[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 6CU8BDN  
DECLARE CYLINDER Cylinder001 T "G!H  
BEGIN Cylinder001 ]3QQ"HLcp  
Position = 0 0 -0.3 *<#&ne8  
Vector_axis = 0 1 0 1ck2Gxn  
Radius = 0.2 %9NGVC  
Length = 60 6]g
s{zG  
Surface = SURFACE_LAMP {YbqB6zaM  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 ,?#-1uIGL>  
m9xu$z|e  
Color = 255 0 0 9au)K!hN  
END Qw5M\   
SqTm/ t  
DECLARE SOURCE src 
6^: l  
iQGoy@<R  
BEGIN src ypd  
geometry = Cylinder001 SKfv.9  
emission = LAMBERT f(n{7  
power = 200 {2:H
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unit = Lumen Da@tpKU)p  
spectrum = BLACKBODY 5000 d$2{_6  
END Z21XlbK  
DECLARE CURVE2D_CONIC MyCurve2DConic001 KuI>:i;  
BEGIN MyCurve2DConic001 {U(h]'  
Position = 0 -0.8 Q#g s)2  
Orientation = 1 0 W'0wTZG  
Radius = 1 X}usyO'pW  
Conic = 0 In;z\"NN4  
XMin = -1 nf G:4k,  
XMax = 1 G+g`=7  
END mifYk>J^9  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 2iG(v._x  
BEGIN MyVolumeExtrusion001 z!L0j+  
Position = 0 30 0 -=sxbs.aA  
Vector_I = 1 0 0 Iw<c 9w8  
Vector_J = 0 0 1 gaCGU<L  
Generatrix = MYCURVE2DCONIC001 !eTS PM  
Length = 30 G#*!)#M <
 
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 ntkinbbD  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 Jb$z(?S  
Color = 255 155 255 Vut.oB$ ~  
END h?1pGz)[C  
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描述:图

图片:未标题-1 拷贝.jpg

粗看了一下： <Ztda !  
光源定义了光强、散射方式、光谱， 4>Y\2O?**  
怎么没有定义光源的出光角度？