[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 PR'FSTg  
DECLARE CYLINDER Cylinder001 &.z/dFmG  
BEGIN Cylinder001 )F$Stg3e  
Position = 0 0 -0.3 [.Y=~)7FB  
Vector_axis = 0 1 0 u!-eP7;7  
Radius = 0.2 gU~)(|Nu.  
Length = 60 As\5Ze9|  
Surface = SURFACE_LAMP 3L
xJ}>]TO  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 W" !amMQ  
^KaMi_--  
Color = 255 0 0 )KuvG:+9W  
END d+;wDu  

MMAC,4  
DECLARE SOURCE src *Vc=]Z2G^  
+|H'Ij$  
BEGIN src FO5SXwx  
geometry = Cylinder001 4bBxZY  
emission = LAMBERT "n e'iJf_(  
power = 200 2G-? P"4l@  
unit = Lumen 
TkBBHg;  
spectrum = BLACKBODY 5000 e
)xWQ=,C  
END S|J8:-  
DECLARE CURVE2D_CONIC MyCurve2DConic001 -,;Ep'  
BEGIN MyCurve2DConic001 5QSmim  
Position = 0 -0.8 :mrGB3x{  
Orientation = 1 0 $G_<YVXcG  
Radius = 1 &wuV}S7  
Conic = 0 )QE_+H}p  
XMin = -1 G8s`<:9*  
XMax = 1 y|dXxd9  
END d<Os TA  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 C|I 1 m  
BEGIN MyVolumeExtrusion001 N93E;B  
Position = 0 30 0 9y5\4&v  
Vector_I = 1 0 0 U %ESuq#  
Vector_J = 0 0 1 zoJ;5a.3B  
Generatrix = MYCURVE2DCONIC001 KR}0(,Y  
Length = 30 BQU5[8l  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 *X\c $=*  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 /wTf&_"mTL  
Color = 255 155 255 ie(7m|.  
END #$w#"Nr9k  
m%[t&^b}T  

描述:图

图片:未标题-1 拷贝.jpg

粗看了一下： Gme$FWa  
光源定义了光强、散射方式、光谱， ~vGtNMQg  
怎么没有定义光源的出光角度？