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. :-B+W9'5  
多试几次就可以了.

引用第23楼286974144于2007-10-19 15:17发表的  : L"qJZU  
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. Io1j%T#ZT  
多试几次就可以了.

H~a ~'tm  
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 %Mda<3P  
The Backlight Utility was helpful to build the backlight system quickly. However, o,*m,Qc  
the bumps must be parameterized in order to get the desired output distribution. qGk.7wf%  
You can do this easily using the LightTools Properties dialog box. ZnEgU}g<2  
1.In the System Navigator, expand the items LightGuide, CubePrimitive_1, uNN/o}Qx  
BottomSurface, and Zones. Then, select Texture, as shown in the following JQV%W+-@  
figure. g\q .  
2.Right-click and select Properties on the shortcut menu. B\J[O5},
 
3.Select the Geometry tab. Kh]es,$D  
4.Select the arrow next to the Placement drop-down list, and select Bezier. Click @t%da^-HS"  
Apply. >C0B!MT?3%  
ghtTools Introductory Tutorial

The default number of bumps is 100 (10 X 10). You need to change these u$\.aWol  
parameters to match your design. Note that LightTools allows many other /!]K+6>
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placement options, but you will use the Bezier placement option for this ~c EN=(Z~r  
example. 2*cNd}qr  
5.On both the X Placement tab and Y Placement tab, change the Number of 3f`Uoh+  
Bumps parameter to 300, as shown in the following figure. Click Apply after G*=HjLmZg  
each change. ]&8em1  
6.Click OK to close the dialog box. $DDO9  
Note that the number of bumps is 300 X 300, which results in about 90,000 Ua}R3^_)a  
bumps on the surface (~ 5143 bumps/in2). These bumps are arranged in a ;]LQ}^MP(  
manner defined by the Bezier parameterization option. Please see Chapter 5 of $_<[kci%  
the LightTools Core Module User’s Guide for more information. With the QbJ7$,4  
current parameter values, the Bezier option varies the bump spacing along the y
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length of the light guide. The spacing in the orthogonal direction is constant. ?p{-Yp*h  
The X and Y refer to the local coordinate system of the surface. < se~wR  
LightTools Introductory Tutorial * 91 h4n~V:nNm  
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HAPTER 5 Introduction to Backlight Design hC$e8t60  
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Examining Surface Properties D1RQkAZS  
Using the methods described in previous chapters, you may want to check your 3o rSk  
model before you run a simulation. #VhdYDbW  
Click on various parts of the model in the 3D Design View. Or use the System /Z2u0jNArP  
Navigator to select different surfaces and view their Properties. {MtJP:8Jp  
1.In the System Navigator, click to open BottomSurface of the LightGuide, then c]*y
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click Zones, and then click Texture. JAxzXAsAR  
2.Select SphericalElement, and then right-click and select Properties from the c44s@E  
shortcut menu. The Shape tab shows you a graphical representation of the !
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spherical bump shape that is the bottom of the light guide. Ic3a\FTr\  
You might be curious as to why you cannot see the 3D texture property zones you y>C !cYB  
defined. They are invisible by default, because drawing thousands of texture gbdzS6XW~  
elements can make displaying and exploring the model somewhat slow. If you PcsYy]Q/  
choose to make them visible, 3D textures are displayed in wireframe, even if the u&*[  
display mode is set to translucent. Wireframe rendering displays a bit faster and R*6TS"aL  
shows more of the technical details. 5%TSUU+<I  
92 * LightTools Introductory Tutorial N1Y uLG:  
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HAPTER 5 Introduction to Backlight Design H ezbCwsx&  
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1.Rotate and zoom the model to that you can see something like the illustration D?BegF  
below: 4l0>['K&{  
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2.To reveal the Property Zones: xjp0w7L)J  
a.Right-click in the Design View and select View Preferences to display this "C}<umJ'
 
dialog box. 3XY"s"
  
b.On the Visibility tab, click the Property Zone check box to turn it on. 1!zd#TX  
c.Click OK. n{W(8K6d@[  
You will see the wire frame rendering of the spherical bumps on the 5xc e1[  
bottom surface, and a solid color above it. The solid color is the 3D texture d\-*Fmp(S  
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 C6gp}%  
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 mY=sh{ir  
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 X#by Dg  
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 p! k~ufU  
贴上你在cad中读出的数据就好了。半径的参数一样办理 |)d%3s\  
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