[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 B(g_Gm<  
DECLARE CYLINDER Cylinder001 2jJmE&)7,  
BEGIN Cylinder001
fEf_F r  
Position = 0 0 -0.3 CvSIV7zYo  
Vector_axis = 0 1 0 :$;Fhf<5  
Radius = 0.2
7"F*u :  
Length = 60 SvM6iZ]  
Surface = SURFACE_LAMP ?lGG|9J\  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 1J=.N|(@Q  
aimarU  
Color = 255 0 0 LsEXM-  
END }0#U;_;D  
bK"SKV  
DECLARE SOURCE src :o-,SrORM  
v,-{Z1N%m  
BEGIN src @+vXMJ$  
geometry = Cylinder001 K5ZC:Ks  
emission = LAMBERT ^H{R+}  
power = 200 o+`6LKg;  
unit = Lumen 6*4's5>?D  
spectrum = BLACKBODY 5000 oF9 -&  
END 4'j sDcs  
DECLARE CURVE2D_CONIC MyCurve2DConic001 H&1[nU{?>  
BEGIN MyCurve2DConic001 N7'OPTKt&  
Position = 0 -0.8 M#"524Nz  
Orientation = 1 0 AqKz$  
Radius = 1 v 8T$ &-HJ  
Conic = 0 0N[&3Ee8  
XMin = -1 (Fq5IGs  
XMax = 1 K8n4oz#z  
END T{V/+RM  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 iLP7!j  
BEGIN MyVolumeExtrusion001 H9h@sSg  
Position = 0 30 0 =9oPowq  
Vector_I = 1 0 0 4c oJRqf=  
Vector_J = 0 0 1 3czeT
j  
Generatrix = MYCURVE2DCONIC001 9TF f8'?d  
Length = 30 Qy<[7  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 ;Op3?_  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 ,fK3ZC  
Color = 255 155 255 /{wJEuE  
END LmlXMia  
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描述:图

图片:未标题-1 拷贝.jpg

粗看了一下： GN KF&M  
光源定义了光强、散射方式、光谱， kYzC#.|1  
怎么没有定义光源的出光角度？