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. )=5
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多试几次就可以了.

引用第23楼286974144于2007-10-19 15:17发表的  : Apbgm[m|{  
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. |<!xD iB  
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 rbc7CPq_^  
The Backlight Utility was helpful to build the backlight system quickly. However, Q3rLCg,;  
the bumps must be parameterized in order to get the desired output distribution. mu$rG3M  
You can do this easily using the LightTools Properties dialog box. X6so)1jJ  
1.In the System Navigator, expand the items LightGuide, CubePrimitive_1, 0 LQ%tn  
BottomSurface, and Zones. Then, select Texture, as shown in the following rp,Us#>6  
figure. rj/1AK  
2.Right-click and select Properties on the shortcut menu. y,Z2`Zmu  
3.Select the Geometry tab. CG]/.  
4.Select the arrow next to the Placement drop-down list, and select Bezier. Click uxbLoE  
Apply. iH>I
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ghtTools Introductory Tutorial

The default number of bumps is 100 (10 X 10). You need to change these R#4f_9e<Z  
parameters to match your design. Note that LightTools allows many other oQK,#>rv  
placement options, but you will use the Bezier placement option for this p Cgm!t?/  
example. 'RZ0,SK'  
5.On both the X Placement tab and Y Placement tab, change the Number of He1~27+99  
Bumps parameter to 300, as shown in the following figure. Click Apply after =4 NKXP~C  
each change. 
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6.Click OK to close the dialog box. ?G 'sb}.  
Note that the number of bumps is 300 X 300, which results in about 90,000 mNKcaM?h  
bumps on the surface (~ 5143 bumps/in2). These bumps are arranged in a +zZ]Txb(  
manner defined by the Bezier parameterization option. Please see Chapter 5 of S~U5xM^s  
the LightTools Core Module User’s Guide for more information. With the
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current parameter values, the Bezier option varies the bump spacing along the 2Ws'3Jz  
length of the light guide. The spacing in the orthogonal direction is constant. rm4t  
The X and Y refer to the local coordinate system of the surface. lw_@(E]E  
LightTools Introductory Tutorial * 91 iz3Hoj  
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HAPTER 5 Introduction to Backlight Design %J+k.UrM  
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Examining Surface Properties &(h@]F!  
Using the methods described in previous chapters, you may want to check your xtK}XEhG!  
model before you run a simulation. &n]]OPo  
Click on various parts of the model in the 3D Design View. Or use the System TGuCIc0B{  
Navigator to select different surfaces and view their Properties. L'O=;C"f  
1.In the System Navigator, click to open BottomSurface of the LightGuide, then }c=YiH,o  
click Zones, and then click Texture. zQoJ8i>  
2.Select SphericalElement, and then right-click and select Properties from the /$^SiE+N  
shortcut menu. The Shape tab shows you a graphical representation of the J|CCTXT  
spherical bump shape that is the bottom of the light guide. y\Wp}}  
You might be curious as to why you cannot see the 3D texture property zones you Lw`}o`D  
defined. They are invisible by default, because drawing thousands of texture 3:bP>l!  
elements can make displaying and exploring the model somewhat slow. If you 8i Ew;I_  
choose to make them visible, 3D textures are displayed in wireframe, even if the y\R-=Am".  
display mode is set to translucent. Wireframe rendering displays a bit faster and pV*d"~T  
shows more of the technical details. (dP9`Na]  
92 * LightTools Introductory Tutorial zz #IY'dwT  
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HAPTER 5 Introduction to Backlight Design qdo_YPG  
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1.Rotate and zoom the model to that you can see something like the illustration j43i:c;F  
below: Awe'MGp%  
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2.To reveal the Property Zones: ,{d=<j_  
a.Right-click in the Design View and select View Preferences to display this 5hfx2O)  
dialog box. {BZ0x2  
b.On the Visibility tab, click the Property Zone check box to turn it on. U04)XfO;]  
c.Click OK. m5
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You will see the wire frame rendering of the spherical bumps on the q#`;G,rs  
bottom surface, and a solid color above it. The solid color is the 3D texture uFL!*#A  
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 }3R
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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 *2Q x69`  
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 GuQ#  
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 }R`}Ey|{  
贴上你在cad中读出的数据就好了。半径的参数一样办理 ]#dZLm_  
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