[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 sgOau\E  
DECLARE CYLINDER Cylinder001 lW5Lwyt8  
BEGIN Cylinder001 +IS6l*_y>6  
Position = 0 0 -0.3 rG?5z"  
Vector_axis = 0 1 0 /)kJ iV  
Radius = 0.2 s=:)!M.i  
Length = 60 CJk"yW[,|  
Surface = SURFACE_LAMP bVz<8b6h'-  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 [;{xiW4V]  
z00X ?F  
Color = 255 0 0 &jY| :Fe  
END lD0a<L3  
k6"(\d9o  
DECLARE SOURCE src WyOav6/*K^  
:@)R@. -  
BEGIN src E{[Y8U1n  
geometry = Cylinder001 @k{q[6c2n  
emission = LAMBERT zgz!"knVx  
power = 200 p>eYi \'  
unit = Lumen d`TiY`!  
spectrum = BLACKBODY 5000 TO
]7cC  
END hiibPc?I  
DECLARE CURVE2D_CONIC MyCurve2DConic001 >d`GNE  
BEGIN MyCurve2DConic001 ~ Rk.x +  
Position = 0 -0.8 ;%d<Uk?  
Orientation = 1 0 2FaCrc/  
Radius = 1 sN8pwRjb  
Conic = 0 qpFxl  
XMin = -1 9QX!HQ|5y8  
XMax = 1 Ep
O2%|@  
END )NhC+=N  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 Eoixw8hz  
BEGIN MyVolumeExtrusion001 ?;v\wx  
Position = 0 30 0 6)0.q|Q  
Vector_I = 1 0 0 xDU\mfeGj  
Vector_J = 0 0 1 5-GS@fY  
Generatrix = MYCURVE2DCONIC001 P<Bx1H-z-  
Length = 30 n=4  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 sQA_6]`  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 2DPv7\fW  
Color = 255 155 255 O'IU1sU  
END
Lhp&RGy  
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描述:图

图片:未标题-1 拷贝.jpg

粗看了一下： M\4`S&  
光源定义了光强、散射方式、光谱， O%kUj&h^  
怎么没有定义光源的出光角度？