[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 aMI\gCB/  
DECLARE CYLINDER Cylinder001 YbjeM6#E  
BEGIN Cylinder001 0kEzi  
Position = 0 0 -0.3 zOO:`^ m  
Vector_axis = 0 1 0 rN* ,U\q  
Radius = 0.2 $#E?`At{I  
Length = 60 $!F_K  
Surface = SURFACE_LAMP agdiJ-lyQ  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 ,I# X[^/  
|_7nvck  
Color = 255 0 0 &aD]_+b  
END U6SgV 8  
ETQ.A< v  
DECLARE SOURCE src e}e|??'(\  
;`ZGiax  
BEGIN src p<%76H A  
geometry = Cylinder001 R?bF b|5t  
emission = LAMBERT B]jI^(P  
power = 200 s
+m,ASj  
unit = Lumen A'(v]w  
spectrum = BLACKBODY 5000 eyPh^c]?`8  
END oB$7m4xO\  
DECLARE CURVE2D_CONIC MyCurve2DConic001 K5(:UIWx  
BEGIN MyCurve2DConic001 ~xz3- a/  
Position = 0 -0.8 eq>E<X#<  
Orientation = 1 0 E*rnk4Y  
Radius = 1 %*4
Gx +b  
Conic = 0 %) A-zzj  
XMin = -1 L_$M9G|5n  
XMax = 1 G}.t!"  
END p_z_d6?  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 Gp6|0:2,L~  
BEGIN MyVolumeExtrusion001 8GC(?#Kb  
Position = 0 30 0 9n][#I)a3  
Vector_I = 1 0 0 M+Rxt.~6  
Vector_J = 0 0 1 5$SO  
Generatrix = MYCURVE2DCONIC001 QC+oSb!!?  
Length = 30 |UbwPL_L  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 3)SO-Bz\  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 ,]ALyWGuX  
Color = 255 155 255 gm;6v30e  
END B5%N@g$`j  
b.jxkx\nt  

粗看了一下： c"mRMDg%  
光源定义了光强、散射方式、光谱， @C),-TM  
怎么没有定义光源的出光角度？