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. 5&L*'k
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多试几次就可以了.

引用第23楼286974144于2007-10-19 15:17发表的  : &+oJPpHi\  
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. >}]bKq  
多试几次就可以了.

Zg4wd/y?  
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+hj<K  
The Backlight Utility was helpful to build the backlight system quickly. However, ]:?hU^H]<  
the bumps must be parameterized in order to get the desired output distribution. Sw[*1C8  
You can do this easily using the LightTools Properties dialog box. YxU->Wi]G  
1.In the System Navigator, expand the items LightGuide, CubePrimitive_1, Dp^=%F{t  
BottomSurface, and Zones. Then, select Texture, as shown in the following Y1qbu~!  
figure. O0pXHXSAL  
2.Right-click and select Properties on the shortcut menu. Z%3)w.  
3.Select the Geometry tab. ,~l4-x.,  
4.Select the arrow next to the Placement drop-down list, and select Bezier. Click bsI?=lO  
Apply. -I#<?=0B  
ghtTools Introductory Tutorial

The default number of bumps is 100 (10 X 10). You need to change these >7W8_6sC<  
parameters to match your design. Note that LightTools allows many other }1sd<<\`  
placement options, but you will use the Bezier placement option for this f=4q]y#& X  
example. >DzW OB  
5.On both the X Placement tab and Y Placement tab, change the Number of 6-{wo)p  
Bumps parameter to 300, as shown in the following figure. Click Apply after "QtkNy%E  
each change. AX )dZdd  
6.Click OK to close the dialog box. =`V9{$i  
Note that the number of bumps is 300 X 300, which results in about 90,000 r6 pz(rCs}  
bumps on the surface (~ 5143 bumps/in2). These bumps are arranged in a x:]_z.5  
manner defined by the Bezier parameterization option. Please see Chapter 5 of 5'(#Sf
 
the LightTools Core Module User’s Guide for more information. With the T^Xum2Ec  
current parameter values, the Bezier option varies the bump spacing along the JVPLE*T  
length of the light guide. The spacing in the orthogonal direction is constant. GN|xd+O_  
The X and Y refer to the local coordinate system of the surface. !
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LightTools Introductory Tutorial * 91 T(+*y  
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HAPTER 5 Introduction to Backlight Design w~e$ul(IQM  
C 5 ^tetDz}  
Examining Surface Properties ^p\n/#B  
Using the methods described in previous chapters, you may want to check your pr1>:0dg  
model before you run a simulation. %b ^.Gw\L  
Click on various parts of the model in the 3D Design View. Or use the System hBW,J$B  
Navigator to select different surfaces and view their Properties. M_;hfpJZ  
1.In the System Navigator, click to open BottomSurface of the LightGuide, then nh"LdHqiDB  
click Zones, and then click Texture. @Y&(1Wl  
2.Select SphericalElement, and then right-click and select Properties from the 9NC'iFQ#  
shortcut menu. The Shape tab shows you a graphical representation of the Qu|<1CrZj]  
spherical bump shape that is the bottom of the light guide. c 9zMI  
You might be curious as to why you cannot see the 3D texture property zones you 1tCe#*|95  
defined. They are invisible by default, because drawing thousands of texture U {sT %G  
elements can make displaying and exploring the model somewhat slow. If you x.U:v20`  
choose to make them visible, 3D textures are displayed in wireframe, even if the MrS~u  
display mode is set to translucent. Wireframe rendering displays a bit faster and 6 &MATMR  
shows more of the technical details. <\\,L@  
92 * LightTools Introductory Tutorial .+`Z:{:BC&  
B%Z,Xjq  
HAPTER 5 Introduction to Backlight Design I h 19&D  
C  'v&f  
1.Rotate and zoom the model to that you can see something like the illustration XSo$;q\  
below: Eg]tDPN1  
. /p[lOg  
2.To reveal the Property Zones: *W1:AGpz  
a.Right-click in the Design View and select View Preferences to display this Hl*/s  
dialog box. PZCOJK
 
b.On the Visibility tab, click the Property Zone check box to turn it on. !}&f2!?.W  
c.Click OK. um mkAeWb  
You will see the wire frame rendering of the spherical bumps on the ! d" i  
bottom surface, and a solid color above it. The solid color is the 3D texture ,Je9]XT  
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 RS1c+]rr  
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 '/H+  
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 I'T@}{h  
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 `F TA{ba  
贴上你在cad中读出的数据就好了。半径的参数一样办理 YA4;gH+  
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