Optical design of a LED searchlight system

Chen Gong; Haiping Xu; Jinhua Liang; Yunfei Liu; Zengquan Yuan

doi:10.1117/12.2294610

10 January 2018 Optical design of a LED searchlight system

Chen Gong, Haiping Xu, Jinhua Liang, Yunfei Liu, Zengquan Yuan

Proceedings Volume 10616, 2017 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments; 1061614 (2018) https://doi.org/10.1117/12.2294610
Event: International Conference on Optical Instruments and Technology 2017, 2017, Beijing, China

Abstract

A 1200m visible searchlight system is designed based on photometry and application of geometric optics. To generate intensity distribution of this relatively powerful light beam we propose to use a high power LED and several refractive optical elements, which are composed of two plane-convex lenses and a conventional Fresnel lens. Two plane-convex lenses enable refraction of the side rays from the LED to the front direction which incident on the Fresnel lens. Fresnel lens, in its turn, concentrate the light flux and provide a nearly collimated beam to meet the requirement of forming a well-illuminated area across the road in the far field. Simulation data shows that this searchlight allow generating an appropriate illumination distribution for the long range requirements. A proof-of-concept prototype producing acceptable illuminance is developed.

Citation Download Citation

Chen Gong, Haiping Xu, Jinhua Liang, Yunfei Liu, and Zengquan Yuan "Optical design of a LED searchlight system", Proc. SPIE 10616, 2017 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 1061614 (10 January 2018); https://doi.org/10.1117/12.2294610

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