[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 N*lq)@smq  
DECLARE CYLINDER Cylinder001 Rmn|"ZK  
BEGIN Cylinder001 4G@vO{$  
Position = 0 0 -0.3 l`gRw4/$  
Vector_axis = 0 1 0 Zo;@StN3}T  
Radius = 0.2 }`IN5NdYp  
Length = 60 @o44b!i  
Surface = SURFACE_LAMP q uv`~qn  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 R/b)hP~  
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Color = 255 0 0 JQsS=m7Et  
END } ~=53$+  
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DECLARE SOURCE src Zx55mSfx:  
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BEGIN src GfJm&'U&  
geometry = Cylinder001 _"a(vfl#  
emission = LAMBERT L,waQk / @  
power = 200 KHcfP7  
unit = Lumen E`XUK,b  
spectrum = BLACKBODY 5000 e1}h|HLj  
END K,|Gtaa~  
DECLARE CURVE2D_CONIC MyCurve2DConic001 h}z^NX  
BEGIN MyCurve2DConic001 !;'U5[}8  
Position = 0 -0.8 (Y, @-V  
Orientation = 1 0 REoFP;H~  
Radius = 1 P)^K&7X  
Conic = 0 RX=C)q2c  
XMin = -1 //Hn[wEOh  
XMax = 1 ]![ewO@  
END X LA  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 yXppu[=  
BEGIN MyVolumeExtrusion001 %=S^{
A  
Position = 0 30 0 <R*.T)Z1  
Vector_I = 1 0 0 0}PW
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Vector_J = 0 0 1 l0tMdsz  
Generatrix = MYCURVE2DCONIC001 4rwfY<G  
Length = 30 4eBM/i  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 e0j*e7$  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 &UbNp8h  
Color = 255 155 255
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END 1U@
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粗看了一下： 9N5&N3  
光源定义了光强、散射方式、光谱， _;v4]MU  
怎么没有定义光源的出光角度？