[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 9f&C  
DECLARE CYLINDER Cylinder001 v7iuL6jl  
BEGIN Cylinder001 X]wRwG  
Position = 0 0 -0.3 ;c4gv,q@  
Vector_axis = 0 1 0 e[&L9U6GW-  
Radius = 0.2 \$*7 >`k  
Length = 60 mP0yk
|  
Surface = SURFACE_LAMP -uMSe~  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 ^/\Of{OZ-  
`
$W_R[  
Color = 255 0 0
D-5VC9{  
END Rb%8)t x  
G 8g<>d{j  
DECLARE SOURCE src $W!!wN=B  
B?'#4J  
BEGIN src inh=WUEW  
geometry = Cylinder001 eHn7iuS8  
emission = LAMBERT A v2 08}Y  
power = 200 }bdmomV  
unit = Lumen e?JW   
spectrum = BLACKBODY 5000 -f%'  
END _kU:Z  
DECLARE CURVE2D_CONIC MyCurve2DConic001 DAcQz4T`  
BEGIN MyCurve2DConic001 mID"^NOi#  
Position = 0 -0.8 KKiE@_z  
Orientation = 1 0 n%-R[vW  
Radius = 1 4^WpS/#4  
Conic = 0 .Le?T&_  
XMin = -1 G Uon/G8  
XMax = 1 =cm~vDl[  
END ST:A<Da"  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 [lWQ'DZ  
BEGIN MyVolumeExtrusion001 $$Oey)*  
Position = 0 30 0 0 q}*S~  
Vector_I = 1 0 0 +nXK-g;)'  
Vector_J = 0 0 1 xv(9IEjt0  
Generatrix = MYCURVE2DCONIC001 "Zl5<  
Length = 30 {`LU+  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 n `&/D  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 .1KhBgy^K  
Color = 255 155 255 S- pV_Ff  
END ~<_2WQ/$  
HCyv]LR  

描述:图

图片:未标题-1 拷贝.jpg

粗看了一下： $c0h.t  
光源定义了光强、散射方式、光谱， =Xi07_8Ic<  
怎么没有定义光源的出光角度？