汽车车灯发展史及发展现状

.,GroupMembers:YuanChen(陈源)BoLiang(梁波),-BriefHistoryAndDevelopment,AutomobileLamp,.,AutomobileLamp,HistoryofAutomobileLampTwoDifferentClassificationsNewTechnology,.,HistoryofAutomobileLamp,Handlamp,TheColumbia,In1887TheEarliestHeadlight-ahandlamp.,In1898Thefirstcarappliedheadlightandtaillight-TheColumbia(哥伦比亚号),.,In1916Turnsignals(转向灯)wasbornhumoro-uslybyThomasC.H.Appl-iedtoautomobilefrom1938to1940.,In1905Theacetylene(乙炔)lampwasusedincarforthefirsttime,HistoryofAutomobileLamp,.,In1868Firsttrafficlights(redandgreen)appearedinLondon,theyareappliedextensivelyin1914,In1920ThreecolorstrafficlightswasinventedbyWilliampotts(威廉姆波茨),HistoryofAutomobileLamp,.,1917Cadillac,AProductofOSRAM(欧司朗),In1913Thehelixtungstenfilamentincande-scentlamp(螺旋钨丝白炽灯)wasinventedandusedtocarbyCadillac.,In1920Reversinglight(倒车灯)wasinvented.,In1924Doublewirebulb（双灯丝灯泡）wasusedtochangeheadlampfromdistancelightanddimheadlights.,HistoryofAutomobileLamp,.,1922Buick,In1920LampwasfixedinsidethecarforthefirsttimebyGM.,HistoryofAutomobileLamp,In1988ParabolicMirror（抛物面反射镜)wasusedtotheheadlights,sidelightsandtaillights.,.,2003奥迪PikesPeakquattro概念车车灯,HIDxenonlamp,In1991BMWfoundHighIntensityDischarge(HID)(高强度气体放电)principles,In1995HIDxenonlampwasfirstusedforMercedes(梅赛德斯)e-classsedan,In2005WhiteLight-EmittingDiode(LEDs)werefirstusedtotheAUDIA8LW12headlampsforthefirsttime.,HistoryofAutomobileLamp,.,In2014SportLaserlightConceptfirstusedlaserheadlight,In2011BMWbeganstudyinglaserheadlight（激光大灯）.,HistoryofAutomobileLamp,AudiSportLaserlightConcept,.,TheClassificationAccordingtoApplication,Toplight(顶灯)ReadingLamp(阅读灯)CompartmentLights(行李厢灯)DoorLamp(门灯),lightsoutsidethecar,Headlight(大灯)ClearanceLamp(示廓灯)Foglight(雾灯)StopLamp(高位刹车灯)ReversingLight(倒车灯)SteeringLamp(转向灯),lightsInsidethecar,CourtesyLamp(踏步灯)InstrumentLamp(仪表板灯)WarningLight(报警指示灯),.,ClassificationAccordingtoLightingPrinciple,InvandescentLightBulb(白炽灯泡)HalogenLamp(卤素灯)GasDischargeLamp(气体放电灯)LEDLamp(LED灯),.,Inte