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. g_*T?;!.U  
多试几次就可以了.

引用第23楼286974144于2007-10-19 15:17发表的  : ukgAI<O%  
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@;QjhjiJ  
多试几次就可以了.

js^ ,(CS  
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 rj]F87"  
The Backlight Utility was helpful to build the backlight system quickly. However, x}/,yaWZ  
the bumps must be parameterized in order to get the desired output distribution. {yAL+}  
You can do this easily using the LightTools Properties dialog box. /gcEw!JS  
1.In the System Navigator, expand the items LightGuide, CubePrimitive_1, y
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BottomSurface, and Zones. Then, select Texture, as shown in the following 5 *}R$  
figure. <Tw>|cFT  
2.Right-click and select Properties on the shortcut menu.
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3.Select the Geometry tab. KT|R
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4.Select the arrow next to the Placement drop-down list, and select Bezier. Click ] H~4  
Apply. vgt]:$  
ghtTools Introductory Tutorial

The default number of bumps is 100 (10 X 10). You need to change these zepop19  
parameters to match your design. Note that LightTools allows many other vzzE-(\\e  
placement options, but you will use the Bezier placement option for this !?f5>Bl  
example. v$~QCtc  
5.On both the X Placement tab and Y Placement tab, change the Number of j hYToMq  
Bumps parameter to 300, as shown in the following figure. Click Apply after (2ur5uk+  
each change. 3uU]kD^  
6.Click OK to close the dialog box. wS+V]`b  
Note that the number of bumps is 300 X 300, which results in about 90,000 ~"pKe~h   
bumps on the surface (~ 5143 bumps/in2). These bumps are arranged in a 3K&4i'}V  
manner defined by the Bezier parameterization option. Please see Chapter 5 of @WH@^u  
the LightTools Core Module User’s Guide for more information. With the AWjJ{#W>9  
current parameter values, the Bezier option varies the bump spacing along the N#V.1<Y  
length of the light guide. The spacing in the orthogonal direction is constant. /[:dp<  
The X and Y refer to the local coordinate system of the surface. /-zXM;h  
LightTools Introductory Tutorial * 91 =4uSFK_L  
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HAPTER 5 Introduction to Backlight Design &uP~rEJl+  
C YzosZ! L!<  
Examining Surface Properties )}Q(Tl\$  
Using the methods described in previous chapters, you may want to check your ?oZR.D|SZ  
model before you run a simulation. 7e7 M@8+4  
Click on various parts of the model in the 3D Design View. Or use the System Er/bO  
Navigator to select different surfaces and view their Properties. ~pa!w?/bQ  
1.In the System Navigator, click to open BottomSurface of the LightGuide, then ~/NKw:  
click Zones, and then click Texture. ZnFi<@UB)  
2.Select SphericalElement, and then right-click and select Properties from the A[G0 .>Wk  
shortcut menu. The Shape tab shows you a graphical representation of the |r ue=QZ  
spherical bump shape that is the bottom of the light guide. zX5!vaEv  
You might be curious as to why you cannot see the 3D texture property zones you %6Q4yk  
defined. They are invisible by default, because drawing thousands of texture >56>*BHD  
elements can make displaying and exploring the model somewhat slow. If you pZ`|iLNl-  
choose to make them visible, 3D textures are displayed in wireframe, even if the bNT9 H`P  
display mode is set to translucent. Wireframe rendering displays a bit faster and ob+euCuJ  
shows more of the technical details. xw{-9k-~  
92 * LightTools Introductory Tutorial #T`t79*N  
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HAPTER 5 Introduction to Backlight Design y"]n:M:(  
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1.Rotate and zoom the model to that you can see something like the illustration  zYXV;  
below: [dtbkQt,c  
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2.To reveal the Property Zones: ?!qY,9lhH  
a.Right-click in the Design View and select View Preferences to display this r"$.4@gc  
dialog box. =b;>?dP  
b.On the Visibility tab, click the Property Zone check box to turn it on. Vcd.mE(t%  
c.Click OK. Pxn,Qw*  
You will see the wire frame rendering of the spherical bumps on the MO;X>D=  
bottom surface, and a solid color above it. The solid color is the 3D texture 2VW}9O  
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 )O:0]=#))  
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 ~  T>U  
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 0'nikLaKy  
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 pW4 cX  
贴上你在cad中读出的数据就好了。半径的参数一样办理 `est|C '+  
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