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. ` kG}NJf  
多试几次就可以了.

引用第23楼286974144于2007-10-19 15:17发表的  : RS>;$O_(M  
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. DFKumw>!  
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 ptrQ~m-  
The Backlight Utility was helpful to build the backlight system quickly. However, B|~tW21  
the bumps must be parameterized in order to get the desired output distribution. B4yC"55  
You can do this easily using the LightTools Properties dialog box. }CiB+  
1.In the System Navigator, expand the items LightGuide, CubePrimitive_1, /WlpRf%  
BottomSurface, and Zones. Then, select Texture, as shown in the following 'n9<z)/,!  
figure. V?a+u7*U&  
2.Right-click and select Properties on the shortcut menu. l.#iMi(@p~  
3.Select the Geometry tab. I?l%RdGW  
4.Select the arrow next to the Placement drop-down list, and select Bezier. Click G/2| *H  
Apply. 0<8pG:BQ  
ghtTools Introductory Tutorial

The default number of bumps is 100 (10 X 10). You need to change these (QPfrR=J4  
parameters to match your design. Note that LightTools allows many other ;^q@w  
placement options, but you will use the Bezier placement option for this f__r" N  
example. (~R[K,G  
5.On both the X Placement tab and Y Placement tab, change the Number of V'XmMn)!  
Bumps parameter to 300, as shown in the following figure. Click Apply after s<i& q {r  
each change. [7Yfv Xp  
6.Click OK to close the dialog box. k* ayzg3F>  
Note that the number of bumps is 300 X 300, which results in about 90,000 %6\e_y%  
bumps on the surface (~ 5143 bumps/in2). These bumps are arranged in a DriJn`vtzq  
manner defined by the Bezier parameterization option. Please see Chapter 5 of I.[2-~yf  
the LightTools Core Module User’s Guide for more information. With the T ~9)0A"]  
current parameter values, the Bezier option varies the bump spacing along the |mSFa8G@  
length of the light guide. The spacing in the orthogonal direction is constant. !$/1Q+  
The X and Y refer to the local coordinate system of the surface. g:l5,j.K  
LightTools Introductory Tutorial * 91 }=1#ANM1  
2;Ij~~  
HAPTER 5 Introduction to Backlight Design Svs!C+:le  
C @WV}VKm  
Examining Surface Properties HA?<j|M  
Using the methods described in previous chapters, you may want to check your kEH(\3,l  
model before you run a simulation. 3yWu-U \k  
Click on various parts of the model in the 3D Design View. Or use the System i?.7o*w8  
Navigator to select different surfaces and view their Properties. y;)j  
1.In the System Navigator, click to open BottomSurface of the LightGuide, then %SG**7  
click Zones, and then click Texture. uM!$`JN  
2.Select SphericalElement, and then right-click and select Properties from the Qi 3di  
shortcut menu. The Shape tab shows you a graphical representation of the }@kD&2  
spherical bump shape that is the bottom of the light guide. J}Q4.1WG$  
You might be curious as to why you cannot see the 3D texture property zones you OF$0]V  
defined. They are invisible by default, because drawing thousands of texture j.? '*?P  
elements can make displaying and exploring the model somewhat slow. If you :ET05MFs\#  
choose to make them visible, 3D textures are displayed in wireframe, even if the K,uTO7Mk[  
display mode is set to translucent. Wireframe rendering displays a bit faster and 3?x4+b  
shows more of the technical details. n"[VM=YGI  
92 * LightTools Introductory Tutorial 5XK}8\  
D(EY"s37  
HAPTER 5 Introduction to Backlight Design ]}KoW?M
 
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1.Rotate and zoom the model to that you can see something like the illustration i%1ny`Q  
below: v9<7=D&x  
. f L @rv  
2.To reveal the Property Zones: (7C&I-l  
a.Right-click in the Design View and select View Preferences to display this 'S_kD! BO  
dialog box. c6IFt4)g  
b.On the Visibility tab, click the Property Zone check box to turn it on. !ke_?+8sY  
c.Click OK. >C6wm^bl  
You will see the wire frame rendering of the spherical bumps on the >d.o1<  
bottom surface, and a solid color above it. The solid color is the 3D texture H+^93  
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 pdcP;.  
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 ./_o+~\e'  
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 :HSqa9>wa  
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 oY!nM%z/  
贴上你在cad中读出的数据就好了。半径的参数一样办理 Wa#!O$u  
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