Light source modeling for ultraviolet-c light-emitting diodes (UV-C LEDs) with aid of fluorescent film

Thi Thu Ngoc Le; Shih Kang Lin; Ching Cherng Sun; Quang Khoi Nguyen; Chi Shou Wu; Tsung Hsun Yang; Yeh Wei Yu

doi:10.1117/12.2632996

Light source modeling for ultraviolet-c light-emitting diodes (UV-C LEDs) with aid of fluorescent film

Thi Thu Ngoc Le, Shih Kang Lin, Ching Cherng Sun, Quang Khoi Nguyen, Chi Shou Wu, Tsung Hsun Yang, Yeh Wei Yu

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

We perform the mid-field model of a UV-C LED with an arranged wavelength of around 275 nm by comparing the 2-dimension (2-D) gray-level image captured by a monochromatic CMOS and the corresponding simulated irradiance pattern. Owing to UV-C light, we propose using a fluorescent film to absorb UV-C light and re-emit light at a longer wavelength so that the 2-D gray level image can be captured. The calibration to approach the corrected gray level of image is presented. Consequently, we obtain the precise mid-field light source model. Moreover, the model is also applied for dome lens design and then compares the optical behavior with fabricated samples in measurement to evaluate its validity.

Original language	English
Title of host publication	Current Developments in Lens Design and Optical Engineering XXIII
Editors	R. Barry Johnson, Virendra N. Mahajan, Simon Thibault, Alfonso Padilla-Vivanco
Publisher	SPIE
ISBN (Electronic)	9781510654181
DOIs	https://doi.org/10.1117/12.2632996
State	Published - 2022
Event	Current Developments in Lens Design and Optical Engineering XXIII 2022 - San Diego, United States Duration: 23 Aug 2022 → 24 Aug 2022

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	12217
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Current Developments in Lens Design and Optical Engineering XXIII 2022
Country/Territory	United States
City	San Diego
Period	23/08/22 → 24/08/22

Keywords

UV-C LED
fluorescent film
light source model
mid-field model

Access to Document

10.1117/12.2632996

Cite this

Le, T. T. N., Lin, S. K., Sun, C. C., Nguyen, Q. K., Wu, C. S., Yang, T. H., & Yu, Y. W. (2022). Light source modeling for ultraviolet-c light-emitting diodes (UV-C LEDs) with aid of fluorescent film. In R. B. Johnson, V. N. Mahajan, S. Thibault, & A. Padilla-Vivanco (Eds.), Current Developments in Lens Design and Optical Engineering XXIII Article 122170G (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 12217). SPIE. https://doi.org/10.1117/12.2632996

Le, Thi Thu Ngoc ; Lin, Shih Kang ; Sun, Ching Cherng et al. / Light source modeling for ultraviolet-c light-emitting diodes (UV-C LEDs) with aid of fluorescent film. Current Developments in Lens Design and Optical Engineering XXIII. editor / R. Barry Johnson ; Virendra N. Mahajan ; Simon Thibault ; Alfonso Padilla-Vivanco. SPIE, 2022. (Proceedings of SPIE - The International Society for Optical Engineering).

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title = "Light source modeling for ultraviolet-c light-emitting diodes (UV-C LEDs) with aid of fluorescent film",

abstract = "We perform the mid-field model of a UV-C LED with an arranged wavelength of around 275 nm by comparing the 2-dimension (2-D) gray-level image captured by a monochromatic CMOS and the corresponding simulated irradiance pattern. Owing to UV-C light, we propose using a fluorescent film to absorb UV-C light and re-emit light at a longer wavelength so that the 2-D gray level image can be captured. The calibration to approach the corrected gray level of image is presented. Consequently, we obtain the precise mid-field light source model. Moreover, the model is also applied for dome lens design and then compares the optical behavior with fabricated samples in measurement to evaluate its validity.",

keywords = "UV-C LED, fluorescent film, light source model, mid-field model",

author = "Le, {Thi Thu Ngoc} and Lin, {Shih Kang} and Sun, {Ching Cherng} and Nguyen, {Quang Khoi} and Wu, {Chi Shou} and Yang, {Tsung Hsun} and Yu, {Yeh Wei}",

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Le, TTN, Lin, SK, Sun, CC, Nguyen, QK, Wu, CS, Yang, TH & Yu, YW 2022, Light source modeling for ultraviolet-c light-emitting diodes (UV-C LEDs) with aid of fluorescent film. in RB Johnson, VN Mahajan, S Thibault & A Padilla-Vivanco (eds), Current Developments in Lens Design and Optical Engineering XXIII., 122170G, Proceedings of SPIE - The International Society for Optical Engineering, vol. 12217, SPIE, Current Developments in Lens Design and Optical Engineering XXIII 2022, San Diego, United States, 23/08/22. https://doi.org/10.1117/12.2632996

Light source modeling for ultraviolet-c light-emitting diodes (UV-C LEDs) with aid of fluorescent film. / Le, Thi Thu Ngoc; Lin, Shih Kang; Sun, Ching Cherng et al.
Current Developments in Lens Design and Optical Engineering XXIII. ed. / R. Barry Johnson; Virendra N. Mahajan; Simon Thibault; Alfonso Padilla-Vivanco. SPIE, 2022. 122170G (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 12217).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Le, Thi Thu Ngoc

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AB - We perform the mid-field model of a UV-C LED with an arranged wavelength of around 275 nm by comparing the 2-dimension (2-D) gray-level image captured by a monochromatic CMOS and the corresponding simulated irradiance pattern. Owing to UV-C light, we propose using a fluorescent film to absorb UV-C light and re-emit light at a longer wavelength so that the 2-D gray level image can be captured. The calibration to approach the corrected gray level of image is presented. Consequently, we obtain the precise mid-field light source model. Moreover, the model is also applied for dome lens design and then compares the optical behavior with fabricated samples in measurement to evaluate its validity.

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Le TTN, Lin SK, Sun CC, Nguyen QK, Wu CS, Yang TH et al. Light source modeling for ultraviolet-c light-emitting diodes (UV-C LEDs) with aid of fluorescent film. In Johnson RB, Mahajan VN, Thibault S, Padilla-Vivanco A, editors, Current Developments in Lens Design and Optical Engineering XXIII. SPIE. 2022. 122170G. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.2632996

Light source modeling for ultraviolet-c light-emitting diodes (UV-C LEDs) with aid of fluorescent film

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