[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 +/3 Z  
DECLARE CYLINDER Cylinder001 ^wO_b'@v  
BEGIN Cylinder001 CS;W)F  
Position = 0 0 -0.3 ^KZAYB9C  
Vector_axis = 0 1 0 dx13vZ3[U  
Radius = 0.2 <Sprp]n 7  
Length = 60 F/h:&B:;  
Surface = SURFACE_LAMP n.a=K2H:V  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 => uVp  
GIC"-l1\  
Color = 255 0 0 ?BDlB0jxzi  
END )"_Ff,9Z!  
c#n4zdQd]5  
DECLARE SOURCE src 5"}y\  
D0#T-B\#  
BEGIN src -yl4tW  
geometry = Cylinder001 b 5F4+  
emission = LAMBERT
=MJ-s;raq  
power = 200 8sR  
unit = Lumen Pu$kj"|q*[  
spectrum = BLACKBODY 5000 co<2e#p;  
END Zr.\`mG4f  
DECLARE CURVE2D_CONIC MyCurve2DConic001 &N/|(<CB  
BEGIN MyCurve2DConic001 )4!CR/ao  
Position = 0 -0.8 )]/i  
Orientation = 1 0 >?>ubM`,  
Radius = 1 4T==A#
Z  
Conic = 0 .Yu<%  
XMin = -1 Ok}{jwJ%W;  
XMax = 1 FI?gT  
END >J^7}J  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 NIGB[2V(  
BEGIN MyVolumeExtrusion001 V6@*\+:3)  
Position = 0 30 0 J|gdO+  
Vector_I = 1 0 0 yN9$gfJC^  
Vector_J = 0 0 1 GhG%>U#&a  
Generatrix = MYCURVE2DCONIC001 24H^hN9  
Length = 30 ~j/bCMEf!  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 Q? <-`7  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 )g9)IF  
Color = 255 155 255 ~^lH ^J  
END 1P[I}GW#  
a1 46kq  

描述:图

图片:未标题-1 拷贝.jpg

粗看了一下： L
!bfh`  
光源定义了光强、散射方式、光谱， H!unIy|  
怎么没有定义光源的出光角度？