偏光鏡好還是太陽鏡好
太陽鏡就是人們熟知用于遮擋陽光和紫外線的有色眼鏡,不能避免眩光對眼睛的傷害。而偏光鏡能徹底濾除眩光,達到對眼睛的真正保護,知名偏光鏡品牌保護效果更好。太(tai)(tai)陽(yang)鏡只是(shi)利用(yong)減光(guang)的作用(yong),降低了有(you)害(hai)光(guang)線的強(qiang)度,并沒有(you)阻隔有(you)害(hai)光(guang)線。偏光(guang)眼鏡可(ke)以(yi)(yi)完全阻隔散射(she)、曲折(zhe)和(he)反射(she)等(deng)各種因(yin)素(su)造成的刺(ci)眼眩光(guang),即(ji)使長期從事強(qiang)光(guang)活動,眼睛也可(ke)以(yi)(yi)得到(dao)保護。偏光(guang)鏡含(han)有(you)偏光(guang)夾片,能(neng)夠(gou)解決近視(shi)問題,而太(tai)(tai)陽(yang)鏡沒有(you)此(ci)優勢。
如何分辨普通太陽鏡片和偏光鏡片
辨別(bie)偏(pian)光鏡(jing)(jing)的方法很多,其中比較(jiao)簡(jian)單的一個就是:將兩片(pian)偏(pian)光鏡(jing)(jing)片(pian)垂(chui)直疊(die)放(fang),鏡(jing)(jing)片(pian)將會出(chu)現不(bu)透光現象。原因是偏(pian)光鏡(jing)(jing)鏡(jing)(jing)片(pian)特殊設計(ji)只讓平(ping)行的光通過(guo)鏡(jing)(jing)片(pian),在兩鏡(jing)(jing)片(pian)垂(chui)直疊(die)放(fang)時則光線大部分被阻(zu)擋(dang)。大家在購買時,只要如此(ci)一個簡(jian)單的操作,便立刻可(ke)以知(zhi)道(dao)產品的真偽(wei)及好壞了。
偏光鏡的作用
偏光(guang)鏡的(de)特效就是有效地排除(chu)和濾除(chu)光(guang)束中的(de)散射光(guang)線。使(shi)(shi)光(guang)線能于正軌之透光(guang)軸投入(ru)(ru)眼睛視覺影像,使(shi)(shi)視野清晰自(zi)然。有如百(bai)葉窗簾的(de)原理(li),光(guang)線被調整成同向(xiang)光(guang)而(er)進入(ru)(ru)室(shi)內,自(zi)然使(shi)(shi)景物看起來柔(rou)和而(er)不(bu)刺眼。
偏光鏡原理
偏光(guang)(guang)(guang)(guang)(guang)鏡(jing)(piān guāng jìng)是根(gen)(gen)據光(guang)(guang)(guang)(guang)(guang)線(xian)(xian)(xian)的(de)(de)偏振原理制(zhi)造的(de)(de)鏡(jing)片,用(yong)(yong)來排除(chu)和(he)濾除(chu)光(guang)(guang)(guang)(guang)(guang)束中(zhong)的(de)(de)直射光(guang)(guang)(guang)(guang)(guang)線(xian)(xian)(xian),使光(guang)(guang)(guang)(guang)(guang)線(xian)(xian)(xian)能于(yu)正(zheng)軌之透光(guang)(guang)(guang)(guang)(guang)軸投(tou)入眼(yan)睛視覺影像,使視野(ye)清晰自然。多用(yong)(yong)于(yu)太陽鏡(jing)和(he)照(zhao)相機鏡(jing)頭。偏光(guang)(guang)(guang)(guang)(guang)鏡(jing)的(de)(de)工(gong)作原理是選擇性地過(guo)濾來自某個方(fang)向的(de)(de)光(guang)(guang)(guang)(guang)(guang)線(xian)(xian)(xian)。通過(guo)過(guo)濾掉漫反射中(zhong)的(de)(de)許多偏振光(guang)(guang)(guang)(guang)(guang),從而(er)減(jian)弱天(tian)空(kong)中(zhong)光(guang)(guang)(guang)(guang)(guang)線(xian)(xian)(xian)的(de)(de)強度,把天(tian)空(kong)壓(ya)暗(an),并增加藍天(tian)和(he)白云之間(jian)的(de)(de)反差。具體實拍時要(yao)看著取(qu)(qu)景器(qi)并旋轉(zhuan)前鏡(jing),取(qu)(qu)景器(qi)中(zhong)天(tian)空(kong)最(zui)(zui)暗(an)時的(de)(de)效果最(zui)(zui)明(ming)顯,最(zui)(zui)暗(an)與最(zui)(zui)亮(liang)相差90度。你(ni)可根(gen)(gen)據需要(yao)轉(zhuan)到(dao)最(zui)(zui)暗(an)與最(zui)(zui)亮(liang)間(jian)的(de)(de)任(ren)意角(jiao)度。