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. iN)@Cu7  
多试几次就可以了.

引用第23楼286974144于2007-10-19 15:17发表的  : ~9n@MPS^!  
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 9?w _  
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 *0iP*j/]  
The Backlight Utility was helpful to build the backlight system quickly. However,
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the bumps must be parameterized in order to get the desired output distribution. $""[( d?0  
You can do this easily using the LightTools Properties dialog box. z(m*]kpL"  
1.In the System Navigator, expand the items LightGuide, CubePrimitive_1, "au"\}   
BottomSurface, and Zones. Then, select Texture, as shown in the following A ssf f;  
figure. n% *u;iG  
2.Right-click and select Properties on the shortcut menu. 0>'1|8+`(z  
3.Select the Geometry tab. m
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4.Select the arrow next to the Placement drop-down list, and select Bezier. Click l5R H~F  
Apply. tSm|U<  
ghtTools Introductory Tutorial

The default number of bumps is 100 (10 X 10). You need to change these \nJrjHA  
parameters to match your design. Note that LightTools allows many other 'UB<;6wy  
placement options, but you will use the Bezier placement option for this j{HxX  
example. `$i`i'S  
5.On both the X Placement tab and Y Placement tab, change the Number of fer'2(G?W  
Bumps parameter to 300, as shown in the following figure. Click Apply after 9LFg":  
each change. J#D!J8KP7  
6.Click OK to close the dialog box. L*5&hPU  
Note that the number of bumps is 300 X 300, which results in about 90,000 tf/ f-S  
bumps on the surface (~ 5143 bumps/in2). These bumps are arranged in a Q!"Li  
manner defined by the Bezier parameterization option. Please see Chapter 5 of L7KHs'c*  
the LightTools Core Module User’s Guide for more information. With the bc&:v$EGy  
current parameter values, the Bezier option varies the bump spacing along the kL&^/([9  
length of the light guide. The spacing in the orthogonal direction is constant. $;@s  
The X and Y refer to the local coordinate system of the surface. :he
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LightTools Introductory Tutorial * 91 MTF:mL
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HAPTER 5 Introduction to Backlight Design P#yS]F/  
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Examining Surface Properties
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Using the methods described in previous chapters, you may want to check your YY.;J3C  
model before you run a simulation.  \n`]QN  
Click on various parts of the model in the 3D Design View. Or use the System O<+C$J|  
Navigator to select different surfaces and view their Properties. VRxBi!d  
1.In the System Navigator, click to open BottomSurface of the LightGuide, then C ]#R7G  
click Zones, and then click Texture. H8\N~>  
2.Select SphericalElement, and then right-click and select Properties from the Xu'u"amt  
shortcut menu. The Shape tab shows you a graphical representation of the NfN#q:w1  
spherical bump shape that is the bottom of the light guide. B4{A(-Tc  
You might be curious as to why you cannot see the 3D texture property zones you Ck[Z(=b$$:  
defined. They are invisible by default, because drawing thousands of texture xi.;`Q^#  
elements can make displaying and exploring the model somewhat slow. If you !|`YNsR  
choose to make them visible, 3D textures are displayed in wireframe, even if the E-Mp|y/V  
display mode is set to translucent. Wireframe rendering displays a bit faster and 
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shows more of the technical details. >#V8l@IH  
92 * LightTools Introductory Tutorial 7tyn?t0n  
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HAPTER 5 Introduction to Backlight Design (K2 p3M^  
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1.Rotate and zoom the model to that you can see something like the illustration Pajr`gU  
below: 1ltoLd\{  
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2.To reveal the Property Zones: HFf| >&c&  
a.Right-click in the Design View and select View Preferences to display this UL{Xe&sT  
dialog box. xXyzzr1[  
b.On the Visibility tab, click the Property Zone check box to turn it on. 7g=Ze~aq  
c.Click OK. M"P$hb'F  
You will see the wire frame rendering of the spherical bumps on the a1GyI  
bottom surface, and a solid color above it. The solid color is the 3D texture Xe%n.DW m  
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 6vmkDL8{A8  
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 c[Y7tj%y  
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 t<$yxD/R  
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 7IFUsli]  
贴上你在cad中读出的数据就好了。半径的参数一样办理 R(hqBa/V  
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