[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 2Ek6YNx  
DECLARE CYLINDER Cylinder001 v3+\Aq   
BEGIN Cylinder001 Yo c N
@s
 
Position = 0 0 -0.3 D!~-53f@  
Vector_axis = 0 1 0 HZdmL-1Z^+  
Radius = 0.2 _gB`;zo  
Length = 60 *Ri?mEv hF  
Surface = SURFACE_LAMP /)xG%J7H  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 p IXBJk  
JI}(R4uV  
Color = 255 0 0
k|,pj^  
END OedL?4  
DA@YjebP'  
DECLARE SOURCE src 85l 1
 
4?X#d)L(  
BEGIN src AyKaazm]9  
geometry = Cylinder001 B3'qmi<  
emission = LAMBERT %,GY&hTw  
power = 200 lkV% k1w  
unit = Lumen WJZW5 Xt  
spectrum = BLACKBODY 5000 0
iW]#O/  
END glh2CRUj  
DECLARE CURVE2D_CONIC MyCurve2DConic001 [K[tL|EK  
BEGIN MyCurve2DConic001 bh?Vufd
%)  
Position = 0 -0.8 [SgP1>M  
Orientation = 1 0 8f% @  
Radius = 1 TdP_L/>|J  
Conic = 0 phUno2fH  
XMin = -1 _tL*sA>[~)  
XMax = 1 )]!Ps` ,u  
END PEoOs  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 tq?lF$mM:  
BEGIN MyVolumeExtrusion001 yE-&TW_q:>  
Position = 0 30 0 J1Mm,LTO  
Vector_I = 1 0 0 r^&{0c&o  
Vector_J = 0 0 1 kqSCKY1  
Generatrix = MYCURVE2DCONIC001 L._I"g5 H9  
Length = 30 7[QU *1bk  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 er^z:1'  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 ` &|
Rs  
Color = 255 155 255 \i "I1xU  
END =R!=uml(  
O%A:2Y79  

描述:图

图片:未标题-1 拷贝.jpg

粗看了一下： Us M|OH5k  
光源定义了光强、散射方式、光谱， 0X`Qt[  
怎么没有定义光源的出光角度？