Fast measurement of chromatic BSDF and its application to LED lighting

Yeh Wei Yu; Wei Hsin Chen; Tsung Hsun Yang; Xuan Hao Lee; Ching Cherng Sun

doi:10.1117/12.2532856

Fast measurement of chromatic BSDF and its application to LED lighting

Yeh Wei Yu, Wei Hsin Chen, Tsung Hsun Yang, Xuan Hao Lee, Ching Cherng Sun

研究成果: 書貢獻/報告類型 › 會議論文篇章 › 同行評審

摘要

Bidirectional scattering distribution function (BSDF) represents the scattered light distribution in forward and backward directions. BSDF is an important function in precise lighting design, because surface scattering is difficult to determine and including it in simulations. However, to measure a whole field BSDF is time consuming, as it can take as long as a day. In this paper, we propose and demonstrate a new way to measure BSDF. We utilize a screen that is illuminated by the scattered light, and a camera that captures the image on the screen. A complex calibration between the grey level of the camera and intensity is performed to make sure the measurement is valid. Through continuously imaging the screen for various scattered light distributions, an image fusion is performed to present the final BSDF. We call this instrument as screen image synthesis (SIS) BSDF meter. In this paper, two generations of SIS BSDF meter was developed, and is shown in details.

原文	???core.languages.en_GB???
主出版物標題	Current Developments in Lens Design and Optical Engineering XX
編輯	R. Barry Johnson, Virendra N. Mahajan, Simon Thibault
發行者	SPIE
ISBN（電子）	9781510629011
DOIs	https://doi.org/10.1117/12.2532856
出版狀態	已出版 - 2019
事件	Current Developments in Lens Design and Optical Engineering XX 2019 - San Diego, United States 持續時間: 12 8月 2019 → …

出版系列

名字	Proceedings of SPIE - The International Society for Optical Engineering
卷	11104
ISSN（列印）	0277-786X
ISSN（電子）	1996-756X

???event.eventtypes.event.conference???

???event.eventtypes.event.conference???	Current Developments in Lens Design and Optical Engineering XX 2019
國家/地區	United States
城市	San Diego
期間	12/08/19 → …

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10.1117/12.2532856

積全像光學元件應用於光子資訊科技的研究－總計畫兼子計畫一 : 複雜波前全像之強繞射模擬模型之研究(3/3)
Sun, C.-C. (PI)
1/08/21 → 31/10/22
研究計畫: Research
體積全像光學元件應用於光子資訊科技的研究－子計畫四：使用體積全像光學元件之無顯示器裸眼3D動態影像(3/3)
Yu, Y.-W. (PI)
1/08/21 → 31/10/22
研究計畫: Research
利用發光二極體作為光源之標準光源系統(2/2)
Yang, T.-H. (PI)
1/08/20 → 31/07/21
研究計畫: Research

引用此

Yu, Y. W., Chen, W. H., Yang, T. H., Lee, X. H., & Sun, C. C. (2019). Fast measurement of chromatic BSDF and its application to LED lighting. 於 R. B. Johnson, V. N. Mahajan, & S. Thibault (編輯), Current Developments in Lens Design and Optical Engineering XX 文章 111040I (Proceedings of SPIE - The International Society for Optical Engineering; 卷 11104). SPIE. https://doi.org/10.1117/12.2532856

@inproceedings{deac7d4e1f4b482894bad378467ea88a,

title = "Fast measurement of chromatic BSDF and its application to LED lighting",

abstract = "Bidirectional scattering distribution function (BSDF) represents the scattered light distribution in forward and backward directions. BSDF is an important function in precise lighting design, because surface scattering is difficult to determine and including it in simulations. However, to measure a whole field BSDF is time consuming, as it can take as long as a day. In this paper, we propose and demonstrate a new way to measure BSDF. We utilize a screen that is illuminated by the scattered light, and a camera that captures the image on the screen. A complex calibration between the grey level of the camera and intensity is performed to make sure the measurement is valid. Through continuously imaging the screen for various scattered light distributions, an image fusion is performed to present the final BSDF. We call this instrument as screen image synthesis (SIS) BSDF meter. In this paper, two generations of SIS BSDF meter was developed, and is shown in details.",

keywords = "BSDF, Intensity distribution, SIS, Screen image synthesis",

author = "Yu, {Yeh Wei} and Chen, {Wei Hsin} and Yang, {Tsung Hsun} and Lee, {Xuan Hao} and Sun, {Ching Cherng}",

note = "Publisher Copyright: {\textcopyright} 2019 SPIE.; Current Developments in Lens Design and Optical Engineering XX 2019 ; Conference date: 12-08-2019",

year = "2019",

doi = "10.1117/12.2532856",

language = "???core.languages.en_GB???",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

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Yu, YW, Chen, WH, Yang, TH, Lee, XH & Sun, CC 2019, Fast measurement of chromatic BSDF and its application to LED lighting. 於 RB Johnson, VN Mahajan & S Thibault (編輯), Current Developments in Lens Design and Optical Engineering XX., 111040I, Proceedings of SPIE - The International Society for Optical Engineering, 卷 11104, SPIE, Current Developments in Lens Design and Optical Engineering XX 2019, San Diego, United States, 12/08/19. https://doi.org/10.1117/12.2532856

Fast measurement of chromatic BSDF and its application to LED lighting. / Yu, Yeh Wei; Chen, Wei Hsin; Yang, Tsung Hsun 等.
Current Developments in Lens Design and Optical Engineering XX. 編輯 / R. Barry Johnson; Virendra N. Mahajan; Simon Thibault. SPIE, 2019. 111040I (Proceedings of SPIE - The International Society for Optical Engineering; 卷 11104).

研究成果: 書貢獻/報告類型 › 會議論文篇章 › 同行評審

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AU - Yu, Yeh Wei

AU - Chen, Wei Hsin

AU - Yang, Tsung Hsun

AU - Lee, Xuan Hao

AU - Sun, Ching Cherng

PY - 2019

Y1 - 2019

N2 - Bidirectional scattering distribution function (BSDF) represents the scattered light distribution in forward and backward directions. BSDF is an important function in precise lighting design, because surface scattering is difficult to determine and including it in simulations. However, to measure a whole field BSDF is time consuming, as it can take as long as a day. In this paper, we propose and demonstrate a new way to measure BSDF. We utilize a screen that is illuminated by the scattered light, and a camera that captures the image on the screen. A complex calibration between the grey level of the camera and intensity is performed to make sure the measurement is valid. Through continuously imaging the screen for various scattered light distributions, an image fusion is performed to present the final BSDF. We call this instrument as screen image synthesis (SIS) BSDF meter. In this paper, two generations of SIS BSDF meter was developed, and is shown in details.

AB - Bidirectional scattering distribution function (BSDF) represents the scattered light distribution in forward and backward directions. BSDF is an important function in precise lighting design, because surface scattering is difficult to determine and including it in simulations. However, to measure a whole field BSDF is time consuming, as it can take as long as a day. In this paper, we propose and demonstrate a new way to measure BSDF. We utilize a screen that is illuminated by the scattered light, and a camera that captures the image on the screen. A complex calibration between the grey level of the camera and intensity is performed to make sure the measurement is valid. Through continuously imaging the screen for various scattered light distributions, an image fusion is performed to present the final BSDF. We call this instrument as screen image synthesis (SIS) BSDF meter. In this paper, two generations of SIS BSDF meter was developed, and is shown in details.

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Fast measurement of chromatic BSDF and its application to LED lighting

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出版系列

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專案

積全像光學元件應用於光子資訊科技的研究－總計畫兼子計畫一 : 複雜 波前全像之強繞射模擬模型之研究(3/3)

體積全像光學元件應用於光子資訊科技的研究－子計畫四：使用體積全 像光學元件之無顯示器裸眼3D動態影像(3/3)

利用發光二極體作為光源之標準光源系統(2/2)

引用此

積全像光學元件應用於光子資訊科技的研究－總計畫兼子計畫一 : 複雜波前全像之強繞射模擬模型之研究(3/3)

體積全像光學元件應用於光子資訊科技的研究－子計畫四：使用體積全像光學元件之無顯示器裸眼3D動態影像(3/3)