[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 1v4(  
DECLARE CYLINDER Cylinder001 mq?5|`  
BEGIN Cylinder001 8vM}moper  
Position = 0 0 -0.3 ( {H5k''  
Vector_axis = 0 1 0 rQbL
86+  
Radius = 0.2 *Ki ],>_~  
Length = 60 r c7"sIkV  
Surface = SURFACE_LAMP wvm`JOP:A  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 $3sS&i<  
u5EHzoq  
Color = 255 0 0 ?s("@dz_  
END z1ltc{~Z  
pCNihZ~  
DECLARE SOURCE src )dJaF#6j  
Qcz7IA  
BEGIN src ++
:vO  
geometry = Cylinder001 '@u/] ra:  
emission = LAMBERT tqE LF  
power = 200 1@kPl[`p'  
unit = Lumen >yn%.Uoh@  
spectrum = BLACKBODY 5000 4XDR?KUM  
END o)7gKWjujP  
DECLARE CURVE2D_CONIC MyCurve2DConic001
!p1
OBS|  
BEGIN MyCurve2DConic001 0sRby!  
Position = 0 -0.8 8ltHR]v  
Orientation = 1 0 J56+eC(  
Radius = 1
qbkvwL9  
Conic = 0 l,*v/95h  
XMin = -1 u7&r'rZ1_!  
XMax = 1 !Ljs
9 =UF  
END y5.Z<Y  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 9/RbfV[)  
BEGIN MyVolumeExtrusion001 5f7;pS<  
Position = 0 30 0 "';'*x  
Vector_I = 1 0 0
~<3qsA..  
Vector_J = 0 0 1 EW$ Je  
Generatrix = MYCURVE2DCONIC001 /J8AnA1  
Length = 30 viAvD6e  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 FK{YRt  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 W?G4\ubM3<  
Color = 255 155 255 rB|D^@mG  
END "TKf"z
c  
V{fYMgv  

描述:图

图片:未标题-1 拷贝.jpg

粗看了一下： &Hc8u,|  
光源定义了光强、散射方式、光谱， +GgWd=X.Y  
怎么没有定义光源的出光角度？