[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 *Dr-{\9  
DECLARE CYLINDER Cylinder001 tydD~a  
BEGIN Cylinder001 ~m^.&mv3/  
Position = 0 0 -0.3 6@pPaq6  
Vector_axis = 0 1 0 E"!I[  
Radius = 0.2 B6)d2O9C  
Length = 60 !mNXPqnN  
Surface = SURFACE_LAMP V4cCu~(3;~  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 n>]`8+a~%X  
} ).rD  
Color = 255 0 0 )1Rn;(j9Re  
END z@\C/wX  
5wM*(H^c[  
DECLARE SOURCE src WP,Ll\K)7  
4Q2=\-KFj  
BEGIN src Y<('G5A  
geometry = Cylinder001 SS?^-BI  
emission = LAMBERT 9(?9yFbj5  
power = 200 W7I.S5  
unit = Lumen _@I8B  
spectrum = BLACKBODY 5000 >ZMB}pt`  
END +`pS 7d  
DECLARE CURVE2D_CONIC MyCurve2DConic001 E(DNK  
BEGIN MyCurve2DConic001 om%L>zfB  
Position = 0 -0.8 ~(E.$y7P  
Orientation = 1 0 KL:x!GsV5e  
Radius = 1 ,lK=m~  
Conic = 0 b&:>v9U  
XMin = -1 a12Q/K  
XMax = 1 [fF0Qa-  
END `.3!  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 u6o:~=WwM  
BEGIN MyVolumeExtrusion001 r0ml|PX  
Position = 0 30 0 , 'WhF-  
Vector_I = 1 0 0 VC%{qal;q  
Vector_J = 0 0 1 @Qw~z0PE<l  
Generatrix = MYCURVE2DCONIC001 8:9m< ^4S(  
Length = 30 [J0f:&7\  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 Ewjzm,2  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 f,QoA  
Color = 255 155 255 Vfkm{*t)  
END 9>gxJ7pY  
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61  

粗看了一下： vW`Dy8`06  
光源定义了光强、散射方式、光谱， Lhg4fuos@)  
怎么没有定义光源的出光角度？