如何在lighttools内给导光板加上网点？ [复制链接]

这个软件那里有下载的，请帮帮小弟，谢谢。

小弟是新手，请问相对于ASAP，在设计导光板方面，LT有什么优和缺，能比较下吗？？？谢了

请问auto-cad的网点怎么导入啊，还有那个autolist是一个什么样的插件哦？

把网点参数写成.TXT格式,在导光板的TEXTURE中导入就可以在LT 中得到网点,只是中间要有个坐标转换,计算要精解. knzo6  
多试几次就可以了.

引用第23楼286974144于2007-10-19 15:17发表的  : $"}[\>e*{  
把网点参数写成.TXT格式,在导光板的TEXTURE中导入就可以在LT 中得到网点,只是中间要有个坐标转换,计算要精解. e2>AL  
多试几次就可以了.

$Y\7E/T  
能详细说明吗？谢谢！

lighttools有一個插件叫DXF Tool，可以把autocad的圖檔先轉成DXF檔，然後再吃進去lighttools，也可以把lighttools的網點轉出成dxf檔，讓autocad讀。

Parameterize the Bumps 8o).q}>&  
The Backlight Utility was helpful to build the backlight system quickly. However, "`4M4`'  
the bumps must be parameterized in order to get the desired output distribution. W@%g_V}C*  
You can do this easily using the LightTools Properties dialog box. nU6UjC|3  
1.In the System Navigator, expand the items LightGuide, CubePrimitive_1, |TF6&$>d  
BottomSurface, and Zones. Then, select Texture, as shown in the following r Cz,XYV  
figure. 5yj6MaqJ  
2.Right-click and select Properties on the shortcut menu. 92N`Q}  
3.Select the Geometry tab. hvA|d=R(  
4.Select the arrow next to the Placement drop-down list, and select Bezier. Click ER}5`*X{  
Apply. rZ.z!10  
ghtTools Introductory Tutorial

The default number of bumps is 100 (10 X 10). You need to change these =8"xQ>D62  
parameters to match your design. Note that LightTools allows many other ~\
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placement options, but you will use the Bezier placement option for this ,,Ivey!kL  
example. D^U?!S&4~  
5.On both the X Placement tab and Y Placement tab, change the Number of u%=2g'+)_  
Bumps parameter to 300, as shown in the following figure. Click Apply after Qv]rj]%  
each change. Jc`tOp5  
6.Click OK to close the dialog box. K*p3#iB  
Note that the number of bumps is 300 X 300, which results in about 90,000 [dqh-7  
bumps on the surface (~ 5143 bumps/in2). These bumps are arranged in a $ERiBALN:  
manner defined by the Bezier parameterization option. Please see Chapter 5 of H
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the LightTools Core Module User’s Guide for more information. With the b dC  
current parameter values, the Bezier option varies the bump spacing along the 2i NZz  
length of the light guide. The spacing in the orthogonal direction is constant. cJM.Q_I}Y  
The X and Y refer to the local coordinate system of the surface. T{=&>pNK[  
LightTools Introductory Tutorial * 91 O.8k [Ht  
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HAPTER 5 Introduction to Backlight Design 7?);wh7`  
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Examining Surface Properties ,pVe@d'  
Using the methods described in previous chapters, you may want to check your ft4hzmuzM  
model before you run a simulation. ~]'yUd1gSZ  
Click on various parts of the model in the 3D Design View. Or use the System gyT0h?xDt  
Navigator to select different surfaces and view their Properties. C5e;U  
1.In the System Navigator, click to open BottomSurface of the LightGuide, then L@ejFXQg  
click Zones, and then click Texture. +%K~HYN  
2.Select SphericalElement, and then right-click and select Properties from the WSGho(\  
shortcut menu. The Shape tab shows you a graphical representation of the VssW
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spherical bump shape that is the bottom of the light guide. _g'x=VJF  
You might be curious as to why you cannot see the 3D texture property zones you 2h)Qz+|7  
defined. They are invisible by default, because drawing thousands of texture _c}# f\ +_  
elements can make displaying and exploring the model somewhat slow. If you Q-1Xgw!  
choose to make them visible, 3D textures are displayed in wireframe, even if the bU/YU0ZIT  
display mode is set to translucent. Wireframe rendering displays a bit faster and )l`VE_(|  
shows more of the technical details. "z_},TCy  
92 * LightTools Introductory Tutorial Nx E=^ v  
"98j-L=F+  
HAPTER 5 Introduction to Backlight Design ^uPg71r:  
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1.Rotate and zoom the model to that you can see something like the illustration kdhwnO  
below: Q\btl/?  
. Tk`|{Ph0  
2.To reveal the Property Zones: 2(Aw  
a.Right-click in the Design View and select View Preferences to display this P>03 DkbB  
dialog box. %joU}G;"  
b.On the Visibility tab, click the Property Zone check box to turn it on. e0<O6  
c.Click OK. 4U u`1gtz  
You will see the wire frame rendering of the spherical bumps on the u1\r:q  
bottom surface, and a solid color above it. The solid color is the 3D texture yD@eT:lyi  
of the BEFs (brightness-enhancing films) built automatically by the utility.   

看看这个有点帮助!

１　是autolisp 不是autolist IIAmx[ b  
2　在autocad中是用autolisp编写插件，实现将网点参数之坐标和半径读取并另存为 %.onO0})  
txt档的命令，只要有坐标和半径就ok了，excel档也无所谓。看你喜欢 DgY !)cS  
３　在lighttoools使用texture命令，建立一个圆点的矩阵，在坐标一栏中，把原有的删除 V)vik  
贴上你在cad中读出的数据就好了。半径的参数一样办理 14 (sp  
４　关键是cad中网点的坐标位置要和lighttools模型的位置对应的上，否则，你贴上去网点位置在离模型很远的地方就不厚道了