[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 9|//_4]  
DECLARE CYLINDER Cylinder001 )X-TJ+d  
BEGIN Cylinder001 U KdCG.E9^  
Position = 0 0 -0.3 JC4Z^/\.  
Vector_axis = 0 1 0 E)F"!56lV  
Radius = 0.2 Q |^c5  
Length = 60 SL>0_
 
Surface = SURFACE_LAMP jVdB- y/r  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 U`ELd:  
on0>_-n)  
Color = 255 0 0 6-uB[$ko  
END g [+_T{  
R~(_m#6`:  
DECLARE SOURCE src S31+ j
:"  
?:sQ]S/Er  
BEGIN src yy|F6Pq3`  
geometry = Cylinder001 PiwI.c  
emission = LAMBERT Toc="F`SW  
power = 200 l%$co07cX  
unit = Lumen }4"T# [n#  
spectrum = BLACKBODY 5000 MM4Eq>F/  
END e5fzV.'5  
DECLARE CURVE2D_CONIC MyCurve2DConic001 n7K\\|X  
BEGIN MyCurve2DConic001 d!]_n|B@9  
Position = 0 -0.8 < 5#}EiT5  
Orientation = 1 0 D[}qhDlX  
Radius = 1 `?:X-dh_  
Conic = 0 FBJ Lkg0  
XMin = -1 %q 7gl;'  
XMax = 1 NI?YUhg>  
END !RwOUCk  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 pwO U6A!  
BEGIN MyVolumeExtrusion001 {F+iL&e)  
Position = 0 30 0 {H%1sI  
Vector_I = 1 0 0 W02swhS  
Vector_J = 0 0 1 ]AzDkKj  
Generatrix = MYCURVE2DCONIC001 w@ =Uf7  
Length = 30 tXnD>H YV  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 \)n'Ywr  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 %{M&"Mv  
Color = 255 155 255 xiG_l-2l  
END SV96eYT<  
q%A.)1<'_  

粗看了一下： k3B-;%3I;  
光源定义了光强、散射方式、光谱， OJF41Z  
怎么没有定义光源的出光角度？