[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 wxj>W[V  
DECLARE CYLINDER Cylinder001 4.8nY\_WF  
BEGIN Cylinder001 Ox^:)ii  
Position = 0 0 -0.3 jeq:  
Vector_axis = 0 1 0 ),=@q+{E{  
Radius = 0.2 u_LY\'n  
Length = 60 >B_n/v3P(M  
Surface = SURFACE_LAMP }p=g*Zo*C;  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 G+VD8]!K1  
2U}m RgJu  
Color = 255 0 0 Rn-G @}f  
END `B:"6nW6  
94Ud@F9d5  
DECLARE SOURCE src 'z5h3J  
h*3{6X#(/  
BEGIN src -f9]v9|l  
geometry = Cylinder001 K'aWCscM  
emission = LAMBERT WDkuB  
power = 200 K"\MU  
unit = Lumen ,gMy@  
spectrum = BLACKBODY 5000 ybQP E/9
 
END ]\Xc9N8w  
DECLARE CURVE2D_CONIC MyCurve2DConic001 9JnY$e<&  
BEGIN MyCurve2DConic001 yfEb  
Position = 0 -0.8 Cqxv"NN  
Orientation = 1 0 \4{2eU  
Radius = 1 +7U  
Conic = 0 [h&BAR/ 2  
XMin = -1 0q,pi qjO  
XMax = 1 V*RdDF7  
END !%PWig-  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 bk<FL6z z  
BEGIN MyVolumeExtrusion001 ?2#(jZ# 2  
Position = 0 30 0 T9syo/(  
Vector_I = 1 0 0 FT89*C)oD  
Vector_J = 0 0 1 ~n?>[88"  
Generatrix = MYCURVE2DCONIC001 z;

Q<F  
Length = 30 VDGCWg6z  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 %Dig)<yx  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20  Paj vb-f  
Color = 255 155 255 E9}{1A  
END yT8=l"-[G  
PdeBDFWD  

粗看了一下： ~b~2 >c9  
光源定义了光强、散射方式、光谱， BB$oq'  
怎么没有定义光源的出光角度？