Optimal design of Fresnel lens for a reading light system with multiple light sources using three-layered hierarchical genetic algorithm

Wen-Gong Chen; Chii-Maw Uang

doi:10.1117/12.687407

21 September 2006 Optimal design of Fresnel lens for a reading light system with multiple light sources using three-layered hierarchical genetic algorithm

Wen-Gong Chen, Chii-Maw Uang

Author Affiliations +

Proceedings Volume 6355, Advanced LEDs for Solid State Lighting; 63550A (2006) https://doi.org/10.1117/12.687407
Event: Asia-Pacific Optical Communications, 2006, Gwangju, South Korea

Abstract

A typical Fresnel lens is not suitable to a reading light system with multiple light sources since it is designed in such a way that each groove is at a slightly different angle from the next but with the same focal length. Therefore, a Fresnel lens with suitably designed groove angles is needed for this kind of light system. In this paper, a more efficient three-layered Hierarchical Genetic Algorithm (3LHGA) is proposed to find an optimal set of groove angles for a designed Fresnel lens to optimize both the illuminace and uniformity for a reading light system with multiple light sources. The groove angles of a designed Fresnel lens are directly derived from a Fresnel lens database by two layers of control genes in the proposed 3LHGA. The proposed 3LHGA not only makes it possible to evolve a lot of groove angles as parametric genes but also further improve the performance of a Fresnel lens and increase the speed of evolution. From the simulation results we can demonstrate that the designed Fresnel lens indeed offers improvement of light-guiding performance for a multiple-LED reading light system.

Citation Download Citation

Wen-Gong Chen and Chii-Maw Uang "Optimal design of Fresnel lens for a reading light system with multiple light sources using three-layered hierarchical genetic algorithm", Proc. SPIE 6355, Advanced LEDs for Solid State Lighting, 63550A (21 September 2006); https://doi.org/10.1117/12.687407

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
13 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Fresnel lenses

Lens design

Light emitting diodes

Light sources

Light

Genetic algorithms

Databases

Show All Keywords

Keywords/Phrases

Search In:

Publication Years