing, Standards development, Head

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Proceedings Article | 2 November 2018 Paper

A timeline-based sampling method applied in National Institute of Metrology primary standard goniophotometer

Weiqiang Zhao, Hui Liu, Jingyun Yan, Ying Su, Lin Jiang

Proceedings Volume 10819, 1081918 (2018) https://doi.org/10.1117/12.2325366

KEYWORDS: Goniophotometry, Light sources, Metrology, Standards development, Signal processing, Lamps, Light emitting diodes, Photodetectors, Visible radiation

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Proceedings Article | 24 November 2016 Paper

The total spectral radiant flux calibration using a spherical spectrometer at National Institute of Metrology China

Weiqiang Zhao, Hui Liu, Jian Liu

Proceedings Volume 10023, 100230Q (2016) https://doi.org/10.1117/12.2245571

KEYWORDS: Calibration, Spectroscopy, Spherical lenses, Lamps, Spectral calibration, Light emitting diodes, Metrology, Silicon, Photodetectors, Optical spheres

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Proceedings Article | 19 October 2016 Paper

The evaluation of uncertainty about the shape of aperture on measurement of averaged LED intensity

Jian Liu, Hui Liu, Wei-qiang Zhao, Cheng Li, Xiao-ying Zhang, Bao-zhou Zhang

Proceedings Volume 10155, 101552U (2016) https://doi.org/10.1117/12.2247219

KEYWORDS: Light emitting diodes, Metrology, Photometry

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Proceedings Article | 22 June 2013 Paper

Estimation of the sampling interval error for LED measurement with a goniophotometer

Weiqiang Zhao, Hui Liu, Jian Liu

Proceedings Volume 8769, 87690N (2013) https://doi.org/10.1117/12.2021051

KEYWORDS: Light emitting diodes, Goniophotometry, Computer simulations, Light sources, Error analysis, Lamps, LED lighting, Optical metrology, Sensors, Metrology

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Showing 5 of 10 publications

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