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. [.Kp/,JY  
多试几次就可以了.

引用第23楼286974144于2007-10-19 15:17发表的  : w7Y@wa!  
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. 'U`;4AN  
多试几次就可以了.

rJCb8x+5a  
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 (?zD!% k  
The Backlight Utility was helpful to build the backlight system quickly. However, foQo`}"5  
the bumps must be parameterized in order to get the desired output distribution. ^ W?cuJ8  
You can do this easily using the LightTools Properties dialog box. "z3rH~q72  
1.In the System Navigator, expand the items LightGuide, CubePrimitive_1, )hj:Xpj9#  
BottomSurface, and Zones. Then, select Texture, as shown in the following 9_O4yTL  
figure. V8TdtGB.|h  
2.Right-click and select Properties on the shortcut menu. =uAy/S  
3.Select the Geometry tab. mJk\$/Kh  
4.Select the arrow next to the Placement drop-down list, and select Bezier. Click PMB4]p%o  
Apply. tS]  
ghtTools Introductory Tutorial

The default number of bumps is 100 (10 X 10). You need to change these %g.cE}^  
parameters to match your design. Note that LightTools allows many other 'Uf?-t*LT@  
placement options, but you will use the Bezier placement option for this SNH 3C1  
example. X4!7/&  
5.On both the X Placement tab and Y Placement tab, change the Number of #H>{>0q  
Bumps parameter to 300, as shown in the following figure. Click Apply after )XK\[tL  
each change. @q/g%-WNz  
6.Click OK to close the dialog box. SXOAa<u5  
Note that the number of bumps is 300 X 300, which results in about 90,000 l_+@Xpl  
bumps on the surface (~ 5143 bumps/in2). These bumps are arranged in a >dt*^}*  
manner defined by the Bezier parameterization option. Please see Chapter 5 of M[YFyM(
 
the LightTools Core Module User’s Guide for more information. With the \{lv~I  
current parameter values, the Bezier option varies the bump spacing along the J}X{8Ds9  
length of the light guide. The spacing in the orthogonal direction is constant. HN{c)DIm]  
The X and Y refer to the local coordinate system of the surface. _f^KP@^j  
LightTools Introductory Tutorial * 91 IFX$
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UlE%\L0GD&  
HAPTER 5 Introduction to Backlight Design fj5g\m  
C qMNWw\k  
Examining Surface Properties 5h#h>0F  
Using the methods described in previous chapters, you may want to check your cu0IFNF}[  
model before you run a simulation. XTJD>  
Click on various parts of the model in the 3D Design View. Or use the System e}e8WR=B  
Navigator to select different surfaces and view their Properties. <s'de$[  
1.In the System Navigator, click to open BottomSurface of the LightGuide, then +&`W\?.~  
click Zones, and then click Texture. EE!}$q
OR  
2.Select SphericalElement, and then right-click and select Properties from the ,94<j,"  
shortcut menu. The Shape tab shows you a graphical representation of the EbQLMLD%  
spherical bump shape that is the bottom of the light guide. PX 8UVA  
You might be curious as to why you cannot see the 3D texture property zones you [s{
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defined. They are invisible by default, because drawing thousands of texture 7mi!yTr}  
elements can make displaying and exploring the model somewhat slow. If you mUh]`/MK$  
choose to make them visible, 3D textures are displayed in wireframe, even if the #]@HsVXh7  
display mode is set to translucent. Wireframe rendering displays a bit faster and d qn5G!fI  
shows more of the technical details. Bvn3:+(47  
92 * LightTools Introductory Tutorial $>XeC}"x68  
i/ilG3m>  
HAPTER 5 Introduction to Backlight Design c~Ka) dF|  
C } p'ZMj&  
1.Rotate and zoom the model to that you can see something like the illustration /9w>:i81  
below: I9*cEZ!l=e  
. d!
y*z  
2.To reveal the Property Zones: =^nb+}Nz(  
a.Right-click in the Design View and select View Preferences to display this +J X;T(T  
dialog box. M<fhQJ  
b.On the Visibility tab, click the Property Zone check box to turn it on. H$(bSw$  
c.Click OK. \n)',4mY  
You will see the wire frame rendering of the spherical bumps on the QOF@DvQ  
bottom surface, and a solid color above it. The solid color is the 3D texture jmM|on!  
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~ tvuz I  
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 XIeLu"TSL  
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 n|SV)92o1  
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 #%0V`BS7n  
贴上你在cad中读出的数据就好了。半径的参数一样办理 )O]T}eI  
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