[原創(chuàng)]雜散光中的關(guān)鍵面分析 [復(fù)制鏈接]

在FRED中通過(guò)倒追和正追的方式確定光機(jī)系統(tǒng)的關(guān)鍵面、照明面和重要面。照明面是指光學(xué)系統(tǒng)中被外界雜散光源照亮的面;關(guān)鍵面是可以從探測(cè)中看到的面;關(guān)鍵面和照明面的重疊面即為重要面。重要面是光機(jī)系統(tǒng)中一次雜散輻射的主要來(lái)源，雜散光的抑制也就是努力減少重要面的數(shù)量。 u$*>`Xe6  
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Node    Name    Universe    Detector         lK(Fg  
6    Geometry.fastcass.Primary mirror.Reflecting Surface    8.73949821062508    .339134565809722         H3KTir"on  
7    Geometry.fastcass.Primary mirror.Back Surface    0    0         gS9>N/b|  
8    Geometry.fastcass.Primary mirror.Edge    0    0         Z~u9VYi!  
9    Geometry.fastcass.Primary mirror.Hole    0    1.00188578326391E-04         EbK0j?  
11    Geometry.fastcass.Secondary mirror.Reflecting Surface    8.71700830771184    .420485262312074         P,z:Z|}8  
12    Geometry.fastcass.Secondary mirror.Back Surface    0    0         9;=dxWf   
13    Geometry.fastcass.Secondary mirror.Edge    0    4.83222296869994E-09         :E_a0!'  
16    Geometry.fastcass.dewar.FPA.detector array    6.28915267493816    1.09779504189775E-02         +RDJY(Y$  
18    Geometry.fastcass.dewar.dewar window.Surface 1    8.70787200780954    1.01116317462709         M0'v&g  
19    Geometry.fastcass.dewar.dewar window.Surface 2    8.70787200780954    1.0111548796955         {^ec(EsO#  
20    Geometry.fastcass.dewar.dewar window.Edge    0    8.29493159668308E-06         -,#+`>w  
22    Geometry.fastcass.dewar.outer wall.Surf 1    0    4.61988409432715E-05         + ,4" u  
24    Geometry.fastcass.dewar.retaining ring.Surf 2    0    5.38379092582642E-05         ~(X(&  
27    Geometry.main barrel.Surf 3    1.45194696071729E-02    4.48783425373457E-03         mOBACTY^  
29    Geometry.Primary baffle.Surf 3    1.44803828118383E-06    .597464630934777         nWYCh7  
31    Geometry.Secondary baffle.Surf 3    .969627358028687    .137673353852238         cDkV;$  
32    Geometry.Secondary baffle.Surf 4    1.1502279482165E-12    1.42111455012594E-03         Lxe^v/LsT  
33    Geometry.Secondary baffle.Surf 5    .727220518519163    6.21692034227466E-05         Oe!6){OG)  
36    Geometry.Secondary struts.strut a.Surf 6    .97011784785664    1.11300844081723E-02         Va<eusl