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. "|KD$CY  
多试几次就可以了.

引用第23楼286974144于2007-10-19 15:17发表的  : i[a1ij=  
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. KPMId`kf  
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 OVgx2_F  
The Backlight Utility was helpful to build the backlight system quickly. However, <\C/;  
the bumps must be parameterized in order to get the desired output distribution. QpC,komLJ  
You can do this easily using the LightTools Properties dialog box. x;p7n2_  
1.In the System Navigator, expand the items LightGuide, CubePrimitive_1, QvjOOc@k~n  
BottomSurface, and Zones. Then, select Texture, as shown in the following >xJh!w<
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figure. sJq^>"|J  
2.Right-click and select Properties on the shortcut menu. ZVX!=3VT  
3.Select the Geometry tab. pXv@QD#!  
4.Select the arrow next to the Placement drop-down list, and select Bezier. Click dpWBY3(7a  
Apply. B2DWSp-8*  
ghtTools Introductory Tutorial

The default number of bumps is 100 (10 X 10). You need to change these Az"(I>VfD  
parameters to match your design. Note that LightTools allows many other DEcsFC/SK  
placement options, but you will use the Bezier placement option for this lyYi2& %  
example. 3 2MdDa
 
5.On both the X Placement tab and Y Placement tab, change the Number of ="*:H)
  
Bumps parameter to 300, as shown in the following figure. Click Apply after ;)nV  
each change. <>tQa5;  
6.Click OK to close the dialog box. bO2s'!x  
Note that the number of bumps is 300 X 300, which results in about 90,000 vOKWi:-U  
bumps on the surface (~ 5143 bumps/in2). These bumps are arranged in a ;mw$(ZKa#  
manner defined by the Bezier parameterization option. Please see Chapter 5 of d5O_~xf&  
the LightTools Core Module User’s Guide for more information. With the {j{H@rHuy  
current parameter values, the Bezier option varies the bump spacing along the =Pu;wx9  
length of the light guide. The spacing in the orthogonal direction is constant. 'ixu+.ZL/  
The X and Y refer to the local coordinate system of the surface. jR[3{ Reo  
LightTools Introductory Tutorial * 91 8vL2<VT;  
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HAPTER 5 Introduction to Backlight Design (+^z9p7/!  
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Examining Surface Properties eumpNF%$  
Using the methods described in previous chapters, you may want to check your ?=\&O=_ln  
model before you run a simulation. 6~@S,i1  
Click on various parts of the model in the 3D Design View. Or use the System YAoGVey  
Navigator to select different surfaces and view their Properties. 0~:Eo89  
1.In the System Navigator, click to open BottomSurface of the LightGuide, then WK<:(vu.  
click Zones, and then click Texture. 3r]:k)J  
2.Select SphericalElement, and then right-click and select Properties from the `$5 QTte  
shortcut menu. The Shape tab shows you a graphical representation of the 2sryhS'(H  
spherical bump shape that is the bottom of the light guide. QxaW
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You might be curious as to why you cannot see the 3D texture property zones you d}2$J1`  
defined. They are invisible by default, because drawing thousands of texture {r,MRZaa  
elements can make displaying and exploring the model somewhat slow. If you L~PBD?l  
choose to make them visible, 3D textures are displayed in wireframe, even if the 2Vn~o_ga  
display mode is set to translucent. Wireframe rendering displays a bit faster and f*ICZM  
shows more of the technical details. i6@c@n  
92 * LightTools Introductory Tutorial XFiP8aX<  
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HAPTER 5 Introduction to Backlight Design \(db1zmS~  
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1.Rotate and zoom the model to that you can see something like the illustration Q*J8`J:#^R  
below: ]?#E5(V@x  
. knsTy0]  
2.To reveal the Property Zones: jrKRXS  
a.Right-click in the Design View and select View Preferences to display this sBLf(Q,  
dialog box. >Yf)]e-  
b.On the Visibility tab, click the Property Zone check box to turn it on. Z@G[\"   
c.Click OK. \[57Dmo  
You will see the wire frame rendering of the spherical bumps on the ~Gz b^  
bottom surface, and a solid color above it. The solid color is the 3D texture Q2L>P<87T  
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 g"dq;H  
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 =Lc!L !(,b  
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 5OR2\h!XZt  
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 5p}ri,Y<  
贴上你在cad中读出的数据就好了。半径的参数一样办理 v/m} {&K  
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