銀(yin)幕(mu)架制作(zuo)安裝后，一般要設(she)計制作(zuo)黑l幕(mu)框(kuang)來遮住銀(yin)幕(mu)畫面以外(wai)多余部分(fen)與(yu)放映(ying)光線的虛邊，以及消除因放映(ying)俯映(ying)角引起的梯(ti)形失真（數字放映(ying)機已經(jing)沒有放映(ying)畫面的虛邊并(bing)可矯正(zheng)畫面梯(ti)形失真）等，增(zeng)加觀眾觀看影像的舒適(shi)度。

黑l幕(mu)(mu)框(kuang)一般使用金屬框(kuang)架與深(shen)色(se)織物制作。黑l幕(mu)(mu)框(kuang)分為活(huo)(huo)動(dong)(dong)幕(mu)(mu)框(kuang)和固定幕(mu)(mu)框(kuang)，活(huo)(huo)動(dong)(dong)幕(mu)(mu)框(kuang)（一般為電動(dong)(dong)）是為配合不同畫幅制式(shi)(shi)影(ying)片的放(fang)(fang)映(ying)需要而制作的。活(huo)(huo)動(dong)(dong)幕(mu)(mu)框(kuang)分為等(deng)高放(fang)(fang)映(ying)時的左右(you)活(huo)(huo)動(dong)(dong)，蚌(bang)埠電影(ying)銀幕(mu)(mu)，等(deng)寬放(fang)(fang)映(ying)時的上下活(huo)(huo)動(dong)(dong)，以及等(deng)面積法（變形寬銀幕(mu)(mu)與遮幅寬銀幕(mu)(mu)面積相等(deng)）放(fang)(fang)映(ying)時的上下左右(you)活(huo)(huo)動(dong)(dong)等(deng)形式(shi)(shi)。

LED大(da)屏(ping)幕(mu)的電影播放是(shi)數(shu)字(zi)到(dao)數(shu)字(zi)，全部是(shi)電子(zi)過程，LED燈的色彩經久(jiu)不變，再加上LED屏(ping)幕(mu)是(shi)自(zi)發光(guang)，沒有銀(yin)幕(mu)，也沒有透鏡，電影院銀(yin)幕(mu)多(duo)少(shao)錢一(yi)塊，不產(chan)生反射(she)也就沒有眩光(guang)，而且是(shi)黑底，因此反差就大(da)得多(duo)，圖像的對比度也大(da)得多(duo)。

LED顯示屏的反差(cha)會達到銀幕的數倍(bei)以上(shang)，因此圖像(xiang)的對比度(du)也(ye)會好(hao)很多(duo)。這(zhe)也(ye)就決定了使用(yong)LED屏幕播放(fang)電影不會再出現傳統電影播放(fang)上(shang)刷(shua)新頻率低(di)、失(shi)會聚、散焦(jiao)等普遍存在的問(wen)題。沒有(you)散焦(jiao)，電影銀幕報價，也(ye)沒有(you)失(shi)會聚。

關于穿孔銀幕簡介

通常(chang)放映時為了(le)使聲(sheng)音(yin)(yin)(yin)與畫面(mian)(mian)效果(guo)配合協(xie)調(diao)一(yi)致揚聲(sheng)器蕞(zui)好放置在(zai)(zai)(zai)銀(yin)(yin)幕(mu)后的(de)(de)正中央(yang)處，3D電影銀(yin)(yin)幕(mu)，這時就會影響(xiang)聲(sheng)音(yin)(yin)(yin)的(de)(de)高頻(pin)特性(xing)。為了(le)提(ti)高聲(sheng)音(yin)(yin)(yin)保真(zhen)度，可(ke)使用穿(chuan)(chuan)(chuan)孔(kong)(kong)(kong)(kong)(kong)(kong)銀(yin)(yin)幕(mu)。銀(yin)(yin)幕(mu)穿(chuan)(chuan)(chuan)孔(kong)(kong)(kong)(kong)(kong)(kong)既要獲取蕞(zui)佳的(de)(de)聲(sheng)學特性(xing)，又要使觀(guan)眾觀(guan)察不到(dao)幕(mu)孔(kong)(kong)(kong)(kong)(kong)(kong)。穿(chuan)(chuan)(chuan)孔(kong)(kong)(kong)(kong)(kong)(kong)銀(yin)(yin)幕(mu)的(de)(de)構(gou)造是在(zai)(zai)(zai)幕(mu)面(mian)(mian)均勻打上很多(duo)小(xiao)孔(kong)(kong)(kong)(kong)(kong)(kong)，一(yi)般孔(kong)(kong)(kong)(kong)(kong)(kong)的(de)(de)直徑在(zai)(zai)(zai)0.5－1.2mm之間(jian)(jian)，小(xiao)孔(kong)(kong)(kong)(kong)(kong)(kong)之間(jian)(jian)應有5.5mm的(de)(de)間(jian)(jian)隔：小(xiao)孔(kong)(kong)(kong)(kong)(kong)(kong)面(mian)(mian)積總和占銀(yin)(yin)幕(mu)面(mian)(mian)積的(de)(de)2％～5％左右，這樣觀(guan)眾在(zai)(zai)(zai)觀(guan)看(kan)影像(xiang)時看(kan)不到(dao)小(xiao)孔(kong)(kong)(kong)(kong)(kong)(kong)。穿(chuan)(chuan)(chuan)孔(kong)(kong)(kong)(kong)(kong)(kong)銀(yin)(yin)幕(mu)有不同的(de)(de)幕(mu)面(mian)(mian)構(gou)造。常(chang)見的(de)(de)有橡皮穿(chuan)(chuan)(chuan)孔(kong)(kong)(kong)(kong)(kong)(kong)幕(mu)、塑料穿(chuan)(chuan)(chuan)孔(kong)(kong)(kong)(kong)(kong)(kong)幕(mu)、玻璃(li)珠穿(chuan)(chuan)(chuan)孔(kong)(kong)(kong)(kong)(kong)(kong)幕(mu)、金屬穿(chuan)(chuan)(chuan)孔(kong)(kong)(kong)(kong)(kong)(kong)幕(mu)等。銀(yin)(yin)幕(mu)經穿(chuan)(chuan)(chuan)孔(kong)(kong)(kong)(kong)(kong)(kong)后，其表面(mian)(mian)特性(xing)不變(bian)，只(zhi)是改變(bian)了(le)音(yin)(yin)(yin)響(xiang)效果(guo)。穿(chuan)(chuan)(chuan)孔(kong)(kong)(kong)(kong)(kong)(kong)銀(yin)(yin)幕(mu)因幕(mu)面(mian)(mian)有孔(kong)(kong)(kong)(kong)(kong)(kong)，透(tou)光較(jiao)多(duo)，亮度將(jiang)降低。