[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 k M/:
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DECLARE CYLINDER Cylinder001 -U2Su|:\N8  
BEGIN Cylinder001 z -?\b^  
Position = 0 0 -0.3 l-XfUjJ  
Vector_axis = 0 1 0 &E]) sJ0  
Radius = 0.2 |B(,53  
Length = 60 NuO@Nr  
Surface = SURFACE_LAMP 12 )  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 =#2%[kGq  
tV=Qt[|@  
Color = 255 0 0 >J9Qr#=H2  
END ,O:4[M!$w  
a0ms9%Y;Q[  
DECLARE SOURCE src ]4t1dVD  
>7WT4l)7!b  
BEGIN src d[h=<?E5  
geometry = Cylinder001 OFohyy(  
emission = LAMBERT !S<p"   
power = 200 )P7oL.)  
unit = Lumen QO$18MBcc  
spectrum = BLACKBODY 5000 .B^tEBGVD  
END Oyb9 ql^  
DECLARE CURVE2D_CONIC MyCurve2DConic001 Idu'+O4  
BEGIN MyCurve2DConic001 e[fld,s  
Position = 0 -0.8 0Y0z7A:  
Orientation = 1 0 _Q #[IH9  
Radius = 1 9vi+[3s/=;  
Conic = 0 `V/kM0A5  
XMin = -1 bSTori5  
XMax = 1 \/dOv

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END <1vogUDW  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 v1$}[&/  
BEGIN MyVolumeExtrusion001 fbI5!i#lz  
Position = 0 30 0 x6aVNH=  
Vector_I = 1 0 0 )E",)}Nh  
Vector_J = 0 0 1 vo#$xwm1  
Generatrix = MYCURVE2DCONIC001 *=md!^x`  
Length = 30 9F3aT'3#!  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 ~p+ `pwjY1  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 l )r^|9{  
Color = 255 155 255 |xb;#ruR6  
END .5HD i-  
\HD:#a  

粗看了一下： Yi-,Pb?   
光源定义了光强、散射方式、光谱， "
SuG6!k3  
怎么没有定义光源的出光角度？