[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 K/4@2vF  
DECLARE CYLINDER Cylinder001 D6SUzI1+H  
BEGIN Cylinder001 ?z ,!iK`  
Position = 0 0 -0.3 _sjS'*]  
Vector_axis = 0 1 0 !U`&a=k  
Radius = 0.2 {f*Y}/@  
Length = 60 AZ:7_4jz  
Surface = SURFACE_LAMP F<4rn  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 I-v} DuM  
 ` Xc7b  
Color = 255 0 0 :XKYfc_y  
END Z0|5VLk,<{  
,(jJOFf  
DECLARE SOURCE src 01bCP  
lR(9;3  
BEGIN src PjQl(v&O  
geometry = Cylinder001 i4C{3J^  
emission = LAMBERT AbU`wr/h 4  
power = 200 Iil2R}1  
unit = Lumen 6iFlz9XiI  
spectrum = BLACKBODY 5000 -oD,F $Rb  
END p^l#Wq5  
DECLARE CURVE2D_CONIC MyCurve2DConic001 &lc@]y8  
BEGIN MyCurve2DConic001 OqGp|`  
Position = 0 -0.8 sA0Ho6  
Orientation = 1 0 AR"2?2<mJ7  
Radius = 1 m l`xLZN>L  
Conic = 0 ^0,}y]5p  
XMin = -1 _K5<)( )  
XMax = 1 8jK=A2pTa  
END tldT(E6  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 .[={Yx0!I  
BEGIN MyVolumeExtrusion001 "tEp8m  
Position = 0 30 0 YOxgpQ:i  
Vector_I = 1 0 0 B=Hd:P|  
Vector_J = 0 0 1 Zy0M\
-Mn  
Generatrix = MYCURVE2DCONIC001 ~Nh6po{  
Length = 30 D2e-b  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 A#>wbHjWF  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 ]+lT*6P*  
Color = 255 155 255 D@=]mh6vl  
END X[z;P!U  
B'/U#>/  

描述:图

图片:未标题-1 拷贝.jpg

粗看了一下： <3Ftq=  
光源定义了光强、散射方式、光谱， ]t[%.^5#  
怎么没有定义光源的出光角度？