[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 B"@3Qav3  
DECLARE CYLINDER Cylinder001 SH00
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BEGIN Cylinder001 TbUouoc  
Position = 0 0 -0.3 u{6b>c|,X  
Vector_axis = 0 1 0 y:m ;_U,%c  
Radius = 0.2 bPlqS+ai_  
Length = 60 u/I|<NAC,  
Surface = SURFACE_LAMP pZ@)9c  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 ^n@dC?  
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Color = 255 0 0 Xxz_h*  
END +E7Os|m  
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DECLARE SOURCE src mm l`,t8  
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BEGIN src (}#8$ )  
geometry = Cylinder001 A"V($:>U  
emission = LAMBERT $ouw*|<  
power = 200 InAx;2'A:  
unit = Lumen I*SrKZb  
spectrum = BLACKBODY 5000 Qf>$'C(7!a  
END @U 6jd4?)  
DECLARE CURVE2D_CONIC MyCurve2DConic001 !:GlxmtoW?  
BEGIN MyCurve2DConic001 vGX}zzto  
Position = 0 -0.8 '1 }ybSG  
Orientation = 1 0 w YEkWB^  
Radius = 1 ^?
~WIS  
Conic = 0 BQ;F`!Hx?  
XMin = -1 pef)c,U$  
XMax = 1 pkKcTY1Fx  
END }x9D;%)/  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 cm'`u&S  
BEGIN MyVolumeExtrusion001 Jn#05Z
 
Position = 0 30 0
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Vector_I = 1 0 0 ,(@JNtx  
Vector_J = 0 0 1 TpSv7kT]  
Generatrix = MYCURVE2DCONIC001 WXj iKW(  
Length = 30 #
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Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 Xa
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Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 T[L7-5U0  
Color = 255 155 255 \ ";^nk*  
END 2LTMt?  
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粗看了一下： L>>RboR}  
光源定义了光强、散射方式、光谱， Pe,:FIp,  
怎么没有定义光源的出光角度？