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. rF>:pS,`&  
多试几次就可以了.

引用第23楼286974144于2007-10-19 15:17发表的  : |r%6;8A]i  
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. u\Tq5PYXt  
多试几次就可以了.

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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 zw_Xh~4"b  
The Backlight Utility was helpful to build the backlight system quickly. However,  &)T5V  
the bumps must be parameterized in order to get the desired output distribution. Z[[qW f  
You can do this easily using the LightTools Properties dialog box. x3
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1.In the System Navigator, expand the items LightGuide, CubePrimitive_1, To
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BottomSurface, and Zones. Then, select Texture, as shown in the following B#OnooJI  
figure. bd5\Rt  
2.Right-click and select Properties on the shortcut menu. LD0x 4zm$m  
3.Select the Geometry tab. ;wa-\Z  
4.Select the arrow next to the Placement drop-down list, and select Bezier. Click kD8$ir'UYG  
Apply. RplLU7  
ghtTools Introductory Tutorial

The default number of bumps is 100 (10 X 10). You need to change these =8?y$WE  
parameters to match your design. Note that LightTools allows many other !ow:P8K?  
placement options, but you will use the Bezier placement option for this K`{P/w  
example.  z"Miy  
5.On both the X Placement tab and Y Placement tab, change the Number of HIsIW%B  
Bumps parameter to 300, as shown in the following figure. Click Apply after jhgS@g=@ZC  
each change. MxQhkY-=  
6.Click OK to close the dialog box. HkVnTC  
Note that the number of bumps is 300 X 300, which results in about 90,000 xQ+UZ
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bumps on the surface (~ 5143 bumps/in2). These bumps are arranged in a ywTt<;  
manner defined by the Bezier parameterization option. Please see Chapter 5 of 7 XE&[o  
the LightTools Core Module User’s Guide for more information. With the SR!EQ<  
current parameter values, the Bezier option varies the bump spacing along the /99S<U2ej  
length of the light guide. The spacing in the orthogonal direction is constant. *:gx1wd  
The X and Y refer to the local coordinate system of the surface. ~_8
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LightTools Introductory Tutorial * 91 6Ri+DPf:  
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HAPTER 5 Introduction to Backlight Design >'ev_eAk  
C f>!)y-7  
Examining Surface Properties 6?$yBu9l  
Using the methods described in previous chapters, you may want to check your .ZQD`SRrI  
model before you run a simulation. p!B&&)&db  
Click on various parts of the model in the 3D Design View. Or use the System ]9qY(m  
Navigator to select different surfaces and view their Properties. +O"!*  
1.In the System Navigator, click to open BottomSurface of the LightGuide, then 6B`XHdCq  
click Zones, and then click Texture. 'K&^y%~py,  
2.Select SphericalElement, and then right-click and select Properties from the ndg1E;>  
shortcut menu. The Shape tab shows you a graphical representation of the !xk`o
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spherical bump shape that is the bottom of the light guide. '5V}Z3zJ/  
You might be curious as to why you cannot see the 3D texture property zones you H1>~,zc>E  
defined. They are invisible by default, because drawing thousands of texture _/V<iv  
elements can make displaying and exploring the model somewhat slow. If you (+uM |a  
choose to make them visible, 3D textures are displayed in wireframe, even if the 0Xo>f"2<f  
display mode is set to translucent. Wireframe rendering displays a bit faster and G\&9.@`k  
shows more of the technical details. ~wYGTm=(n  
92 * LightTools Introductory Tutorial PL} Wu=  
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HAPTER 5 Introduction to Backlight Design xB-\yWDZe  
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1.Rotate and zoom the model to that you can see something like the illustration 4fauI%kc  
below: 'F2g2W`  
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2.To reveal the Property Zones: 6`Hd)T5{w  
a.Right-click in the Design View and select View Preferences to display this *$e1Bv6 $  
dialog box. Db4(E*/pj!  
b.On the Visibility tab, click the Property Zone check box to turn it on. O|K-UTWH%  
c.Click OK. BOt1J_;(rO  
You will see the wire frame rendering of the spherical bumps on the X* 4C?v  
bottom surface, and a solid color above it. The solid color is the 3D texture _D+pJ{@W  
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 $^:s)Yv  
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 a = *'  
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 ^F)t>K$0m  
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 M^ZEAZi  
贴上你在cad中读出的数据就好了。半径的参数一样办理 o5B]?ekpq  
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