[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 (Az^st/_  
DECLARE CYLINDER Cylinder001 u3q!te  
BEGIN Cylinder001 ?p5Eo{B  
Position = 0 0 -0.3 dsh}-'>  
Vector_axis = 0 1 0 QF>H>=Za=  
Radius = 0.2 \"5\hX~dS  
Length = 60 C'{Z?M>  
Surface = SURFACE_LAMP HLS^Ga,(  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 'h:4 Fzo<  
5K8\hoW{  
Color = 255 0 0 i'a M#4V  
END CxO)d7c  
XOxm<3gXn  
DECLARE SOURCE src 3
M^ /  
fUa`YryQ  
BEGIN src (bXCc  
geometry = Cylinder001 5ewQjwW0  
emission = LAMBERT <)M?qkjb  
power = 200 7n#0eska,  
unit = Lumen >~6 ;9{@  
spectrum = BLACKBODY 5000 zj8;ENhEI  
END GU=h2LSi]  
DECLARE CURVE2D_CONIC MyCurve2DConic001 ~Su>^T(?-  
BEGIN MyCurve2DConic001 J?%Z7&/M>  
Position = 0 -0.8 nwz}&nR  
Orientation = 1 0 xe 6x!  
Radius = 1 m0 `wmM  
Conic = 0 ,]o32@  
XMin = -1 iXBc ~S  
XMax = 1 $?
0<rvGJ  
END z2-=fIr.h  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 '*K/K],S]  
BEGIN MyVolumeExtrusion001 +^`c"qJo  
Position = 0 30 0 !I:6L7HdwB  
Vector_I = 1 0 0 J)*y1   
Vector_J = 0 0 1 w^dB1Y7c(W  
Generatrix = MYCURVE2DCONIC001 M[N|HsI8?  
Length = 30 )\t#e`3  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 WWD\EDnS  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 _))_mxV{  
Color = 255 155 255 S0\:1B  
END t@b';Cuv  
GAQVeL1  

粗看了一下： H!HkXm"  
光源定义了光强、散射方式、光谱， ar R)]gk 7  
怎么没有定义光源的出光角度？