[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 LQ~|VRRX<  
DECLARE CYLINDER Cylinder001 Cu+p!hV  
BEGIN Cylinder001 |?88EG@05  
Position = 0 0 -0.3 76w[X=Fv  
Vector_axis = 0 1 0 2PQBUq  
Radius = 0.2 _x.2&S89  
Length = 60 <W0(!<U  
Surface = SURFACE_LAMP {bXN[=j  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 l!,tssQ  
M+&~sX*a  
Color = 255 0 0 a[K&;)  
END ql@2<V{  
%r[`HF>  
DECLARE SOURCE src >>{):r Z  
^&<M""Z  
BEGIN src li%@HdA!  
geometry = Cylinder001 .s<0}<Aq>  
emission = LAMBERT U;bx^2<m  
power = 200 QP'sS*saJ  
unit = Lumen ]0R*F30]  
spectrum = BLACKBODY 5000 !}6'vq  
END @|:fm() <  
DECLARE CURVE2D_CONIC MyCurve2DConic001 E
3'I;  
BEGIN MyCurve2DConic001 xo@1((|z  
Position = 0 -0.8 )x!q;^Js9A  
Orientation = 1 0 5~h)pt47  
Radius = 1 v\w*VCjoV  
Conic = 0 11l=zv  
XMin = -1 ]|3hK/  
XMax = 1 U '{PpZ  
END o+|>D&CW%  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 Kl.*Q  
BEGIN MyVolumeExtrusion001 w,IJ44f ^%  
Position = 0 30 0 x_7$g<n  
Vector_I = 1 0 0 ;}Jv4Z  
Vector_J = 0 0 1 %X_A#9  
Generatrix = MYCURVE2DCONIC001 7u"Q1n(h/  
Length = 30 7FH-l(W  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 m@<,bZkl  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 sO) H#G  
Color = 255 155 255 I q|'#hs  
END j*QdD\)  
:?f+*  

描述:图

图片:未标题-1 拷贝.jpg

粗看了一下： 0VvY(j:hp  
光源定义了光强、散射方式、光谱， D*@'%<?  
怎么没有定义光源的出光角度？