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. w8O" =},  
多试几次就可以了.

引用第23楼286974144于2007-10-19 15:17发表的  : UtnZNdlv  
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. ,7W:fwdR  
多试几次就可以了.

<$%X<sDkq  
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 .Da'pOe  
The Backlight Utility was helpful to build the backlight system quickly. However, 7Y
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the bumps must be parameterized in order to get the desired output distribution. .~>?*}  
You can do this easily using the LightTools Properties dialog box. +x=)/;:  
1.In the System Navigator, expand the items LightGuide, CubePrimitive_1, qnM|w~G  
BottomSurface, and Zones. Then, select Texture, as shown in the following ljC(L/I  
figure. :Zt2'vcGpf  
2.Right-click and select Properties on the shortcut menu. !z 53OT!  
3.Select the Geometry tab. Tlq-m2]  
4.Select the arrow next to the Placement drop-down list, and select Bezier. Click 1TS0X:TCn  
Apply. MP^ d}FL  
ghtTools Introductory Tutorial

The default number of bumps is 100 (10 X 10). You need to change these ,CvG 20>  
parameters to match your design. Note that LightTools allows many other gU&%J4O  
placement options, but you will use the Bezier placement option for this Pq9|WV#F5/  
example. m8R9{LC  
5.On both the X Placement tab and Y Placement tab, change the Number of ritBU:6  
Bumps parameter to 300, as shown in the following figure. Click Apply after  YZc>dE  
each change. t?c}L7ht  
6.Click OK to close the dialog box. ;G |i^  
Note that the number of bumps is 300 X 300, which results in about 90,000 ;5_{MCPM  
bumps on the surface (~ 5143 bumps/in2). These bumps are arranged in a '1?\/,em  
manner defined by the Bezier parameterization option. Please see Chapter 5 of <TGn=>u  
the LightTools Core Module User’s Guide for more information. With the uo\ .7[1  
current parameter values, the Bezier option varies the bump spacing along the n">u mM;Eh  
length of the light guide. The spacing in the orthogonal direction is constant. 1Xu?(2;NF  
The X and Y refer to the local coordinate system of the surface. q h/F  
LightTools Introductory Tutorial * 91 +Hvc_Av''  
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HAPTER 5 Introduction to Backlight Design ,`D~py,  
C fKH7xu!V4+  
Examining Surface Properties %`MQmXgM  
Using the methods described in previous chapters, you may want to check your &;yH@@Z  
model before you run a simulation. 1CU>L[W)  
Click on various parts of the model in the 3D Design View. Or use the System {n#k,b&9B  
Navigator to select different surfaces and view their Properties. ^I8Esl8  
1.In the System Navigator, click to open BottomSurface of the LightGuide, then fyTAou6hI  
click Zones, and then click Texture. {8$=[;  
2.Select SphericalElement, and then right-click and select Properties from the x8Loyt_C  
shortcut menu. The Shape tab shows you a graphical representation of the (*}yjUYLZ  
spherical bump shape that is the bottom of the light guide. c'uhK8|  
You might be curious as to why you cannot see the 3D texture property zones you C%d_@*82  
defined. They are invisible by default, because drawing thousands of texture &LO"g0w  
elements can make displaying and exploring the model somewhat slow. If you k.<]4iS  
choose to make them visible, 3D textures are displayed in wireframe, even if the }%b;vzkG5  
display mode is set to translucent. Wireframe rendering displays a bit faster and o[oM8o<  
shows more of the technical details. L`f^y;Y.  
92 * LightTools Introductory Tutorial 1"Z@Q`}  
+#U|skl  
HAPTER 5 Introduction to Backlight Design !+>v[(OzM  
C =4V&*go*\  
1.Rotate and zoom the model to that you can see something like the illustration ^;!0j9"*:  
below: ,B?~-2cCz  
. glDcUCF3  
2.To reveal the Property Zones: lC:k7<0Ji  
a.Right-click in the Design View and select View Preferences to display this ^b:(jI*l  
dialog box. vEf4HZ&w  
b.On the Visibility tab, click the Property Zone check box to turn it on. +$4(zPs@  
c.Click OK. 'z76Sa  
You will see the wire frame rendering of the spherical bumps on the !It`+0S b  
bottom surface, and a solid color above it. The solid color is the 3D texture B9p?8.[  
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 [+O"
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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 WJI[9@^I~  
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 u2 `b'R9  
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 j*~T1i
 
贴上你在cad中读出的数据就好了。半径的参数一样办理 <uj8lctmP  
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