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. ,#V}qSKUS  
多试几次就可以了.

引用第23楼286974144于2007-10-19 15:17发表的  : {b,#l]v  
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.
E'^$~h$  
多试几次就可以了.

E``\Jre@  
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 j<PpCL_8%  
The Backlight Utility was helpful to build the backlight system quickly. However, I~T~!^}U  
the bumps must be parameterized in order to get the desired output distribution. zW:r7 P.  
You can do this easily using the LightTools Properties dialog box. s<'WTgy1i  
1.In the System Navigator, expand the items LightGuide, CubePrimitive_1, #v\o@ArX  
BottomSurface, and Zones. Then, select Texture, as shown in the following A|<i7QVY  
figure. Fx3X  
2.Right-click and select Properties on the shortcut menu. &pFP=|Pq  
3.Select the Geometry tab. &'"dYZj{  
4.Select the arrow next to the Placement drop-down list, and select Bezier. Click ,tl(\
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Apply. (Y~gItej  
ghtTools Introductory Tutorial

The default number of bumps is 100 (10 X 10). You need to change these ?XnKKw\  
parameters to match your design. Note that LightTools allows many other -`ss7j&b3  
placement options, but you will use the Bezier placement option for this 2|JtRE+  
example. @WnW @'*F  
5.On both the X Placement tab and Y Placement tab, change the Number of 4Ixu%  
Bumps parameter to 300, as shown in the following figure. Click Apply after q 1~3T;Il  
each change. ueLdjASJ  
6.Click OK to close the dialog box. 'M=V{.8U  
Note that the number of bumps is 300 X 300, which results in about 90,000 AkA2/7<[  
bumps on the surface (~ 5143 bumps/in2). These bumps are arranged in a W;QU6z>  
manner defined by the Bezier parameterization option. Please see Chapter 5 of =q<t,UP8  
the LightTools Core Module User’s Guide for more information. With the xi}3)5  
current parameter values, the Bezier option varies the bump spacing along the y1t,i. [  
length of the light guide. The spacing in the orthogonal direction is constant. j%Wip j;c  
The X and Y refer to the local coordinate system of the surface. d6zfP1lQ  
LightTools Introductory Tutorial * 91 iu'At7  
;hCUy=m.  
HAPTER 5 Introduction to Backlight Design _.+2sm   
C ~pPj  
Examining Surface Properties pe>[Ts`2F  
Using the methods described in previous chapters, you may want to check your *x@.$=NF"  
model before you run a simulation. `Oe"s_O#  
Click on various parts of the model in the 3D Design View. Or use the System 2SJ|$VsLaE  
Navigator to select different surfaces and view their Properties. #OVS]Asn}  
1.In the System Navigator, click to open BottomSurface of the LightGuide, then W3]?>sLE*  
click Zones, and then click Texture. 6rh^?B
  
2.Select SphericalElement, and then right-click and select Properties from the A9kn\U92  
shortcut menu. The Shape tab shows you a graphical representation of the \PM5B"MDZ  
spherical bump shape that is the bottom of the light guide. ^$~&e :{  
You might be curious as to why you cannot see the 3D texture property zones you MxLi'R=  
defined. They are invisible by default, because drawing thousands of texture r(p@{L185  
elements can make displaying and exploring the model somewhat slow. If you yBnUz"  
choose to make them visible, 3D textures are displayed in wireframe, even if the UsnIx54D3  
display mode is set to translucent. Wireframe rendering displays a bit faster and RFT`r  
shows more of the technical details. !f)^z9QX8  
92 * LightTools Introductory Tutorial [f#7~  
p.x!dt\1kC  
HAPTER 5 Introduction to Backlight Design 1aS66TS3  
C WNo<0|X  
1.Rotate and zoom the model to that you can see something like the illustration 7qEc9S@
 
below: #s0Wx47~  
. Ry"N_Fb  
2.To reveal the Property Zones: xM
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a.Right-click in the Design View and select View Preferences to display this o>@9[F,h+  
dialog box. #KwK``XC4  
b.On the Visibility tab, click the Property Zone check box to turn it on. 57`9{.HB  
c.Click OK. \!s0H_RJY  
You will see the wire frame rendering of the spherical bumps on the LHHDD\X   
bottom surface, and a solid color above it. The solid color is the 3D texture P>qDQ1  
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 M}qrF~   
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 ibv.M=  
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 *S] K
@g  
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 #ByrX\  
贴上你在cad中读出的数据就好了。半径的参数一样办理 ~.&2NUr  
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