[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 #jS[
  
DECLARE CYLINDER Cylinder001 -t3i^&fj8  
BEGIN Cylinder001 fgCT!s7z  
Position = 0 0 -0.3 d`%Mg&  
Vector_axis = 0 1 0 WzlC*iv  
Radius = 0.2 jv&+<j`r  
Length = 60 `&*bM0(J  
Surface = SURFACE_LAMP NQLiWz-q  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 2 ZG@!Y|  
pFO^/P'  
Color = 255 0 0 7z'ha?  
END (:sZ b?*  
IZNOWX|Z;  
DECLARE SOURCE src tZ8e`r*  
rt!r2dq"  
BEGIN src 2\@Z5m3B  
geometry = Cylinder001 {
o|k.zy  
emission = LAMBERT e7k%6'@  
power = 200 `W5-.Tv  
unit = Lumen wNDbHR  
spectrum = BLACKBODY 5000 vsMmCd)7U  
END qX6D1X1_  
DECLARE CURVE2D_CONIC MyCurve2DConic001 92[a;a  
BEGIN MyCurve2DConic001 4JMiyiW&  
Position = 0 -0.8 b?VV'{4  
Orientation = 1 0 1}g:|Q  
Radius = 1 YpmYxd^  
Conic = 0 pIO4,VL;W  
XMin = -1 LU2waq}VA  
XMax = 1 pv# 2]v  
END K-Mc6  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 K1q+~4>\|  
BEGIN MyVolumeExtrusion001 7y<1LQ;}  
Position = 0 30 0 (03pJV&K  
Vector_I = 1 0 0 l-)Bivoi  
Vector_J = 0 0 1 k$
"d^*R  
Generatrix = MYCURVE2DCONIC001 ~~qWI>.4  
Length = 30 m $dV<  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 mG2'Y)Sz  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 WFv!Pbq,  
Color = 255 155 255 FxW&8 9G  
END .#w6%c@  
(-^bj  

描述:图

图片:未标题-1 拷贝.jpg

粗看了一下： ;y>a nE}n{  
光源定义了光强、散射方式、光谱， S-Fo  
怎么没有定义光源的出光角度？