[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 q kKABow  
DECLARE CYLINDER Cylinder001 w7D:0SGD  
BEGIN Cylinder001 >YfOR%mS4  
Position = 0 0 -0.3 |pgkl`  
Vector_axis = 0 1 0 &\H5*A.HkA  
Radius = 0.2 ul%bo%&~  
Length = 60 L%0lX$2&\  
Surface = SURFACE_LAMP %PS-nF7v  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20
:acQK=fe  
!kcg#+s91  
Color = 255 0 0 10J*S[n1  
END 0/6&2  
uqUo4z5T  
DECLARE SOURCE src v wyDY%B"n  
x-pMT3m\D#  
BEGIN src asi1c y\  
geometry = Cylinder001 +B m+Pj>  
emission = LAMBERT yq}{6IyZ^  
power = 200 k:TfE6JZ  
unit = Lumen `Z/IW  
spectrum = BLACKBODY 5000 *o[%?$8T  
END vxeT[/6i  
DECLARE CURVE2D_CONIC MyCurve2DConic001 c7F&~RLC  
BEGIN MyCurve2DConic001 ^ ?=K)  
Position = 0 -0.8 ptR  
Orientation = 1 0 fh_ .J[Y.k  
Radius = 1 bIArAS9%  
Conic = 0 wuzz%9;@B  
XMin = -1 *r`Yz}  
XMax = 1 9^^#I~-  
END PNKT\yd  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 g#4gGhI  
BEGIN MyVolumeExtrusion001 #CPPdU$  
Position = 0 30 0 aAri  
Vector_I = 1 0 0 7fay:_  
Vector_J = 0 0 1 @__;RVQ  
Generatrix = MYCURVE2DCONIC001 Hl;p>>n  
Length = 30 m-89nOls  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 ,}tdfkZFYl  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 mx9/K+:  
Color = 255 155 255  nvPE N  
END zy[=OX+  
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描述:图

图片:未标题-1 拷贝.jpg

粗看了一下： 8-a6Q
|   
光源定义了光强、散射方式、光谱， WrNgV@P  
怎么没有定义光源的出光角度？