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. 6V*,nocL_+  
多试几次就可以了.

引用第23楼286974144于2007-10-19 15:17发表的  : c@Br_-  
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. ~_Fx2T:X  
多试几次就可以了.

DP0@x+`k  
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 r dSL  
The Backlight Utility was helpful to build the backlight system quickly. However, ij;NM:|Sd  
the bumps must be parameterized in order to get the desired output distribution. bsDA&~)s  
You can do this easily using the LightTools Properties dialog box. ` P
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1.In the System Navigator, expand the items LightGuide, CubePrimitive_1, :`zO%h  
BottomSurface, and Zones. Then, select Texture, as shown in the following EW(bM^dk}  
figure. c0'ryS_Z9  
2.Right-click and select Properties on the shortcut menu. ,wes
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3.Select the Geometry tab. R%RxF=@  
4.Select the arrow next to the Placement drop-down list, and select Bezier. Click xws{"m,NX~  
Apply. '"E!av>  
ghtTools Introductory Tutorial

The default number of bumps is 100 (10 X 10). You need to change these f(w>(1&/B  
parameters to match your design. Note that LightTools allows many other aE5-b ub c  
placement options, but you will use the Bezier placement option for this &]o-ZZX  
example. 8C@u+tx  
5.On both the X Placement tab and Y Placement tab, change the Number of H%@f ^  
Bumps parameter to 300, as shown in the following figure. Click Apply after 'JMW.;Lh?X  
each change. 8xO   
6.Click OK to close the dialog box. =0d|F 8  
Note that the number of bumps is 300 X 300, which results in about 90,000 Fn@`Bi?#q  
bumps on the surface (~ 5143 bumps/in2). These bumps are arranged in a " _2k3  
manner defined by the Bezier parameterization option. Please see Chapter 5 of uVn"L:_  
the LightTools Core Module User’s Guide for more information. With the qX-ptsQ  
current parameter values, the Bezier option varies the bump spacing along the _M`ZF*o=c  
length of the light guide. The spacing in the orthogonal direction is constant. a{T.U-0   
The X and Y refer to the local coordinate system of the surface. 6i[Ts0H%<!  
LightTools Introductory Tutorial * 91 'NlhLu  
pNb2t/8%%  
HAPTER 5 Introduction to Backlight Design gQ{ #C'  
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Examining Surface Properties %LMpErZO  
Using the methods described in previous chapters, you may want to check your nXRa_M(z8  
model before you run a simulation. 6]?%1HSi  
Click on various parts of the model in the 3D Design View. Or use the System skcyLIb  
Navigator to select different surfaces and view their Properties. cb9-~*1  
1.In the System Navigator, click to open BottomSurface of the LightGuide, then F<I*?${[  
click Zones, and then click Texture. tS2&S 6u  
2.Select SphericalElement, and then right-click and select Properties from the .kBkYK8*t  
shortcut menu. The Shape tab shows you a graphical representation of the M 5sk
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spherical bump shape that is the bottom of the light guide. src9EeiV  
You might be curious as to why you cannot see the 3D texture property zones you =PRQ3/?5  
defined. They are invisible by default, because drawing thousands of texture dxs5woP  
elements can make displaying and exploring the model somewhat slow. If you ZW [&7[4  
choose to make them visible, 3D textures are displayed in wireframe, even if the .#QE*<T)]  
display mode is set to translucent. Wireframe rendering displays a bit faster and $t;:"i>  
shows more of the technical details. `yv?PlKL  
92 * LightTools Introductory Tutorial 2&4nf/sE  
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HAPTER 5 Introduction to Backlight Design A2 +%  
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1.Rotate and zoom the model to that you can see something like the illustration 0*XsAz1,9  
below: |c/=9Bb  
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2.To reveal the Property Zones: x2B8G;6u  
a.Right-click in the Design View and select View Preferences to display this `"=>lu2H  
dialog box. ?sk>Mzr  
b.On the Visibility tab, click the Property Zone check box to turn it on. A]|w1nq  
c.Click OK. D -tRy~}  
You will see the wire frame rendering of the spherical bumps on the /2Wg=&H  
bottom surface, and a solid color above it. The solid color is the 3D texture vS8&,wJ!  
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 ?y?9;;  
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 ~2Wus8X-  
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 p}QDX*/sSu  
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 J1G}l5N  
贴上你在cad中读出的数据就好了。半径的参数一样办理 %D4)Bqr  
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