[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 7[I}*3Q'  
DECLARE CYLINDER Cylinder001 JQV%fTHS  
BEGIN Cylinder001 e?opkq\f  
Position = 0 0 -0.3 'XZ)!1N  
Vector_axis = 0 1 0 MOsl_^c  
Radius = 0.2 BnCbon)  
Length = 60 ])L A42|  
Surface = SURFACE_LAMP 
9A}# 6  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 F">
Qpgt  
"ul {d(K3  
Color = 255 0 0 2ggdWg7
z  
END IqC]!H0  
29!q!g|  
DECLARE SOURCE src K@#(*."  
odPL{XFj  
BEGIN src Fb^:V4<T  
geometry = Cylinder001 V>ieh2G(  
emission = LAMBERT !OBEM1~ 1  
power = 200 Ys@}3\Mc  
unit = Lumen pV20oSJNt  
spectrum = BLACKBODY 5000 kBYNf =  
END Bm"KOr$}-  
DECLARE CURVE2D_CONIC MyCurve2DConic001 _C(m<n  
BEGIN MyCurve2DConic001 NbC@z9Q  
Position = 0 -0.8 T2SP W@#Z3  
Orientation = 1 0 T-5nB>)  
Radius = 1 r.#t63Rb  
Conic = 0 3E>frR\!I  
XMin = -1 3 |hHR  
XMax = 1 /[Z,MG  
END 3=Cc.a/3  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 Ttxqf:OMf  
BEGIN MyVolumeExtrusion001 fRtUvC-#H  
Position = 0 30 0 O9EKRt  
Vector_I = 1 0 0 ,!dh2xNH
^  
Vector_J = 0 0 1 >p.O0G gg  
Generatrix = MYCURVE2DCONIC001
#$c Rkw  
Length = 30 .a._NW  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 NR -!VJQ  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 :E>HE,1b+  
Color = 255 155 255 CAcS~ "  
END
e'0{?B  
e XfZ5(na  

描述:图

图片:未标题-1 拷贝.jpg

粗看了一下： sVJ!FC  
光源定义了光强、散射方式、光谱， G3rj`Sg^c  
怎么没有定义光源的出光角度？