[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 #G
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DECLARE CYLINDER Cylinder001 drwg
jLC+  
BEGIN Cylinder001 @5) 8L/[l  
Position = 0 0 -0.3 midsnG+jnf  
Vector_axis = 0 1 0 hC_Vts[v/  
Radius = 0.2 fQ+VT|jzx  
Length = 60 Cc?TSZ8[  
Surface = SURFACE_LAMP *]JdHO  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 UueD
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\RQ='/H*  
Color = 255 0 0 c^8o~K>w84  
END ydv
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^BZkHAp  
DECLARE SOURCE src 9s +z B  
6B$q,"%S@  
BEGIN src vhr+g 'tf  
geometry = Cylinder001 mYB`)M*Y  
emission = LAMBERT f^e6<5gdf  
power = 200 t"j|nz{m  
unit = Lumen /\mKY%kyh  
spectrum = BLACKBODY 5000 *s}|Hy  
END ea=83 Zj  
DECLARE CURVE2D_CONIC MyCurve2DConic001 CLKov\U\  
BEGIN MyCurve2DConic001 04!(okubyp  
Position = 0 -0.8 ihT~xt  
Orientation = 1 0 G)>W'yxQ  
Radius = 1 !0/z>#b  
Conic = 0 y%]8'q$  
XMin = -1 .'[/|4H  
XMax = 1 v;y0jD
#b  
END (kTXP_  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 +w|9x.&W  
BEGIN MyVolumeExtrusion001 #y]3LC#)^G  
Position = 0 30 0 0JRD  
Vector_I = 1 0 0 F="z]C;u  
Vector_J = 0 0 1 /.5;in  
Generatrix = MYCURVE2DCONIC001 r^$~>!kZ|  
Length = 30 ~c{:DM  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 [AEBF2OIv  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 ,gnQa  
Color = 255 155 255 u"$a>S_  
END -U2mfW  
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描述:图

图片:未标题-1 拷贝.jpg

粗看了一下： aj|5 #  
光源定义了光强、散射方式、光谱， `!\ivIi^  
怎么没有定义光源的出光角度？