[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 4_UU<GEp  
DECLARE CYLINDER Cylinder001 =1
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BEGIN Cylinder001 [tH-D$V  
Position = 0 0 -0.3 Kv rX{F=  
Vector_axis = 0 1 0 3 AHY|  
Radius = 0.2 je6CDFqw  
Length = 60 +MB!B9M@  
Surface = SURFACE_LAMP 5|I[>Su  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 \(PohwWWo  
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Color = 255 0 0 r&2~~_d3y  
END /\w)>0  
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DECLARE SOURCE src Y'u7 IX}  
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*  
BEGIN src ,j?.4{rHJ  
geometry = Cylinder001 p)=~% 7DV  
emission = LAMBERT g!`3{ /4  
power = 200 { K_kPgKS  
unit = Lumen Cv*x2KF G  
spectrum = BLACKBODY 5000 ~=wCwA|1  
END S#b-awk  
DECLARE CURVE2D_CONIC MyCurve2DConic001 rFZrYm  
BEGIN MyCurve2DConic001 k;EPpr-{  
Position = 0 -0.8 enTW0U}  
Orientation = 1 0 _oB_YL;,*  
Radius = 1 kwud?2E  
Conic = 0 oR~e#<$;  
XMin = -1 ^Q{Bq  
XMax = 1 -L3|&O_  
END J@L9p46,  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 ]{ d[
 
BEGIN MyVolumeExtrusion001 m3^/:<  
Position = 0 30 0 3pXLSdxB  
Vector_I = 1 0 0 vNW jH!'  
Vector_J = 0 0 1 |3{&@7  
Generatrix = MYCURVE2DCONIC001 fRvAKz|rL  
Length = 30 !'f3>W\   
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 e/8z+H^H  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 OI0B:()  
Color = 255 155 255 k{AyD`'Q  
END C*X G_b ]  
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粗看了一下： n^hocGH*  
光源定义了光强、散射方式、光谱， M]HgIL@9#  
怎么没有定义光源的出光角度？