[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 +ID\u <?
 
DECLARE CYLINDER Cylinder001 puJB&u"4L  
BEGIN Cylinder001 +i!5<nn  
Position = 0 0 -0.3 p"#\E0GM  
Vector_axis = 0 1 0 00.x*v  
Radius = 0.2 Jup)A`64  
Length = 60 {G Jl<G1  
Surface = SURFACE_LAMP 6q\*{_CPB  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 @uH!n~QV  
0muC4  
Color = 255 0 0 4
/Y?eUQ  
END (Kwqa"Hk4{  
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DECLARE SOURCE src 1!KROes4  
F
)(^c  
BEGIN src X>Vc4n<}  
geometry = Cylinder001 X58U>4a  
emission = LAMBERT vY-CXWC7  
power = 200 `^Vd*  
unit = Lumen n&njSj/  
spectrum = BLACKBODY 5000 )
Cl>%9  
END O|V0W
iY<  
DECLARE CURVE2D_CONIC MyCurve2DConic001 _Xt/U>N  
BEGIN MyCurve2DConic001 >!t3~q1Cn  
Position = 0 -0.8 dMH_:jb  
Orientation = 1 0 |gA@WV-%  
Radius = 1 Zp>v  
Conic = 0 9h amxi  
XMin = -1 `*3A7y  
XMax = 1 AP=h*1udk  
END n.&7lg^X  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 A$=ny6  
BEGIN MyVolumeExtrusion001 pL"{Uqi  
Position = 0 30 0 k1<^Ept  
Vector_I = 1 0 0 orFwy!  
Vector_J = 0 0 1 ^e8xg=8(  
Generatrix = MYCURVE2DCONIC001 ]~aj  
Length = 30 4<i#TCGex3  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 WR{m?neE_N  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 uQIPnd(V  
Color = 255 155 255 >$JE!.p%o  
END )2Ei<  
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粗看了一下： I=kqkuW  
光源定义了光强、散射方式、光谱， W3,r@mi^s7  
怎么没有定义光源的出光角度？