Optical modeling with precise spatial-chromatic light distribution in phosphor-converted white LEDs

Ching-Cherng Sun; Yu-Yu Chang; Yu-Huan Wang; Ching-Yi Chen; Yi-Chien Lo; Han-Hsiang Cheng

doi:10.1117/12.2188092

3 September 2015 Optical modeling with precise spatial-chromatic light distribution in phosphor-converted white LEDs

Ching-Cherng Sun, Yu-Yu Chang, Yu-Huan Wang, Ching-Yi Chen, Yi-Chien Lo, Han-Hsiang Cheng

Proceedings Volume 9578, Current Developments in Lens Design and Optical Engineering XVI; 95780V (2015) https://doi.org/10.1117/12.2188092
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

White light LEDs become more and more important in display and lighting in various structures. Here a new modeling algorithm for phosphor-converted white light-emitting diodes (pcW-LEDs) is proposed, aiming to perform accurate simulation for color appearance, where potentially enabling optical designers to remove yellowish/bluish spots in LED lighting. The proposed modeling method is applied to simulate a pcW-LED with a hemi spherical lens. The simulation accurately predicts the blue and yellow light distribution. The model is further verified by applying a total internal reflector lens to the pcW-LED. In the midfield region, the blue and yellow light distribution exhibit large variations as the observation distance changed; this varying light pattern for both the blue and yellow lights can be accurately predicted by using the proposed model. The well-established optical model should facilitate designing a pcW-LED that features high-quality illumination and enhances color uniformity.

Citation Download Citation

Ching-Cherng Sun, Yu-Yu Chang, Yu-Huan Wang, Ching-Yi Chen, Yi-Chien Lo, and Han-Hsiang Cheng "Optical modeling with precise spatial-chromatic light distribution in phosphor-converted white LEDs", Proc. SPIE 9578, Current Developments in Lens Design and Optical Engineering XVI, 95780V (3 September 2015); https://doi.org/10.1117/12.2188092

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Light emitting diodes

Light sources

Monte Carlo methods

Computer simulations

Optical design

Packaging

Precision optics

Show All Keywords

Keywords/Phrases

Search In:

Publication Years