[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 [0w@0?[  
DECLARE CYLINDER Cylinder001 MkF:1-=L  
BEGIN Cylinder001 #B_ ``XV  
Position = 0 0 -0.3 -P^ 6b(  
Vector_axis = 0 1 0 +K])&}Dw  
Radius = 0.2 U8PSJ0ny  
Length = 60 8S"vRR  
Surface = SURFACE_LAMP ng;,;o.  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 swntz  
C2<!.l  
Color = 255 0 0 0jF~cV  
END 
_jQ"_Ff  
M8oI8\6[  
DECLARE SOURCE src eR4%4gW)  
m(L]R(t  
BEGIN src 51u8.%{4  
geometry = Cylinder001 ]g2Y/\)a  
emission = LAMBERT N=YRY
Uo  
power = 200 9s8B>(L  
unit = Lumen $WI=a-;_e  
spectrum = BLACKBODY 5000 PF+v[h;,  
END <O>1Y09C/  
DECLARE CURVE2D_CONIC MyCurve2DConic001 a$y=+4L  
BEGIN MyCurve2DConic001 ggR@& \  
Position = 0 -0.8 :,X,!0pWRp  
Orientation = 1 0 bwR24>8lP  
Radius = 1 K3Zc>QL{  
Conic = 0 o}C|N)'  
XMin = -1 9 ,=7Uh#7  
XMax = 1 L1 1
/XpR  
END \BOZhXfl'  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 p,.+i[V  
BEGIN MyVolumeExtrusion001 BWamF{\d1a  
Position = 0 30 0 *,A?lX,9A  
Vector_I = 1 0 0 K4b# y~@  
Vector_J = 0 0 1 uO
%G,b  
Generatrix = MYCURVE2DCONIC001 z=J%-Hq>  
Length = 30 D<B/oSy  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 q-P$ \":  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 ![YLY&}s  
Color = 255 155 255
sDL@e33Yb  
END Yq-Nk:H|  
X YO09#>&  

描述:图

图片:未标题-1 拷贝.jpg

粗看了一下： =LEKFXqM  
光源定义了光强、散射方式、光谱， 28J ;9  
怎么没有定义光源的出光角度？