[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 zX4RqI  
DECLARE CYLINDER Cylinder001 t>/x-{bH\  
BEGIN Cylinder001 HE%
/+mZN  
Position = 0 0 -0.3 WFh.oe8  
Vector_axis = 0 1 0 sQac%.H;`U  
Radius = 0.2 JE7m5kTa  
Length = 60 N)GHQlgH  
Surface = SURFACE_LAMP q]I aRho  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 )iQ^HZ  
Rd5_{F  
Color = 255 0 0 !Yv_V]u=  
END uVCH<6Cp  
oV0T   
DECLARE SOURCE src ]i$0s  
4&sf{tI  
BEGIN src ;=jF9mV.  
geometry = Cylinder001 BB\GrD  
emission = LAMBERT H8FvI"J  
power = 200 ]i$y;]f  
unit = Lumen R`Z"ey@C  
spectrum = BLACKBODY 5000 IBo  
END gTXpaB<  
DECLARE CURVE2D_CONIC MyCurve2DConic001 $3G^}A"  
BEGIN MyCurve2DConic001 [
gMn  
Position = 0 -0.8 ZK+F<}  
Orientation = 1 0 Y?NL|cW4  
Radius = 1 Nw1*);b[y  
Conic = 0 z3K$gEve  
XMin = -1 kpIn_Ea  
XMax = 1 U?le|tK  
END ou<3}g  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 .Y;
f9R  
BEGIN MyVolumeExtrusion001 $jg[6`L$  
Position = 0 30 0 Rzg;GH  
Vector_I = 1 0 0 "u!gfG?oH  
Vector_J = 0 0 1 Y~g{9 <!  
Generatrix = MYCURVE2DCONIC001 RI&O@?+U  
Length = 30 J W@6m  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 z7bJV/f  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 9 A ?{}c  
Color = 255 155 255 Ne1Oz}  
END PJC(:R(j  
LJ/He[r|[  

描述:图

图片:未标题-1 拷贝.jpg

粗看了一下： K>$f#^  
光源定义了光强、散射方式、光谱， ca_mift  
怎么没有定义光源的出光角度？