[求助]请教：光源旁边加反光罩后，在罩内无光线出来？？ [复制链接]

#define SURFACE_LAMP PERFECT_MIRROR 34.00 1`m ~c  
DECLARE CYLINDER Cylinder001 8\y%J!b  
BEGIN Cylinder001 o)?"P;UhJX  
Position = 0 0 -0.3 [(`T*c.#.X  
Vector_axis = 0 1 0 .d9VV&  
Radius = 0.2 i[^?24~ c  
Length = 60 P,~a'_w:|D  
Surface = SURFACE_LAMP &tQ,2RT  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 ;oULtQ  
s i
v KXd  
Color = 255 0 0 T |'Ur#  
END t_,iV9NrZ  
8{JTR|yB  
DECLARE SOURCE src 4lb3quY$Us  
\Ul*Nsw  
BEGIN src & HphE2 h  
geometry = Cylinder001 ,h5.Si>  
emission = LAMBERT *u7C){)gr[  
power = 200 0c7&J?"wE  
unit = Lumen P}&7G-  
spectrum = BLACKBODY 5000 N!"GwH  
END 1w+&Y;d|  
DECLARE CURVE2D_CONIC MyCurve2DConic001 h:#  
BEGIN MyCurve2DConic001 m3 (fr  
Position = 0 -0.8 [4Glt>Nj>  
Orientation = 1 0 `
Xmf4  
Radius = 1  mbd
  
Conic = 0 ))G%C6-  
XMin = -1 ,A =%!p+  
XMax = 1 lbT<HWzNH  
END 0'BR Sa<  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 XOgX0cRC4  
BEGIN MyVolumeExtrusion001 x;Dr40wD@y  
Position = 0 30 0 MY9?957F  
Vector_I = 1 0 0 m]N4.J  
Vector_J = 0 0 1 9qwVBu ;  
Generatrix = MYCURVE2DCONIC001 &!/L^Y*+  
Length = 30 1uMnlimr  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 uTP=kgYqJ  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 )J~Qx-jG  
Color = 255 155 255 l%fnGe` _  
END x gaN0!  
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描述:图

图片:未标题-1 拷贝.jpg

粗看了一下： 8-juzL}  
光源定义了光强、散射方式、光谱， kfm8F8sxl  
怎么没有定义光源的出光角度？