Design of an LED-based compound optical system for a driving beam system

Aiming Ge,1,* Wei Wang,1 Zhengqing Du,2 Peng Qiu,1 JunweiWang,1 Jinlin Cai,1  and XiaoboSong1

1Department of Light Sources & IlluminatingEngineering, School of Information Science andEngineering, Fudan University,Shanghai 200433,China

2Jiang Su Hongchang Division Science andTechnology Co., Ltd., Danyang 212322, China

*Corresponding author:amge@fudan.edu.cn

Received 3 January 2013;revised 14 March 2013; accepted 15 March 2013;

posted 19 March 2013 (Doc. ID182385); published 16 April 2013

ThispaperproposesanLED-basedcompoundopticalsystem,whichcanbeinvolvedinthedesignofthe drivingbeamsysteminautomotiveheadlampswithhighsystemefficiencyandlowpowerconsumption. ThecompoundsystemcanmeettherequirementsannouncedintheUNECEregulation“Addendum111: RegulationNo.112Revision2.”Also,itiscomposedofanonsphericalreflector,acompoundlens,anda two-dimensionaldiverginglens.Usingasingledeviceofhigh-brightnessLEDofmerely7.6W,thespeci- fiedillumination requirements for the driving beam can be achieved. As we haveexpected, on thetest screenatadistanceof25m,thesimulationresults,aswellasthetestingresultsfortheprototype,can reach the illuminance distributionrequirements, including all specified regions and key points.More- over,thiscompoundsystemenjoysthefeaturesofhighcompactness,highenergyefficiency,and feasibility ofmanufacturing.   © 2013 Optical SocietyofAmerica

OCIS codes:      (220.2945)Illuminationdesign;(220.3620)Lenssystemdesign;(220.4298)Nonimaging optics.