本發明涉及(ji)星(xing)模擬技(ji)術，尤其涉及(ji)一種(zhong)具有(you)偏(pian)振背景(jing)雜光(guang)抑制的動態星(xing)模擬器光(guang)學(xue)引擎。

背景技術：

1、動(dong)(dong)(dong)態(tai)星(xing)(xing)(xing)(xing)(xing)模(mo)(mo)擬(ni)(ni)器(qi)是一種在地(di)面模(mo)(mo)擬(ni)(ni)動(dong)(dong)(dong)態(tai)星(xing)(xing)(xing)(xing)(xing)圖，供星(xing)(xing)(xing)(xing)(xing)敏感器(qi)觀測(ce)標(biao)定的(de)功能檢測(ce)型(xing)星(xing)(xing)(xing)(xing)(xing)模(mo)(mo)擬(ni)(ni)器(qi)。動(dong)(dong)(dong)態(tai)星(xing)(xing)(xing)(xing)(xing)模(mo)(mo)擬(ni)(ni)器(qi)可(ke)以模(mo)(mo)擬(ni)(ni)星(xing)(xing)(xing)(xing)(xing)點(dian)的(de)星(xing)(xing)(xing)(xing)(xing)等、單星(xing)(xing)(xing)(xing)(xing)張角、星(xing)(xing)(xing)(xing)(xing)間(jian)角距的(de)信息，主要(yao)由星(xing)(xing)(xing)(xing)(xing)模(mo)(mo)擬(ni)(ni)器(qi)投影光學(xue)系(xi)統、光學(xue)引(yin)擎(qing)和驅動(dong)(dong)(dong)控制系(xi)統組成。其中，光學(xue)引(yin)擎(qing)用于顯示出高對比(bi)度的(de)動(dong)(dong)(dong)態(tai)星(xing)(xing)(xing)(xing)(xing)圖，是動(dong)(dong)(dong)態(tai)星(xing)(xing)(xing)(xing)(xing)模(mo)(mo)擬(ni)(ni)器(qi)中的(de)重要(yao)組成部分。

2、目(mu)前傳(chuan)(chuan)統(tong)動(dong)態(tai)星(xing)(xing)(xing)模(mo)擬(ni)器(qi)光(guang)學引擎多由準直(zhi)照明光(guang)源、偏(pian)振(zhen)(zhen)分光(guang)棱鏡、lcos顯示器(qi)件組成(cheng)。雖然傳(chuan)(chuan)統(tong)動(dong)態(tai)星(xing)(xing)(xing)模(mo)擬(ni)器(qi)能(neng)夠實(shi)現動(dong)態(tai)星(xing)(xing)(xing)圖的(de)高精(jing)度模(mo)擬(ni)，但是受(shou)到實(shi)際準直(zhi)光(guang)源準直(zhi)角的(de)影響，傳(chuan)(chuan)統(tong)動(dong)態(tai)星(xing)(xing)(xing)模(mo)擬(ni)器(qi)光(guang)學引擎中會存在大量(liang)偏(pian)振(zhen)(zhen)背(bei)景雜(za)光(guang)，影響動(dong)態(tai)星(xing)(xing)(xing)點的(de)模(mo)擬(ni)，尤(you)其影響暗弱(ruo)星(xing)(xing)(xing)點的(de)模(mo)擬(ni)，導(dao)致(zhi)星(xing)(xing)(xing)點質心變化甚至雜(za)光(guang)能(neng)量(liang)淹沒星(xing)(xing)(xing)點能(neng)量(liang)。受(shou)此影響，傳(chuan)(chuan)統(tong)動(dong)態(tai)星(xing)(xing)(xing)模(mo)擬(ni)器(qi)的(de)星(xing)(xing)(xing)等模(mo)擬(ni)范圍一般在0~+6.5mv，已(yi)經遠不能(neng)滿足(zu)目(mu)前深空暗弱(ruo)目(mu)標探(tan)測器(qi)的(de)標定(ding)需求，制約了(le)航天(tian)事業的(de)發展。

3、為降低傳統動(dong)(dong)態(tai)(tai)星(xing)模(mo)擬(ni)(ni)器(qi)(qi)中的背(bei)景雜光，提高(gao)動(dong)(dong)態(tai)(tai)星(xing)模(mo)擬(ni)(ni)器(qi)(qi)模(mo)擬(ni)(ni)星(xing)點(dian)的星(xing)等，需要(yao)一種具有(you)偏振背(bei)景雜光抑制(zhi)的動(dong)(dong)態(tai)(tai)星(xing)模(mo)擬(ni)(ni)器(qi)(qi)光學(xue)引擎，實現動(dong)(dong)態(tai)(tai)星(xing)模(mo)擬(ni)(ni)器(qi)(qi)背(bei)景雜光抑制(zhi)和(he)模(mo)擬(ni)(ni)暗(an)弱星(xing)等的提高(gao)。

技術實現思路

1、本發(fa)明提出一種具有(you)(you)偏振背(bei)景雜光抑制的(de)(de)動態星模擬(ni)器光學(xue)引擎(qing)，其目(mu)的(de)(de)是解決現有(you)(you)動態星模擬(ni)器光學(xue)引擎(qing)因背(bei)景雜光問(wen)題導致的(de)(de)模擬(ni)暗(an)弱星等(deng)低(di)的(de)(de)問(wen)題。本發(fa)明采(cai)用(yong)的(de)(de)技術方案(an)如下(xia)：

2、一(yi)種具(ju)有偏(pian)(pian)(pian)振(zhen)背景雜(za)光(guang)抑制的(de)動(dong)態星模擬(ni)器光(guang)學引(yin)擎(qing)，包括(kuo)偏(pian)(pian)(pian)振(zhen)片組(zu)(zu)、準直光(guang)源、偏(pian)(pian)(pian)振(zhen)分光(guang)棱鏡(jing)、lcos顯示(shi)器件(jian)；所述偏(pian)(pian)(pian)振(zhen)片組(zu)(zu)包括(kuo)第一(yi)偏(pian)(pian)(pian)振(zhen)片、第二偏(pian)(pian)(pian)振(zhen)片、第三偏(pian)(pian)(pian)振(zhen)片。

3、所(suo)(suo)(suo)述(shu)偏(pian)(pian)(pian)振(zhen)(zhen)分(fen)(fen)(fen)光(guang)(guang)(guang)棱鏡(jing)放置(zhi)(zhi)在星模(mo)擬(ni)器準直投影鏡(jing)頭(tou)的入光(guang)(guang)(guang)口之(zhi)前；所(suo)(suo)(suo)述(shu)準直光(guang)(guang)(guang)源(yuan)位(wei)(wei)于(yu)(yu)偏(pian)(pian)(pian)振(zhen)(zhen)分(fen)(fen)(fen)光(guang)(guang)(guang)棱鏡(jing)正(zheng)(zheng)上方(fang)(fang)；所(suo)(suo)(suo)述(shu)第一偏(pian)(pian)(pian)振(zhen)(zhen)片放置(zhi)(zhi)在偏(pian)(pian)(pian)振(zhen)(zhen)分(fen)(fen)(fen)光(guang)(guang)(guang)棱鏡(jing)正(zheng)(zheng)上方(fang)(fang)，位(wei)(wei)于(yu)(yu)偏(pian)(pian)(pian)振(zhen)(zhen)分(fen)(fen)(fen)光(guang)(guang)(guang)棱鏡(jing)與準直光(guang)(guang)(guang)源(yuan)之(zhi)間(jian)；所(suo)(suo)(suo)述(shu)第二偏(pian)(pian)(pian)振(zhen)(zhen)片放置(zhi)(zhi)在偏(pian)(pian)(pian)振(zhen)(zhen)分(fen)(fen)(fen)光(guang)(guang)(guang)棱鏡(jing)正(zheng)(zheng)下方(fang)(fang)，位(wei)(wei)于(yu)(yu)偏(pian)(pian)(pian)振(zhen)(zhen)分(fen)(fen)(fen)光(guang)(guang)(guang)棱鏡(jing)與下端(duan)棱鏡(jing)鏡(jing)架機械結構之(zhi)間(jian)；所(suo)(suo)(suo)述(shu)第三偏(pian)(pian)(pian)振(zhen)(zhen)片放置(zhi)(zhi)在偏(pian)(pian)(pian)振(zhen)(zhen)分(fen)(fen)(fen)光(guang)(guang)(guang)棱鏡(jing)正(zheng)(zheng)前方(fang)(fang)，位(wei)(wei)于(yu)(yu)偏(pian)(pian)(pian)振(zhen)(zhen)分(fen)(fen)(fen)光(guang)(guang)(guang)棱鏡(jing)與星模(mo)擬(ni)器準直投影鏡(jing)頭(tou)的入光(guang)(guang)(guang)口之(zhi)間(jian)；所(suo)(suo)(suo)述(shu)lcos顯示器件(jian)位(wei)(wei)于(yu)(yu)偏(pian)(pian)(pian)振(zhen)(zhen)分(fen)(fen)(fen)光(guang)(guang)(guang)棱鏡(jing)正(zheng)(zheng)后方(fang)(fang)；

4、進一(yi)(yi)步地，所(suo)(suo)述(shu)偏(pian)振(zhen)分光(guang)棱鏡(jing)(jing)(jing)的偏(pian)振(zhen)分光(guang)膜層與(yu)(yu)星(xing)模(mo)(mo)(mo)擬器(qi)準(zhun)直(zhi)(zhi)投影(ying)(ying)(ying)(ying)鏡(jing)(jing)(jing)頭(tou)(tou)(tou)出射(she)(she)光(guang)光(guang)軸(zhou)(zhou)方(fang)向成45°角；所(suo)(suo)述(shu)準(zhun)直(zhi)(zhi)光(guang)源光(guang)軸(zhou)(zhou)與(yu)(yu)星(xing)模(mo)(mo)(mo)擬器(qi)準(zhun)直(zhi)(zhi)投影(ying)(ying)(ying)(ying)鏡(jing)(jing)(jing)頭(tou)(tou)(tou)出射(she)(she)光(guang)光(guang)軸(zhou)(zhou)垂(chui)(chui)直(zhi)(zhi)，并且處(chu)于同(tong)一(yi)(yi)平(ping)面(mian)；所(suo)(suo)述(shu)lcos顯示(shi)器(qi)件的顯示(shi)部分幾何中心(xin)位于星(xing)模(mo)(mo)(mo)擬器(qi)準(zhun)直(zhi)(zhi)投影(ying)(ying)(ying)(ying)鏡(jing)(jing)(jing)頭(tou)(tou)(tou)出射(she)(she)光(guang)光(guang)軸(zhou)(zhou)上(shang)，顯示(shi)部分正對星(xing)模(mo)(mo)(mo)擬器(qi)準(zhun)直(zhi)(zhi)投影(ying)(ying)(ying)(ying)鏡(jing)(jing)(jing)頭(tou)(tou)(tou)的入光(guang)口；所(suo)(suo)述(shu)第(di)(di)一(yi)(yi)偏(pian)振(zhen)片透(tou)光(guang)軸(zhou)(zhou)與(yu)(yu)星(xing)模(mo)(mo)(mo)擬器(qi)準(zhun)直(zhi)(zhi)投影(ying)(ying)(ying)(ying)鏡(jing)(jing)(jing)頭(tou)(tou)(tou)出射(she)(she)光(guang)光(guang)軸(zhou)(zhou)在(zai)(zai)水平(ping)方(fang)向垂(chui)(chui)直(zhi)(zhi)；所(suo)(suo)述(shu)第(di)(di)二偏(pian)振(zhen)片透(tou)光(guang)軸(zhou)(zhou)與(yu)(yu)星(xing)模(mo)(mo)(mo)擬器(qi)準(zhun)直(zhi)(zhi)投影(ying)(ying)(ying)(ying)鏡(jing)(jing)(jing)頭(tou)(tou)(tou)出射(she)(she)光(guang)光(guang)軸(zhou)(zhou)在(zai)(zai)水平(ping)方(fang)向垂(chui)(chui)直(zhi)(zhi)；所(suo)(suo)述(shu)第(di)(di)三偏(pian)振(zhen)片透(tou)光(guang)軸(zhou)(zhou)與(yu)(yu)星(xing)模(mo)(mo)(mo)擬器(qi)準(zhun)直(zhi)(zhi)投影(ying)(ying)(ying)(ying)鏡(jing)(jing)(jing)頭(tou)(tou)(tou)出射(she)(she)光(guang)光(guang)軸(zhou)(zhou)在(zai)(zai)豎直(zhi)(zhi)方(fang)向垂(chui)(chui)直(zhi)(zhi)；

5、工作時，所(suo)(suo)述(shu)(shu)(shu)準直光(guang)(guang)源(yuan)用(yong)于(yu)為光(guang)(guang)學引擎照(zhao)明(ming)，點亮lcos顯示器件；所(suo)(suo)述(shu)(shu)(shu)偏(pian)(pian)(pian)(pian)振(zhen)(zhen)分(fen)光(guang)(guang)棱(leng)鏡用(yong)于(yu)調(diao)制(zhi)(zhi)照(zhao)明(ming)光(guang)(guang)源(yuan)，將用(yong)于(yu)照(zhao)明(ming)lcos顯示器件的(de)(de)偏(pian)(pian)(pian)(pian)振(zhen)(zhen)光(guang)(guang)分(fen)光(guang)(guang)反(fan)射(she)(she)，并(bing)使成(cheng)(cheng)像(xiang)(xiang)光(guang)(guang)束透射(she)(she)出(chu)射(she)(she)；所(suo)(suo)述(shu)(shu)(shu)lcos顯示器件用(yong)于(yu)顯示動(dong)態星圖(tu)，接受(shou)照(zhao)明(ming)光(guang)(guang)并(bing)調(diao)制(zhi)(zhi)，以成(cheng)(cheng)像(xiang)(xiang)光(guang)(guang)束反(fan)射(she)(she)出(chu)射(she)(she)；所(suo)(suo)述(shu)(shu)(shu)第一偏(pian)(pian)(pian)(pian)振(zhen)(zhen)片(pian)用(yong)于(yu)對(dui)(dui)照(zhao)明(ming)光(guang)(guang)束起(qi)偏(pian)(pian)(pian)(pian)，起(qi)偏(pian)(pian)(pian)(pian)成(cheng)(cheng)為線偏(pian)(pian)(pian)(pian)振(zhen)(zhen)光(guang)(guang)以降低進入偏(pian)(pian)(pian)(pian)振(zhen)(zhen)分(fen)光(guang)(guang)棱(leng)鏡后形成(cheng)(cheng)的(de)(de)成(cheng)(cheng)像(xiang)(xiang)路徑雜光(guang)(guang)；所(suo)(suo)述(shu)(shu)(shu)第二偏(pian)(pian)(pian)(pian)振(zhen)(zhen)片(pian)用(yong)于(yu)對(dui)(dui)非照(zhao)明(ming)光(guang)(guang)束消光(guang)(guang)，阻(zu)止其(qi)到達機械表(biao)面產(chan)生散(san)射(she)(she)偏(pian)(pian)(pian)(pian)振(zhen)(zhen)雜光(guang)(guang)，降低非成(cheng)(cheng)像(xiang)(xiang)光(guang)(guang)路雜光(guang)(guang)；所(suo)(suo)述(shu)(shu)(shu)第三(san)偏(pian)(pian)(pian)(pian)振(zhen)(zhen)片(pian)用(yong)于(yu)對(dui)(dui)出(chu)射(she)(she)成(cheng)(cheng)像(xiang)(xiang)光(guang)(guang)檢偏(pian)(pian)(pian)(pian)，過(guo)濾內部未充分(fen)調(diao)制(zhi)(zhi)的(de)(de)偏(pian)(pian)(pian)(pian)振(zhen)(zhen)雜光(guang)(guang)以及大角(jiao)度散(san)射(she)(she)雜光(guang)(guang)；

6、進一步地(di)，根據公式，入(ru)射光強為(wei) i0，當兩偏振片(pian)透光軸(zhou)正交(jiao)時(shi)（θ=90°），出射光強 i( θ)為(wei)0，即實現(xian)消光。偏振片(pian)的(de)透光軸(zhou)方(fang)向具體設置方(fang)法為(wei)：

7、（1）第一偏振片

8、根據(ju)對比(bi)度公式，在準直(zhi)(zhi)光(guang)(guang)(guang)源照(zhao)射(she)下光(guang)(guang)(guang)束孔徑角很小(xiao)，對比(bi)度可以簡化為。所述第一偏(pian)振(zhen)片(pian)透光(guang)(guang)(guang)軸(zhou)(zhou)與星(xing)模擬器準直(zhi)(zhi)投影鏡頭出射(she)光(guang)(guang)(guang)光(guang)(guang)(guang)軸(zhou)(zhou)在水平方向垂直(zhi)(zhi)時，p光(guang)(guang)(guang)分(fen)量被有效消除，偏(pian)振(zhen)背(bei)景雜光(guang)(guang)(guang)得到抑制(zhi)；

9、（2）第二偏振片

10、根據機械(xie)表面(mian)雜光(guang)能量傳輸公式，為散射(she)(she)雜光(guang)輻射(she)(she)通量， di0· t  p為偏(pian)振(zhen)分光(guang)棱(leng)鏡透(tou)射(she)(she)p光(guang)光(guang)強， θ s為發光(guang)面(mian)源(yuan)與接受面(mian)源(yuan)法線夾角(jiao)。則(ze)所述(shu)第二偏(pian)振(zhen)片透(tou)光(guang)軸與星(xing)模(mo)擬器準直投影鏡頭出射(she)(she)光(guang)光(guang)軸在水(shui)平方向垂直時(shi)p光(guang)分量被(bei)有效消除，散射(she)(she)偏(pian)振(zhen)背景雜光(guang)得到抑(yi)制；

11、（3）第(di)三偏振片

12、根據(ju)公式(shi)，所述所述第(di)(di)三偏(pian)振(zhen)(zhen)(zhen)片透光(guang)(guang)軸(zhou)(zhou)(zhou)與星模擬器(qi)準直投影鏡頭出射光(guang)(guang)光(guang)(guang)軸(zhou)(zhou)(zhou)在(zai)豎(shu)直方(fang)向垂直時，第(di)(di)三偏(pian)振(zhen)(zhen)(zhen)片透光(guang)(guang)軸(zhou)(zhou)(zhou)與第(di)(di)一偏(pian)振(zhen)(zhen)(zhen)片、第(di)(di)二偏(pian)振(zhen)(zhen)(zhen)片透光(guang)(guang)軸(zhou)(zhou)(zhou)正交，實現對未充分調制的偏(pian)振(zhen)(zhen)(zhen)背景雜(za)光(guang)(guang)抑制。

13、與現有技術相比，本(ben)發明的優(you)勢在于：

14、本發明采(cai)用偏振消(xiao)光原理設計動態星模擬(ni)器的光學引擎(qing)，僅通過設置(zhi)不(bu)同(tong)透(tou)光軸方向的偏振片(pian)組合即可(ke)實(shi)現對(dui)傳統光學引擎(qing)中的偏振雜(za)光進行抑制(zhi)，可(ke)顯(xian)著減小光學引擎(qing)中的雜(za)光抑制(zhi)結構(gou)，有(you)效(xiao)提高了光學引擎(qing)的集(ji)成度；

15、此外，星模(mo)擬器(qi)準直投影鏡(jing)(jing)(jing)頭前的(de)第三偏振(zhen)(zhen)片(pian)可以對出(chu)射光進行檢偏，讓(rang)充分(fen)調制(zhi)的(de)p光偏振(zhen)(zhen)出(chu)射光順利投射，抑制(zhi)調制(zhi)不充分(fen)的(de)lcos顯示(shi)器(qi)件(jian)暗(an)態漏光及偏振(zhen)(zhen)分(fen)光棱鏡(jing)(jing)(jing)和下(xia)端金屬棱鏡(jing)(jing)(jing)鏡(jing)(jing)(jing)座的(de)散射偏振(zhen)(zhen)雜光，從(cong)而有效(xiao)提高顯示(shi)星圖的(de)對比度。

16、該動態(tai)(tai)星(xing)模(mo)擬器(qi)(qi)光學引擎工作時不(bu)會影(ying)響開(kai)態(tai)(tai)lcos顯示器(qi)(qi)件的(de)(de)星(xing)點(dian)顯示，而有效抑(yi)制了光學引擎系統的(de)(de)偏振背景雜光，使得動態(tai)(tai)星(xing)模(mo)擬器(qi)(qi)能夠(gou)實現對暗弱星(xing)點(dian)的(de)(de)模(mo)擬，為動態(tai)(tai)星(xing)模(mo)擬器(qi)(qi)模(mo)擬星(xing)等(deng)提(ti)高提(ti)供可靠保證。

技術特征：

1.一種具有(you)偏(pian)(pian)振(zhen)(zhen)(zhen)(zhen)背景雜光(guang)(guang)(guang)(guang)(guang)(guang)抑制(zhi)的(de)動態(tai)星模(mo)擬(ni)器(qi)光(guang)(guang)(guang)(guang)(guang)(guang)學引(yin)擎，其(qi)特征在于(yu)(yu)，包括(kuo)偏(pian)(pian)振(zhen)(zhen)(zhen)(zhen)片(pian)組(zu)、準直(zhi)光(guang)(guang)(guang)(guang)(guang)(guang)源、偏(pian)(pian)振(zhen)(zhen)(zhen)(zhen)分(fen)(fen)(fen)(fen)(fen)(fen)光(guang)(guang)(guang)(guang)(guang)(guang)棱鏡(jing)、lcos顯示器(qi)件(jian)；所(suo)述(shu)(shu)偏(pian)(pian)振(zhen)(zhen)(zhen)(zhen)片(pian)組(zu)包括(kuo)第(di)(di)一偏(pian)(pian)振(zhen)(zhen)(zhen)(zhen)片(pian)、第(di)(di)二(er)偏(pian)(pian)振(zhen)(zhen)(zhen)(zhen)片(pian)、第(di)(di)三偏(pian)(pian)振(zhen)(zhen)(zhen)(zhen)片(pian)，所(suo)述(shu)(shu)偏(pian)(pian)振(zhen)(zhen)(zhen)(zhen)分(fen)(fen)(fen)(fen)(fen)(fen)光(guang)(guang)(guang)(guang)(guang)(guang)棱鏡(jing)放(fang)置在星模(mo)擬(ni)器(qi)準直(zhi)投影(ying)鏡(jing)頭的(de)入(ru)光(guang)(guang)(guang)(guang)(guang)(guang)口(kou)之(zhi)前；所(suo)述(shu)(shu)準直(zhi)光(guang)(guang)(guang)(guang)(guang)(guang)源位(wei)于(yu)(yu)偏(pian)(pian)振(zhen)(zhen)(zhen)(zhen)分(fen)(fen)(fen)(fen)(fen)(fen)光(guang)(guang)(guang)(guang)(guang)(guang)棱鏡(jing)正上(shang)方(fang)；所(suo)述(shu)(shu)第(di)(di)一偏(pian)(pian)振(zhen)(zhen)(zhen)(zhen)片(pian)放(fang)置在偏(pian)(pian)振(zhen)(zhen)(zhen)(zhen)分(fen)(fen)(fen)(fen)(fen)(fen)光(guang)(guang)(guang)(guang)(guang)(guang)棱鏡(jing)正上(shang)方(fang)，位(wei)于(yu)(yu)偏(pian)(pian)振(zhen)(zhen)(zhen)(zhen)分(fen)(fen)(fen)(fen)(fen)(fen)光(guang)(guang)(guang)(guang)(guang)(guang)棱鏡(jing)與準直(zhi)光(guang)(guang)(guang)(guang)(guang)(guang)源之(zhi)間；所(suo)述(shu)(shu)第(di)(di)二(er)偏(pian)(pian)振(zhen)(zhen)(zhen)(zhen)片(pian)放(fang)置在偏(pian)(pian)振(zhen)(zhen)(zhen)(zhen)分(fen)(fen)(fen)(fen)(fen)(fen)光(guang)(guang)(guang)(guang)(guang)(guang)棱鏡(jing)正下方(fang)，位(wei)于(yu)(yu)偏(pian)(pian)振(zhen)(zhen)(zhen)(zhen)分(fen)(fen)(fen)(fen)(fen)(fen)光(guang)(guang)(guang)(guang)(guang)(guang)棱鏡(jing)與下端棱鏡(jing)鏡(jing)架(jia)機械結(jie)構之(zhi)間；所(suo)述(shu)(shu)第(di)(di)三偏(pian)(pian)振(zhen)(zhen)(zhen)(zhen)片(pian)放(fang)置在偏(pian)(pian)振(zhen)(zhen)(zhen)(zhen)分(fen)(fen)(fen)(fen)(fen)(fen)光(guang)(guang)(guang)(guang)(guang)(guang)棱鏡(jing)正前方(fang)，位(wei)于(yu)(yu)偏(pian)(pian)振(zhen)(zhen)(zhen)(zhen)分(fen)(fen)(fen)(fen)(fen)(fen)光(guang)(guang)(guang)(guang)(guang)(guang)棱鏡(jing)與星模(mo)擬(ni)器(qi)準直(zhi)投影(ying)鏡(jing)頭的(de)入(ru)光(guang)(guang)(guang)(guang)(guang)(guang)口(kou)之(zhi)間；所(suo)述(shu)(shu)lcos顯示器(qi)件(jian)位(wei)于(yu)(yu)偏(pian)(pian)振(zhen)(zhen)(zhen)(zhen)分(fen)(fen)(fen)(fen)(fen)(fen)光(guang)(guang)(guang)(guang)(guang)(guang)棱鏡(jing)正后方(fang)。

2.根據權利要(yao)求1所(suo)述的(de)(de)一(yi)種具(ju)有偏振背景雜光(guang)(guang)抑制的(de)(de)動態星(xing)模(mo)(mo)擬(ni)(ni)(ni)器(qi)(qi)光(guang)(guang)學引(yin)擎(qing)，其特(te)征在(zai)于，所(suo)述偏振分(fen)光(guang)(guang)棱(leng)鏡(jing)(jing)(jing)的(de)(de)偏振分(fen)光(guang)(guang)膜層與(yu)星(xing)模(mo)(mo)擬(ni)(ni)(ni)器(qi)(qi)準(zhun)(zhun)(zhun)(zhun)(zhun)直(zhi)(zhi)投(tou)影(ying)鏡(jing)(jing)(jing)頭(tou)(tou)出射(she)(she)(she)光(guang)(guang)光(guang)(guang)軸(zhou)(zhou)方向(xiang)成45°角；所(suo)述準(zhun)(zhun)(zhun)(zhun)(zhun)直(zhi)(zhi)光(guang)(guang)源光(guang)(guang)軸(zhou)(zhou)與(yu)星(xing)模(mo)(mo)擬(ni)(ni)(ni)器(qi)(qi)準(zhun)(zhun)(zhun)(zhun)(zhun)直(zhi)(zhi)投(tou)影(ying)鏡(jing)(jing)(jing)頭(tou)(tou)出射(she)(she)(she)光(guang)(guang)光(guang)(guang)軸(zhou)(zhou)垂(chui)直(zhi)(zhi)，并且處于同一(yi)平(ping)面；所(suo)述lcos顯(xian)示器(qi)(qi)件的(de)(de)顯(xian)示部分(fen)幾何(he)中心位于星(xing)模(mo)(mo)擬(ni)(ni)(ni)器(qi)(qi)準(zhun)(zhun)(zhun)(zhun)(zhun)直(zhi)(zhi)投(tou)影(ying)鏡(jing)(jing)(jing)頭(tou)(tou)出射(she)(she)(she)光(guang)(guang)光(guang)(guang)軸(zhou)(zhou)上，顯(xian)示部分(fen)正對星(xing)模(mo)(mo)擬(ni)(ni)(ni)器(qi)(qi)準(zhun)(zhun)(zhun)(zhun)(zhun)直(zhi)(zhi)投(tou)影(ying)鏡(jing)(jing)(jing)頭(tou)(tou)的(de)(de)入光(guang)(guang)口；所(suo)述第一(yi)偏振片(pian)(pian)透(tou)光(guang)(guang)軸(zhou)(zhou)與(yu)星(xing)模(mo)(mo)擬(ni)(ni)(ni)器(qi)(qi)準(zhun)(zhun)(zhun)(zhun)(zhun)直(zhi)(zhi)投(tou)影(ying)鏡(jing)(jing)(jing)頭(tou)(tou)出射(she)(she)(she)光(guang)(guang)光(guang)(guang)軸(zhou)(zhou)在(zai)水平(ping)方向(xiang)垂(chui)直(zhi)(zhi)；所(suo)述第二(er)偏振片(pian)(pian)透(tou)光(guang)(guang)軸(zhou)(zhou)與(yu)星(xing)模(mo)(mo)擬(ni)(ni)(ni)器(qi)(qi)準(zhun)(zhun)(zhun)(zhun)(zhun)直(zhi)(zhi)投(tou)影(ying)鏡(jing)(jing)(jing)頭(tou)(tou)出射(she)(she)(she)光(guang)(guang)光(guang)(guang)軸(zhou)(zhou)在(zai)水平(ping)方向(xiang)垂(chui)直(zhi)(zhi)；所(suo)述第三偏振片(pian)(pian)透(tou)光(guang)(guang)軸(zhou)(zhou)與(yu)星(xing)模(mo)(mo)擬(ni)(ni)(ni)器(qi)(qi)準(zhun)(zhun)(zhun)(zhun)(zhun)直(zhi)(zhi)投(tou)影(ying)鏡(jing)(jing)(jing)頭(tou)(tou)出射(she)(she)(she)光(guang)(guang)光(guang)(guang)軸(zhou)(zhou)在(zai)豎直(zhi)(zhi)方向(xiang)垂(chui)直(zhi)(zhi)。

3.根據權(quan)利(li)要求1所(suo)(suo)述(shu)(shu)的一(yi)種具有偏(pian)(pian)(pian)(pian)振(zhen)(zhen)背景雜(za)(za)光(guang)(guang)(guang)(guang)(guang)(guang)抑制(zhi)的動態星模擬器(qi)光(guang)(guang)(guang)(guang)(guang)(guang)學引擎(qing)，其特征在(zai)于(yu)，所(suo)(suo)述(shu)(shu)準(zhun)直光(guang)(guang)(guang)(guang)(guang)(guang)源用(yong)(yong)于(yu)為(wei)光(guang)(guang)(guang)(guang)(guang)(guang)學引擎(qing)照(zhao)明，點亮lcos顯(xian)示(shi)器(qi)件；所(suo)(suo)述(shu)(shu)偏(pian)(pian)(pian)(pian)振(zhen)(zhen)分(fen)光(guang)(guang)(guang)(guang)(guang)(guang)棱(leng)鏡用(yong)(yong)于(yu)調(diao)制(zhi)照(zhao)明光(guang)(guang)(guang)(guang)(guang)(guang)源，將用(yong)(yong)于(yu)照(zhao)明lcos顯(xian)示(shi)器(qi)件的偏(pian)(pian)(pian)(pian)振(zhen)(zhen)光(guang)(guang)(guang)(guang)(guang)(guang)分(fen)光(guang)(guang)(guang)(guang)(guang)(guang)反(fan)射，并(bing)使成像(xiang)光(guang)(guang)(guang)(guang)(guang)(guang)束透射出(chu)射；所(suo)(suo)述(shu)(shu)lcos顯(xian)示(shi)器(qi)件用(yong)(yong)于(yu)顯(xian)示(shi)動態星圖，接受(shou)照(zhao)明光(guang)(guang)(guang)(guang)(guang)(guang)并(bing)調(diao)制(zhi)，以成像(xiang)光(guang)(guang)(guang)(guang)(guang)(guang)束反(fan)射出(chu)射；所(suo)(suo)述(shu)(shu)第(di)一(yi)偏(pian)(pian)(pian)(pian)振(zhen)(zhen)片(pian)用(yong)(yong)于(yu)對照(zhao)明光(guang)(guang)(guang)(guang)(guang)(guang)束起偏(pian)(pian)(pian)(pian)，起偏(pian)(pian)(pian)(pian)成為(wei)線偏(pian)(pian)(pian)(pian)振(zhen)(zhen)光(guang)(guang)(guang)(guang)(guang)(guang)以降(jiang)低進(jin)入偏(pian)(pian)(pian)(pian)振(zhen)(zhen)分(fen)光(guang)(guang)(guang)(guang)(guang)(guang)棱(leng)鏡后形(xing)成的成像(xiang)路徑雜(za)(za)光(guang)(guang)(guang)(guang)(guang)(guang)；所(suo)(suo)述(shu)(shu)第(di)二偏(pian)(pian)(pian)(pian)振(zhen)(zhen)片(pian)用(yong)(yong)于(yu)對非照(zhao)明光(guang)(guang)(guang)(guang)(guang)(guang)束消(xiao)光(guang)(guang)(guang)(guang)(guang)(guang)，阻止其到達機械(xie)表面(mian)產生散射偏(pian)(pian)(pian)(pian)振(zhen)(zhen)雜(za)(za)光(guang)(guang)(guang)(guang)(guang)(guang)，降(jiang)低非成像(xiang)光(guang)(guang)(guang)(guang)(guang)(guang)路雜(za)(za)光(guang)(guang)(guang)(guang)(guang)(guang)；所(suo)(suo)述(shu)(shu)第(di)三偏(pian)(pian)(pian)(pian)振(zhen)(zhen)片(pian)用(yong)(yong)于(yu)對出(chu)射成像(xiang)光(guang)(guang)(guang)(guang)(guang)(guang)檢(jian)偏(pian)(pian)(pian)(pian)，過濾內(nei)部未充分(fen)調(diao)制(zhi)的偏(pian)(pian)(pian)(pian)振(zhen)(zhen)雜(za)(za)光(guang)(guang)(guang)(guang)(guang)(guang)以及大角度散射雜(za)(za)光(guang)(guang)(guang)(guang)(guang)(guang)。

4.根(gen)(gen)據(ju)權(quan)利要求(qiu)1所(suo)述(shu)的(de)一(yi)(yi)種具有偏振(zhen)(zhen)背景雜光(guang)(guang)(guang)(guang)抑(yi)制(zhi)的(de)動態星模(mo)擬器(qi)光(guang)(guang)(guang)(guang)學引擎，其(qi)特征在(zai)于，根(gen)(gen)據(ju)公(gong)式和推導的(de)簡化對比(bi)度(du)公(gong)式，確定(ding)所(suo)述(shu)所(suo)述(shu)第一(yi)(yi)偏振(zhen)(zhen)片(pian)(pian)透光(guang)(guang)(guang)(guang)軸(zhou)方(fang)(fang)(fang)向與星模(mo)擬器(qi)準直(zhi)(zhi)(zhi)(zhi)投(tou)影(ying)鏡(jing)(jing)頭(tou)出射光(guang)(guang)(guang)(guang)光(guang)(guang)(guang)(guang)軸(zhou)在(zai)水平(ping)方(fang)(fang)(fang)向垂直(zhi)(zhi)(zhi)(zhi)；根(gen)(gen)據(ju)輻射傳輸公(gong)式，確定(ding)所(suo)述(shu)第二偏振(zhen)(zhen)片(pian)(pian)透光(guang)(guang)(guang)(guang)軸(zhou)方(fang)(fang)(fang)向與星模(mo)擬器(qi)準直(zhi)(zhi)(zhi)(zhi)投(tou)影(ying)鏡(jing)(jing)頭(tou)出射光(guang)(guang)(guang)(guang)光(guang)(guang)(guang)(guang)軸(zhou)在(zai)水平(ping)方(fang)(fang)(fang)向垂直(zhi)(zhi)(zhi)(zhi)；根(gen)(gen)據(ju)公(gong)式確定(ding)所(suo)述(shu)第三偏振(zhen)(zhen)片(pian)(pian)透光(guang)(guang)(guang)(guang)軸(zhou)方(fang)(fang)(fang)向與星模(mo)擬器(qi)準直(zhi)(zhi)(zhi)(zhi)投(tou)影(ying)鏡(jing)(jing)頭(tou)出射光(guang)(guang)(guang)(guang)光(guang)(guang)(guang)(guang)軸(zhou)在(zai)豎直(zhi)(zhi)(zhi)(zhi)方(fang)(fang)(fang)向垂直(zhi)(zhi)(zhi)(zhi)，與第一(yi)(yi)偏振(zhen)(zhen)片(pian)(pian)和第二偏振(zhen)(zhen)片(pian)(pian)透光(guang)(guang)(guang)(guang)軸(zhou)方(fang)(fang)(fang)向正交。

技術總結
一種具有偏振背景雜光抑制的動態星模擬器光學引擎，屬于動態星圖顯示領域，解決了現有的動態星模擬器光學引擎顯示星圖時存在背景雜光，影響暗弱星點模擬和降低顯示星圖對比度的問題。所述光學引擎包括：準直光源，用于為光學引擎照明；偏振分光棱鏡，用于調制和傳遞照明光和出射光；LCOS顯示器件，用于顯示動態星圖；星模擬器準直投影鏡頭，用于將顯示星圖投射至無窮遠供探測器觀測；第一偏振片，第二偏振片，第三偏振片，用于抑制因光源準直角、偏振分光膜層透射率、LCOS暗態漏光以及棱鏡鏡座機械表面散射而造成的偏振背景雜光。本發明適用于動態星圖顯示領域。

技術研發人員：彭御天,張杰瑞,孫高飛,劉顯著,徐達,劉石
受保護的技術使用者：長春理工大學
技術研發日：
技術公布日：2024/9/19