[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 y"VrR  
DECLARE CYLINDER Cylinder001 ^{\gD23  
BEGIN Cylinder001 JbN@AX:%  
Position = 0 0 -0.3 SJ$N]<d  
Vector_axis = 0 1 0 D5x }V  
Radius = 0.2 dXR70/  
Length = 60 P[{qp8(g  
Surface = SURFACE_LAMP RSEo'2  
material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 ljg2P5  
s*$Re)}S  
Color = 255 0 0 m:|jv|f  
END _hT-5)1r  
8l,`~jvU!*  
DECLARE SOURCE src (`h$+p^-y  
gx+bKGB`  
BEGIN src OL+dx`Y  
geometry = Cylinder001 3Jt_=!qlo  
emission = LAMBERT V?"X0>]0  
power = 200 GQ<]Sd}
[  
unit = Lumen r~ gjn`W  
spectrum = BLACKBODY 5000 `tZu~ n  
END H}G=%j0  
DECLARE CURVE2D_CONIC MyCurve2DConic001 i oCoFj  
BEGIN MyCurve2DConic001 V mxVE=l  
Position = 0 -0.8 *=UxX ]0y  
Orientation = 1 0 V/w:^@5+p  
Radius = 1 E#3KWp#
M  
Conic = 0 +oKp>-  
XMin = -1 .KiJq:$H  
XMax = 1 Q(@/,%EF  
END vd>K=! J  
DECLARE VOLUME_EXTRUSION MyVolumeExtrusion001 C? pi8Xg  
BEGIN MyVolumeExtrusion001 c`:
hE
Qs  
Position = 0 30 0 Wr3j8"f/  
Vector_I = 1 0 0 u{Jv6K,  
Vector_J = 0 0 1 ,nn5LQ|l.j  
Generatrix = MYCURVE2DCONIC001 OU)~ 02|\  
Length = 30 A)9[.fhx  
Surface = SIMPLE_SCATTERING_REFLECTION_ONLY 2.000000 10.000000 80.000000 25.000000 gq9D#B  
Material = BASIC_MATERIAL PMMA 1.49000 1.70e-003 57.20 !: e(-  
Color = 255 155 255 'u@_4wWp  
END ^`b&fbv  
|Z%I3-z_DS  

粗看了一下： JTT"t@__  
光源定义了光强、散射方式、光谱， M%=V vE.I  
怎么没有定义光源的出光角度？