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. VjM3M<!g>M  
多试几次就可以了.

引用第23楼286974144于2007-10-19 15:17发表的  : ]5Uuz?:e  
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. '9V/w[mI  
多试几次就可以了.

]^~}/@  
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 cfLLFPhv)  
The Backlight Utility was helpful to build the backlight system quickly. However, l76=6Vtb  
the bumps must be parameterized in order to get the desired output distribution. A5XMA|2_  
You can do this easily using the LightTools Properties dialog box. ?,vLRq.  
1.In the System Navigator, expand the items LightGuide, CubePrimitive_1, k)p`x"To  
BottomSurface, and Zones. Then, select Texture, as shown in the following ]" 'yf;g  
figure. *d1BpR%  
2.Right-click and select Properties on the shortcut menu. ;'"'|} xn  
3.Select the Geometry tab. }@r23g%  
4.Select the arrow next to the Placement drop-down list, and select Bezier. Click ) O0Cz n  
Apply. tDK@?PfKz  
ghtTools Introductory Tutorial

The default number of bumps is 100 (10 X 10). You need to change these %rW}x[M%w?  
parameters to match your design. Note that LightTools allows many other h[ .  
placement options, but you will use the Bezier placement option for this }.&nEi`  
example. 37U8<  
5.On both the X Placement tab and Y Placement tab, change the Number of `0d0T~  
Bumps parameter to 300, as shown in the following figure. Click Apply after V*p[6{
U0  
each change. 7H7 Xbi@  
6.Click OK to close the dialog box. )@g[aRFa  
Note that the number of bumps is 300 X 300, which results in about 90,000 b;i*}4h!  
bumps on the surface (~ 5143 bumps/in2). These bumps are arranged in a 8em'7hR9  
manner defined by the Bezier parameterization option. Please see Chapter 5 of V%,,GmiU]  
the LightTools Core Module User’s Guide for more information. With the x5lVb$!G  
current parameter values, the Bezier option varies the bump spacing along the d<m;Q}/l&h  
length of the light guide. The spacing in the orthogonal direction is constant. &;BhL%)}  
The X and Y refer to the local coordinate system of the surface. ^{Y,`F  
LightTools Introductory Tutorial * 91 C;BO6$*_e  
5aQ)qUgAW  
HAPTER 5 Introduction to Backlight Design $S6(V}yh  
C LRJX>+@  
Examining Surface Properties `Skvqo(5:  
Using the methods described in previous chapters, you may want to check your QQJGqM3a2  
model before you run a simulation. AiqKf=  
Click on various parts of the model in the 3D Design View. Or use the System  ?8>a;0  
Navigator to select different surfaces and view their Properties. PR{ubMn  
1.In the System Navigator, click to open BottomSurface of the LightGuide, then #7uH>\r  
click Zones, and then click Texture. 6{2y$'m8  
2.Select SphericalElement, and then right-click and select Properties from the *p{p.%Qs:  
shortcut menu. The Shape tab shows you a graphical representation of the |~9rak,  
spherical bump shape that is the bottom of the light guide. l)u%`Hcn  
You might be curious as to why you cannot see the 3D texture property zones you dwA"QVp{  
defined. They are invisible by default, because drawing thousands of texture zEQ]5>mG  
elements can make displaying and exploring the model somewhat slow. If you ^twyy9VR  
choose to make them visible, 3D textures are displayed in wireframe, even if the /X}1%p  
display mode is set to translucent. Wireframe rendering displays a bit faster and ql?w6qFs]  
shows more of the technical details. <a R  
92 * LightTools Introductory Tutorial bmT%?it  
5wK==hZ  
HAPTER 5 Introduction to Backlight Design 1mFH7A($  
C 4H

8r[  
1.Rotate and zoom the model to that you can see something like the illustration }&v}S6T  
below: Qf:e;1F!  
. t>[QW`EeP  
2.To reveal the Property Zones: (kL"*y/"p  
a.Right-click in the Design View and select View Preferences to display this P]+B}))  
dialog box. ~kc#
"^sJ  
b.On the Visibility tab, click the Property Zone check box to turn it on. !'$*Z(  
c.Click OK. =ejcP&-V/  
You will see the wire frame rendering of the spherical bumps on the H I9/  
bottom surface, and a solid color above it. The solid color is the 3D texture cW3'057  
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 5bb#{?2i  
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 jdG'sITv  
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 CH7a4qL`  
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 u^Cls!C  
贴上你在cad中读出的数据就好了。半径的参数一样办理 gwB,*.z  
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