[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 !*
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DECLARE CYLINDER Cylinder001 1V-sibE  
BEGIN Cylinder001 IEY\l{s  
Position = 0 0 -0.3 &t}6sD9o  
Vector_axis = 0 1 0 fni7HBV?  
Radius = 0.2 zZP&`#TAy  
Length = 60 XW:%YTv  
Surface = SURFACE_LAMP BzTzIo5  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 )1f.=QZN^;  
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Color = 255 0 0 o0TB>DX$`  
END %`lLX/4~  
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DECLARE SOURCE src 68~5Dx  
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BEGIN src e^UUR-K%
 
geometry = Cylinder001 py6O\` \  
emission = LAMBERT 5m\)82s  
power = 200 %2'Y@AX`  
unit = Lumen i:H]Sb)<b  
spectrum = BLACKBODY 5000 zICrp  
END TWdhl9Ot  
DECLARE CURVE2D_CONIC MyCurve2DConic001 3*-!0  
BEGIN MyCurve2DConic001 <DhuY/o  
Position = 0 -0.8 cCcJOhk|d  
Orientation = 1 0 (&M,rW~Qxs  
Radius = 1 l@`n4U.Gwl  
Conic = 0 S~M/!Xb  
XMin = -1 kArF Gb2c  
XMax = 1 2Hk21y\  
END =69sWcC8  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 ?(M]'ia{  
BEGIN MyVolumeExtrusion001 !ZY1
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Position = 0 30 0 {"O-/* f+(  
Vector_I = 1 0 0 .Dy2O*`  
Vector_J = 0 0 1 I_|W'%N]  
Generatrix = MYCURVE2DCONIC001 V!s#xXD}  
Length = 30 4@0Z<8Mo  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 B[5<&  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 &UAYYH  
Color = 255 155 255 pL: r\Y:R  
END TJ|do`fw>  
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描述:图

图片:未标题-1 拷贝.jpg

粗看了一下： +ijxv  
光源定义了光强、散射方式、光谱， obGvd6\  
怎么没有定义光源的出光角度？