[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 <njIXa{  
DECLARE CYLINDER Cylinder001 SOhSg]g  
BEGIN Cylinder001 *e%Dg{_  
Position = 0 0 -0.3 HmhU
c,EC  
Vector_axis = 0 1 0 u/_Gq[Q,u  
Radius = 0.2
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Length = 60 (~=Qufy  
Surface = SURFACE_LAMP 3aEt>x  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 {An8/"bv}  
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Color = 255 0 0 c=jcvDQ6W  
END 9cVn>Fb  
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DECLARE SOURCE src axWM|Bw<+  
^?E^']H)5u  
BEGIN src sVE>=0TVP  
geometry = Cylinder001 $|>6z_3%  
emission = LAMBERT sXSj OUI  
power = 200 R"m.&%n  
unit = Lumen 1f+*Tmc5]Q  
spectrum = BLACKBODY 5000 `DI{wqV9  
END FI3sLA  
DECLARE CURVE2D_CONIC MyCurve2DConic001 ;[?J5X,  
BEGIN MyCurve2DConic001 @uQ%o%Ru6  
Position = 0 -0.8 vs5 D:cZ}  
Orientation = 1 0 r0~7v1rG  
Radius = 1 1joc<EI  
Conic = 0 Q{%HW4lg  
XMin = -1 M3hy5j(b  
XMax = 1 ~|X99?P  
END )v*v  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 ~J8cS  
BEGIN MyVolumeExtrusion001 @/_
XS4  
Position = 0 30 0 >xxXPvM<`  
Vector_I = 1 0 0 y}(_SU  
Vector_J = 0 0 1 R*JOiVAC  
Generatrix = MYCURVE2DCONIC001 !1ie:z>s  
Length = 30 sW>P-  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 ]=$-B  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 "2y7&#l  
Color = 255 155 255 9`nP
(~  
END \GjXsR*b5  
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描述:图

图片:未标题-1 拷贝.jpg

粗看了一下：
\nWzn4f  
光源定义了光强、散射方式、光谱， Is,*qrl :  
怎么没有定义光源的出光角度？