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; Tsung-Hsun Yang; Yeh-Wei Yu

doi:10.1117/12.2632996

3 October 2022 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, Tsung-Hsun Yang, Yeh-Wei Yu

Proceedings Volume 12217, Current Developments in Lens Design and Optical Engineering XXIII; 122170G (2022) https://doi.org/10.1117/12.2632996
Event: SPIE Optical Engineering + Applications, 2022, San Diego, California, United States

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.

Citation Download Citation

Thi Thu Ngoc Le, Shih-Kang Lin, Ching-Cherng Sun, Quang-Khoi Nguyen, Tsung-Hsun Yang, and Yeh-Wei Yu "Light source modeling for UltraViolet-C Light-Emitting Diodes (UV-C LEDs) with aid of fluorescent film", Proc. SPIE 12217, Current Developments in Lens Design and Optical Engineering XXIII, 122170G (3 October 2022); https://doi.org/10.1117/12.2632996

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available