[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 .q1y)l-^Z  
DECLARE CYLINDER Cylinder001 -F_cBu81V  
BEGIN Cylinder001 oX7_v_:J\R  
Position = 0 0 -0.3 &hih p"  
Vector_axis = 0 1 0 3^5h:OaT  
Radius = 0.2 \>x1#Vr>#V  
Length = 60 KW$.Yy  
Surface = SURFACE_LAMP 8:[ l1d86  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20  \>||  
y?U@F/^}N  
Color = 255 0 0 ae" o|Q  
END 29cx(  
2MmHO2  
DECLARE SOURCE src (2UA,  
&2S-scP  
BEGIN src =cO5Nt  
geometry = Cylinder001 5zh6l+S[  
emission = LAMBERT ;YSe:m*  
power = 200 _]-8gr-T  
unit = Lumen HJBGxyw  
spectrum = BLACKBODY 5000 Kp^"<%RT  
END Ve${g`7&  
DECLARE CURVE2D_CONIC MyCurve2DConic001 Z_fwvcZ?05  
BEGIN MyCurve2DConic001 'T$Cw\F&  
Position = 0 -0.8 maeQ'Sv_&  
Orientation = 1 0 :{4C2qK>  
Radius = 1 mE_%  
Conic = 0 *6eJmbFG  
XMin = -1 =CO)
Q2  
XMax = 1 Bh'!aipk  
END HB`'S7Q  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 `NsQ&G  
BEGIN MyVolumeExtrusion001 TQb@szp:|  
Position = 0 30 0 )Ly~\*  
Vector_I = 1 0 0 -v-kFzu  
Vector_J = 0 0 1 HEAW](s  
Generatrix = MYCURVE2DCONIC001 &n6L;y-  
Length = 30 <-fvYer  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 'HJ+)[0X*  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 mln4Vl(l2M  
Color = 255 155 255 ZjY,k  
END m.!LL]]  

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描述:图

图片:未标题-1 拷贝.jpg

粗看了一下： 4w'&:k47
 
光源定义了光强、散射方式、光谱， d}tmZ*q  
怎么没有定义光源的出光角度？