后視鏡是駕駛員坐在駕駛室座位上直接獲取汽車后方、側方和下方等外部信息的工具。為了駕駛員操作方便,防止行車安全事故的發生,保障人身安全,各國均規定了汽車上必須安裝后視鏡,且所有后視鏡都必須能調整方向。
在夜間受到后車的前照燈照射時,后視鏡的反射光進入駕駛員的眼簾,易于造成炫目狀態,所以開發出防炫目內后視鏡。防炫目內后視鏡大致可以分為兩種:
(1)成本低且成為主流的截面為楔型的內后視鏡;
(2)從功能效用的觀點出發,僅在必要的景物時使用的采用了電控彩色發光元件或液晶元件的內后視鏡。
防(fang)眩目電(dian)(dian)(dian)(dian)(dian)動后(hou)視鏡由1個(ge)特殊的電(dian)(dian)(dian)(dian)(dian)化(hua)層鏡面(mian)、2個(ge)光(guang)(guang)電(dian)(dian)(dian)(dian)(dian)傳感器以及電(dian)(dian)(dian)(dian)(dian)子(zi)控制器組(zu)成。電(dian)(dian)(dian)(dian)(dian)子(zi)控制器接收光(guang)(guang)敏二(er)極管傳送(song)的燈光(guang)(guang)照射強度信號,如果后(hou)車(che)(che)(che)燈光(guang)(guang)強于(yu)前車(che)(che)(che)燈光(guang)(guang),電(dian)(dian)(dian)(dian)(dian)子(zi)控制器將輸出一個(ge)電(dian)(dian)(dian)(dian)(dian)壓(ya)到(dao)鏡面(mian),改(gai)(gai)變鏡面(mian)電(dian)(dian)(dian)(dian)(dian)化(hua)層的顏色(se)(se)。這個(ge)電(dian)(dian)(dian)(dian)(dian)壓(ya)越(yue)高(gao),電(dian)(dian)(dian)(dian)(dian)化(hua)層顏色(se)(se)的改(gai)(gai)變越(yue)大。電(dian)(dian)(dian)(dian)(dian)化(hua)層的顏色(se)(se)改(gai)(gai)變后(hou),經過電(dian)(dian)(dian)(dian)(dian)動后(hou)視鏡反射到(dao)駕駛(shi)員(yuan)眼睛的光(guang)(guang)線就顯著減弱,不(bu)但(dan)不(bu)影(ying)響(xiang)駕駛(shi)員(yuan)的視力,反而(er)提(ti)高(gao)了駕乘車(che)(che)(che)輛的舒適性(xing)和安全性(xing)。
輕(qing)騎農用車由山東唐(tang)駿歐(ou)鈴汽車制造(zao)有限公司依(yi)據GB18322-2002、GB19756-2005(I)標準生產制造(zao)
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