[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 0*AlLwO  
DECLARE CYLINDER Cylinder001 #_7c>gn  
BEGIN Cylinder001 qnS7z%H8  
Position = 0 0 -0.3 z8!u6odu %  
Vector_axis = 0 1 0 i4pJIb  
Radius = 0.2 *Qf}4a0  
Length = 60 BE+YqT  
Surface = SURFACE_LAMP t<k8.9 M$  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 Tk!b`9
 
~ZNhU;%YW  
Color = 255 0 0 5`uS<[vA  
END 9F+bWo_m  
G6,8Xwk  
DECLARE SOURCE src 1CM1u+<iZ  
NN:TT\!v  
BEGIN src  KC(Ug4  
geometry = Cylinder001 3?XLHMxW  
emission = LAMBERT bT8UmR98  
power = 200 I;v`o{  
unit = Lumen V[mQ;:=  
spectrum = BLACKBODY 5000 :A'!u r=\  
END 0?7uqS#L  
DECLARE CURVE2D_CONIC MyCurve2DConic001 )2$_:Ek  
BEGIN MyCurve2DConic001 .'a|St  
Position = 0 -0.8 xY S%dLE"  
Orientation = 1 0 [GP(r  
Radius = 1 aOHCr>po,  
Conic = 0 H_j<%VW  
XMin = -1 |gVO Iq  
XMax = 1 X]fw9tZ  
END
@ 7?_Yw  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 RI(uG-Y  
BEGIN MyVolumeExtrusion001 SRTpE,  
Position = 0 30 0 [:QMn
J  
Vector_I = 1 0 0 nX~MoWH1  
Vector_J = 0 0 1 :#/bA&  
Generatrix = MYCURVE2DCONIC001 %p9bl ,x  
Length = 30 a 98  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 *lK4yI*%o  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 ]#$kA9  
Color = 255 155 255 Q]wM/7  
END C6VoOT)\  
\uk#pL  

描述:图

图片:未标题-1 拷贝.jpg

粗看了一下： yj~"C$s  
光源定义了光强、散射方式、光谱， U!/nD~A  
怎么没有定义光源的出光角度？