[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 P`6 T;|VDk  
DECLARE CYLINDER Cylinder001 fl _k5Q'&p  
BEGIN Cylinder001 !P/ ]o  
Position = 0 0 -0.3 S+H#^WS
t  
Vector_axis = 0 1 0 /+4Dq4{t)  
Radius = 0.2 6-va;G9Fc  
Length = 60 fZ$
<'(t  
Surface = SURFACE_LAMP QT{$2 7;  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 ;wND?:  
xn)FE4  
Color = 255 0 0 q# gZ\V$I  
END S+>&O3m  
:,rD5aOQ  
DECLARE SOURCE src IIeEe7%#  
H
t+ng  
BEGIN src vE/g{~[5  
geometry = Cylinder001 #b\&Md|;  
emission = LAMBERT w8:F^{  
power = 200 K+2bNKZ0  
unit = Lumen o_/C9[:  
spectrum = BLACKBODY 5000 Gp9>R~$  
END 5&7)hMppI  
DECLARE CURVE2D_CONIC MyCurve2DConic001 !OWVOq8  
BEGIN MyCurve2DConic001 ac>}$Uw)  
Position = 0 -0.8 8=gr F  
Orientation = 1 0 r4t|T^{sl  
Radius = 1 }B
w=2 ~  
Conic = 0 ]Vhhx`0  
XMin = -1 T[a1S?_*T  
XMax = 1 6nt$o)[  
END 8(ny^]v|  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 RK(uC-l  
BEGIN MyVolumeExtrusion001 7p3 ;b"'  
Position = 0 30 0 AKx\U?ei7  
Vector_I = 1 0 0 }D dg  
Vector_J = 0 0 1 ;hF>iw  
Generatrix = MYCURVE2DCONIC001  s=#IoNh  
Length = 30 @dX0gHU[c  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 asP>(Li  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 RyD2LAf)J  
Color = 255 155 255 WhE5u&`  
END j)Kk:BFFY
 
+A W6 >yV`  

粗看了一下： }^G'oR1LF  
光源定义了光强、散射方式、光谱， gv `jeN  
怎么没有定义光源的出光角度？