[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 Oq7M1|{  
BEGIN Cylinder001 58DkVQ6  
Position = 0 0 -0.3 d/v{I  
Vector_axis = 0 1 0 o:.={)rX  
Radius = 0.2 Xx~OZ^t&Vn  
Length = 60 Y}&//S A  
Surface = SURFACE_LAMP Y4_/G4C  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 cV\(Z6u  
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Color = 255 0 0 Aq yR+  
END 8`v+
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DECLARE SOURCE src %YkJA:  
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BEGIN src
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geometry = Cylinder001 R9A8)dDz  
emission = LAMBERT IDQ@h`"B  
power = 200 k@L},Td  
unit = Lumen N7Kq$G2O  
spectrum = BLACKBODY 5000 I<`K;El'  
END %PRG;kR  
DECLARE CURVE2D_CONIC MyCurve2DConic001 P"Lk(gY  
BEGIN MyCurve2DConic001 A'vQtlvKA  
Position = 0 -0.8 J3fk3d`2  
Orientation = 1 0 /{>$E>N;  
Radius = 1 IFcxyp  
Conic = 0 /2N'
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XMin = -1 J -tOO  
XMax = 1 mk(O..)2  
END gHdNqOy c  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 x' >Nz{B,P  
BEGIN MyVolumeExtrusion001 ~P8 6=Vw  
Position = 0 30 0 jd8`D6|Z  
Vector_I = 1 0 0 {; #u~e(W  
Vector_J = 0 0 1 a8ya5EO  
Generatrix = MYCURVE2DCONIC001 _1Iy/T@1  
Length = 30 ;\ ^'}S|3Z  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 7#d>a=$h  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 TUHm.!+a  
Color = 255 155 255 rH*1bDL  
END BmR++?L  
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描述:图

图片:未标题-1 拷贝.jpg

粗看了一下： PD #9Z=Hj  
光源定义了光强、散射方式、光谱， <Qg).n>;z  
怎么没有定义光源的出光角度？