[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 &<|-> *v  
DECLARE CYLINDER Cylinder001 
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BEGIN Cylinder001 Xz.Y-5)  
Position = 0 0 -0.3 $7DcQ b9  
Vector_axis = 0 1 0 K7xWE,y  
Radius = 0.2 [kuVQ$)  
Length = 60 d:<H?~  
Surface = SURFACE_LAMP #DK3p0d  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 !MJe+.  
,WB_C\.#XN  
Color = 255 0 0 9kX=99kf[  
END D@\;@( |  
1^f.5@tV  
DECLARE SOURCE src oS#'u1k  
v]{uxlh  
BEGIN src k8 ;uC~L  
geometry = Cylinder001 ){  
emission = LAMBERT *fH_lG%  
power = 200 o!toO&=  
unit = Lumen h#m:Y~GoF  
spectrum = BLACKBODY 5000 GKyG #Fl  
END 4OOn,09  
DECLARE CURVE2D_CONIC MyCurve2DConic001 %t~SOkx  
BEGIN MyCurve2DConic001 (e8G (  
Position = 0 -0.8 o`\.I&Ij  
Orientation = 1 0 Vp]D  
Radius = 1 ]KXMGH_  
Conic = 0 "\/^/vn?  
XMin = -1 t`Y!"l  
XMax = 1 ![@T iM  
END R{) Q1~H=q  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 /j' B\,  
BEGIN MyVolumeExtrusion001 IObx^N_K  
Position = 0 30 0 )W1(tEq59  
Vector_I = 1 0 0 JS/M~8+Et  
Vector_J = 0 0 1 :/v,r=Y9p  
Generatrix = MYCURVE2DCONIC001 Jh43)#G-  
Length = 30 !0ce kSesr  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 l 70,Jo?78  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 &v$,pg%-:  
Color = 255 155 255 v.Xoq  
END -*|:v67C&  
3T|Y}  

描述:图

图片:未标题-1 拷贝.jpg

粗看了一下： k]?z~p  
光源定义了光强、散射方式、光谱， E &7@#'l  
怎么没有定义光源的出光角度？