[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 Qs1e0LwA9  
DECLARE CYLINDER Cylinder001 GAY f.L"  
BEGIN Cylinder001 8-uRn38  
Position = 0 0 -0.3 WIkr0k  
Vector_axis = 0 1 0 vAH`tPi>  
Radius = 0.2 ,'z=cB`+o  
Length = 60 b9cY  
Surface = SURFACE_LAMP tShyG!b  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 .Mz'h9@  
wr{ [4$O  
Color = 255 0 0 D5gDVulsh  
END +x_9IvaW&?  
e=#'rDm  
DECLARE SOURCE src i3v|r 0O~L  
~ u',Way  
BEGIN src M,(UCyT  
geometry = Cylinder001 W1;u%>Uh  
emission = LAMBERT ccm(r~lhJ  
power = 200 F* h\#?  
unit = Lumen \\{+t<?J  
spectrum = BLACKBODY 5000 hH])0C  
END "GY/2;  
DECLARE CURVE2D_CONIC MyCurve2DConic001 Q( g&/O  
BEGIN MyCurve2DConic001 @24)*d^1  
Position = 0 -0.8
Z(0sMOaX  
Orientation = 1 0 P{ HYZg  
Radius = 1 wOU\&u|
 
Conic = 0 ^j>w<ljzz  
XMin = -1 3sF^6<E  
XMax = 1 o b,%); m  
END w_hN2eYo&e  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 "CcdwWM  
BEGIN MyVolumeExtrusion001 IyJHKDFk  
Position = 0 30 0 e_Un:r@)  
Vector_I = 1 0 0 ( {}Z '  
Vector_J = 0 0 1 yG..B  
Generatrix = MYCURVE2DCONIC001 `Eq~W@';Q0  
Length = 30 ~f5g\n;  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 '#Pg:v_  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 &w"1VOV<  
Color = 255 155 255 $7 FT0?kG  
END .{ +Obi  
5zk^zn)  

粗看了一下： {>rGe#Vu  
光源定义了光强、散射方式、光谱， ?CU6RC n  
怎么没有定义光源的出光角度？