[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
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DECLARE CYLINDER Cylinder001 jcI&w#re  
BEGIN Cylinder001 (y M^  
Position = 0 0 -0.3 Er{#ziN+  
Vector_axis = 0 1 0 $ZNu+tn Y  
Radius = 0.2 ~i21%$  
Length = 60 s%2v3eb  
Surface = SURFACE_LAMP e0J6Ae4V[  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 =e8bNg  
%/YcL6o(  
Color = 255 0 0 bks/`rIA  
END KyzFnVH3)  
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DECLARE SOURCE src 1P(|[W1  
!}4MN:r  
BEGIN src ({NAMc*  
geometry = Cylinder001 +e-G,%>9  
emission = LAMBERT ZeEWp3vW  
power = 200 "h|'}7p  
unit = Lumen OX"j#  
spectrum = BLACKBODY 5000 UQ[B?jc  
END i| ZceX/  
DECLARE CURVE2D_CONIC MyCurve2DConic001 r" K':O6y  
BEGIN MyCurve2DConic001 cZ<A0  
Position = 0 -0.8 n_B"-n  
Orientation = 1 0 ;s~X  
Radius = 1 .58qL-iC  
Conic = 0 VwEb7v,^0\  
XMin = -1 M4d47<'*~  
XMax = 1 fPrLM'  
END =&},;VOh  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 4T?h  
BEGIN MyVolumeExtrusion001 b
O&7-Z~:=  
Position = 0 30 0 eYC^4g%l(  
Vector_I = 1 0 0 zLF?P3^  
Vector_J = 0 0 1 9 Rx s  
Generatrix = MYCURVE2DCONIC001 QMsHC%l3b  
Length = 30 l27\diKPJ  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 1]}#
)-  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 ki{3IEOr}  
Color = 255 155 255 ;A'":vXmc  
END fPR$kch  
MCT'Nw@A  

粗看了一下： jM&r{^(  
光源定义了光强、散射方式、光谱， 1&/FG(*/  
怎么没有定义光源的出光角度？