[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 ~4^e a  
DECLARE CYLINDER Cylinder001 9mnON~j5  
BEGIN Cylinder001 oN$ZZk R  
Position = 0 0 -0.3 6vA5L_  
Vector_axis = 0 1 0 9VByFQgM  
Radius = 0.2 'SieZI
m)  
Length = 60 'KL(A-}!  
Surface = SURFACE_LAMP -Gpj^aBU  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 p\WUk@4  
\f  LBw0  
Color = 255 0 0 la4,Z  
END ah92<'ix  
cTnbI4S;  
DECLARE SOURCE src _~kcr5  
fUXp)0O  
BEGIN src US|vYd}u+  
geometry = Cylinder001 NIfc/%  
emission = LAMBERT #r:`bQ0;  
power = 200 wj^I1;lO  
unit = Lumen K)?^
b|D  
spectrum = BLACKBODY 5000 Vk (bU=w  
END 6&Dvp1`m  
DECLARE CURVE2D_CONIC MyCurve2DConic001 ,gvX
~k  
BEGIN MyCurve2DConic001 <@A^C$g  
Position = 0 -0.8 Lk9>7xY  
Orientation = 1 0 .%rR  
Radius = 1 ttnXEF  
Conic = 0 4.'EEuRw\}  
XMin = -1 WI6E3,ejB1  
XMax = 1 M\&~Dmd  
END )rj mJ  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 @nP}q!y  
BEGIN MyVolumeExtrusion001 }WbN)  
Position = 0 30 0 l.x }I"tf  
Vector_I = 1 0 0 FQFENq''B  
Vector_J = 0 0 1 LXLDu2/@  
Generatrix = MYCURVE2DCONIC001 |pqpF?h5|  
Length = 30 cPcV[6)5K9  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 j,xPN=+hT  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 9pcf jx..  
Color = 255 155 255 ~@D%qbN  
END O+?zn:  
,[\(U!Z7:%  

描述:图

图片:未标题-1 拷贝.jpg

粗看了一下： e:LZs0  
光源定义了光强、散射方式、光谱， 2^6TrZA7M6  
怎么没有定义光源的出光角度？