[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 !{lb#  
DECLARE CYLINDER Cylinder001  B4ze$#  
BEGIN Cylinder001 our5k
 
Position = 0 0 -0.3 iL1so+di  
Vector_axis = 0 1 0 ix`xdVj`  
Radius = 0.2 eqCB2u"Jq  
Length = 60 e)"cm;BJ^P  
Surface = SURFACE_LAMP v4aGL<SO  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 pBkPn+@  
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Color = 255 0 0 T]2q >N  
END kzXW<V9  
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DECLARE SOURCE src V485Yn!$(  
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BEGIN src Cx~z^YP'  
geometry = Cylinder001 JH#+E04#  
emission = LAMBERT IR
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power = 200 $*R9LPpk+  
unit = Lumen m=V2xoMw6  
spectrum = BLACKBODY 5000 c3dZ1v  
END BW 7[JD  
DECLARE CURVE2D_CONIC MyCurve2DConic001 _Hk`e}}  
BEGIN MyCurve2DConic001 o+&sodt|`  
Position = 0 -0.8 b87o6"j  
Orientation = 1 0 H l@rS  
Radius = 1 ppjrm
 
Conic = 0 *p^MAk9=  
XMin = -1 vcHDFi  
XMax = 1 ?dYDfyFfB  
END v( B4Bz2  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 <n{9pZ5.  
BEGIN MyVolumeExtrusion001 jBbc$|O4SY  
Position = 0 30 0 oP6G2@3P/  
Vector_I = 1 0 0 Z#04 ]  
Vector_J = 0 0 1 4r*6fJ*bJ  
Generatrix = MYCURVE2DCONIC001 :JYOC+#q7  
Length = 30 /2@@v|QL  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 P.Bk-#}$  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 )LG/n  
Color = 255 155 255 p pq#5t^[)  
END xT/&'$@{)  
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粗看了一下： X {$gdz8S9  
光源定义了光强、散射方式、光谱， z!%}0  
怎么没有定义光源的出光角度？