[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 !lL `L\  
DECLARE CYLINDER Cylinder001 AXte
&l=M  
BEGIN Cylinder001 9-q> W  
Position = 0 0 -0.3 [tJn!cMs  
Vector_axis = 0 1 0
r|*_KQq  
Radius = 0.2 4)k-gKS*  
Length = 60 hGw}o,g  
Surface = SURFACE_LAMP .5!`wwVi  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 !sEhjJV^7  
\P9ms?((A  
Color = 255 0 0 I= <eCv  
END 9QB,%K_:4  
@Lf&[_  
DECLARE SOURCE src 94dd )/a  
C96*,.j~'  
BEGIN src 2gkN
\w6zQ  
geometry = Cylinder001 YEaT_zWG0  
emission = LAMBERT &0y`Gt  
power = 200
}2e s"  
unit = Lumen i^iu#WC  
spectrum = BLACKBODY 5000 BY[7`@  
END 0%[IG$u)|  
DECLARE CURVE2D_CONIC MyCurve2DConic001 -P|claO0  
BEGIN MyCurve2DConic001 L[D+=  
Position = 0 -0.8 ! }e75=x  
Orientation = 1 0 #\}FQl6  
Radius = 1 Ai[@2AyU  
Conic = 0 Ri_2@U-  
XMin = -1 3
Og}_  
XMax = 1 @~|;/OY>"  
END dL'oKh,  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 YG8C<g6E7  
BEGIN MyVolumeExtrusion001 w}OBp^V^  
Position = 0 30 0 !1i-"rR  
Vector_I = 1 0 0 umq6X8K  
Vector_J = 0 0 1 %~M*<pN  
Generatrix = MYCURVE2DCONIC001
:*|Ua%L_  
Length = 30 *<67h*|)  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 C"**>OGe  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 S#8)N`  
Color = 255 155 255 WrDFbcH  
END B'(zhjV  
9oGcbD4*  

描述:图

图片:未标题-1 拷贝.jpg

粗看了一下： LkzA_|8:D  
光源定义了光强、散射方式、光谱， I9+h-t  
怎么没有定义光源的出光角度？