[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 1O#
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DECLARE CYLINDER Cylinder001 *y+N-uq  
BEGIN Cylinder001 0Q7teXRM  
Position = 0 0 -0.3 cI Sugk~  
Vector_axis = 0 1 0 &}'FC7}  
Radius = 0.2 :g%hT$,]3b  
Length = 60 rn$G.SMgz  
Surface = SURFACE_LAMP ^fiJxU  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 1NAGGr00  
n;@.eC,T/  
Color = 255 0 0 X<%`  
END $e~MKLd  
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DECLARE SOURCE src ]OSq}ul  
>&DC[)28  
BEGIN src ! k[JP+;  
geometry = Cylinder001 N \~}`({  
emission = LAMBERT ~'V&[]nh8  
power = 200 {|d28!8w  
unit = Lumen H#S`m  
spectrum = BLACKBODY 5000 aD(3.=[R  
END ,i jB3J  
DECLARE CURVE2D_CONIC MyCurve2DConic001 mtg=v@~  
BEGIN MyCurve2DConic001 yhkKakg,)  
Position = 0 -0.8 DPlDuUOd  
Orientation = 1 0
{/FdrS  
Radius = 1 M}! qH.W  
Conic = 0 +/[L-&,  
XMin = -1 /1v:eoF;  
XMax = 1 <NEz{1Z  
END %aI,K0\  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 soRYM  
BEGIN MyVolumeExtrusion001 ?I8r2M]  
Position = 0 30 0 X }`
o9]y  
Vector_I = 1 0 0 d8uDSy  
Vector_J = 0 0 1 !4a#);`G  
Generatrix = MYCURVE2DCONIC001 **\?-*c=U  
Length = 30 
xk  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 EJP]E)  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 %Z+**>1J  
Color = 255 155 255  &1f3e  
END aX~Jk >a0  
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描述:图

图片:未标题-1 拷贝.jpg

粗看了一下： tot~\S  
光源定义了光强、散射方式、光谱， qe'ssX;  
怎么没有定义光源的出光角度？