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. ]H#Rm#q  
多试几次就可以了.

引用第23楼286974144于2007-10-19 15:17发表的  : \W`}L  
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. FW)^O%2s  
多试几次就可以了.

#EmffVtY  
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 ST:
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The Backlight Utility was helpful to build the backlight system quickly. However, }+{*, z  
the bumps must be parameterized in order to get the desired output distribution. hmBnV  
You can do this easily using the LightTools Properties dialog box. oDW<e'Jm  
1.In the System Navigator, expand the items LightGuide, CubePrimitive_1, !$p2z_n$@.  
BottomSurface, and Zones. Then, select Texture, as shown in the following 7~kpRa@\P  
figure. })zB".  
2.Right-click and select Properties on the shortcut menu. _b!;(~@p  
3.Select the Geometry tab. h/1nm U]  
4.Select the arrow next to the Placement drop-down list, and select Bezier. Click m]0^  
Apply. Siz!/O!'  
ghtTools Introductory Tutorial

The default number of bumps is 100 (10 X 10). You need to change these RwAbIXG{0  
parameters to match your design. Note that LightTools allows many other y:g7'+c  
placement options, but you will use the Bezier placement option for this r/CEYEJ&X  
example. ;Cr_NP[8|j  
5.On both the X Placement tab and Y Placement tab, change the Number of i{tTUA  
Bumps parameter to 300, as shown in the following figure. Click Apply after gx!*O<|e4  
each change. +A8=R%&b)[  
6.Click OK to close the dialog box. L4YVH2`0)  
Note that the number of bumps is 300 X 300, which results in about 90,000 O+G~Qp0b>  
bumps on the surface (~ 5143 bumps/in2). These bumps are arranged in a ]z-']R;  
manner defined by the Bezier parameterization option. Please see Chapter 5 of 5
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the LightTools Core Module User’s Guide for more information. With the =bs.2aN&^  
current parameter values, the Bezier option varies the bump spacing along the ! Q|J']|  
length of the light guide. The spacing in the orthogonal direction is constant. My]+?.Ru  
The X and Y refer to the local coordinate system of the surface. WF ?/GN  
LightTools Introductory Tutorial * 91 -yX

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HAPTER 5 Introduction to Backlight Design S2J#b"Y  
C do:QH.q8)  
Examining Surface Properties "n{9- VEmN  
Using the methods described in previous chapters, you may want to check your YPF&U4CN  
model before you run a simulation. x @1px&^  
Click on various parts of the model in the 3D Design View. Or use the System +M44XhT  
Navigator to select different surfaces and view their Properties. KY4d+~2  
1.In the System Navigator, click to open BottomSurface of the LightGuide, then y#]}5gJ  
click Zones, and then click Texture. `fQM  
2.Select SphericalElement, and then right-click and select Properties from the 'RDWU7c9]  
shortcut menu. The Shape tab shows you a graphical representation of the La`h$=#`  
spherical bump shape that is the bottom of the light guide. JQ*D  
You might be curious as to why you cannot see the 3D texture property zones you (b
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defined. They are invisible by default, because drawing thousands of texture "DVt3E  
elements can make displaying and exploring the model somewhat slow. If you 7<h.KZPc  
choose to make them visible, 3D textures are displayed in wireframe, even if the kx|me~I  
display mode is set to translucent. Wireframe rendering displays a bit faster and yB-.sGu  
shows more of the technical details. HzP.aw4  
92 * LightTools Introductory Tutorial yJnPD/i  
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HAPTER 5 Introduction to Backlight Design !+m@AQ:,  
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1.Rotate and zoom the model to that you can see something like the illustration ]}BB/KQy^  
below: FQ+8J7  
. *Y8XP8u/  
2.To reveal the Property Zones:  %)pP[[h  
a.Right-click in the Design View and select View Preferences to display this riID,aut  
dialog box. 'b8R#R\P  
b.On the Visibility tab, click the Property Zone check box to turn it on. aQ&uC )w  
c.Click OK. {J{1`@  
You will see the wire frame rendering of the spherical bumps on the jyNb(Z  
bottom surface, and a solid color above it. The solid color is the 3D texture FI\IY R  
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 8zAg;b[  
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 [G\o+D?2  
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 Y:wF5pp;  
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 f7Zf}1|  
贴上你在cad中读出的数据就好了。半径的参数一样办理 L.kD,'G}>  
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