[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 0|qAxR-  
DECLARE CYLINDER Cylinder001 T wB}l  
BEGIN Cylinder001 of~4Q{f$6  
Position = 0 0 -0.3 >h1}~jW+  
Vector_axis = 0 1 0 .~db4d]  
Radius = 0.2 _RYxD"my  
Length = 60 jwe*(k]z  
Surface = SURFACE_LAMP }v;V=%N+v  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 "9uKtQS0o  
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>H|  
Color = 255 0 0 *"2+B&Y  
END Tb}4wLu  
>{]%F*p4  
DECLARE SOURCE src h^45,E C  
A|[?#S((]  
BEGIN src 1nM  #kJ"  
geometry = Cylinder001 Z#jZRNU%ox  
emission = LAMBERT G>_*djUf  
power = 200 urc| D0n  
unit = Lumen ITQA0PISL  
spectrum = BLACKBODY 5000 eIF5ZPSZi  
END EP&,MYI%E  
DECLARE CURVE2D_CONIC MyCurve2DConic001 KkyVSoD\  
BEGIN MyCurve2DConic001 tFn)aa~L  
Position = 0 -0.8 HWAdhDZ  
Orientation = 1 0 @IKYh{j4  
Radius = 1 P8 c`fbkX2  
Conic = 0 #Pau\|e_  
XMin = -1 FXCMR\
BsQ  
XMax = 1 YqD=>P[O  
END 2W(s(-hD  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 _ye |Y  
BEGIN MyVolumeExtrusion001 /62!cp/F/D  
Position = 0 30 0 w"F 9l  
Vector_I = 1 0 0 ,t744k')  
Vector_J = 0 0 1 N% B>M7-=  
Generatrix = MYCURVE2DCONIC001 ODN/G%l  
Length = 30 s)t@ol  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 wm@@$  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 MY)O^I X$  
Color = 255 155 255 octL"t8w  
END  dFc':|  
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粗看了一下： fbvL7* (  
光源定义了光强、散射方式、光谱， n&/ `  
怎么没有定义光源的出光角度？