TracePro led

This is a general tutorial for users of TracePro LC,TracePro and TracePro Expert.

Create an LED package based on manufacturer’s data sheet.

This example will build a source model for a Siemens LWT676surface mount LED based on the Manufacturer’s data sheet.这个例子将建立一个来源模型为根据制造商的数据表LED的西门子LWT676表面登上。The dimensions will be used to build a solid model and the source output will be defined to match the LED photometric curve.维度将用于建立一个固体模型，并且来源产品将被定义匹配LED测光曲线。

TracePro Release3.02

TracePro User Interface

The figure shows a solid block in TracePro.The following user interface items will be used in this example

图在TracePro显示一个坚实块。以下用户界面项目用于这个例子

Define

Insert Analysis

Zoom

Select Surface Distribution

Model Window

System Tree

3TracePro Release3.0Create a Thin Sheet

First analyze the package to determine the best method of constructing the geometry in TracePro.首先分析包裹确定修建几何最佳的方法在TracePro。The symmetry of the package suggests starting from a Thin Sheet and extrude the top and bottom halves with a small draft angle.包裹的对称从稀薄的板料开始建议并且挤压上面和底部一半以一小拔模斜度。Construct Thin Sheet in the XY plane.修建稀薄的板

料在X - Y的飞机。

1.Start TracePro and open a new model with

File|New.开始TracePro并且打开一个新的模型与文件|新。

2.Select View|Profiles|XY or click the View XY button on the toolbar选择看法|外形|X - Y或点击看法X - Y的按钮在工具栏

3.Open the Insert|Primative Solid dialog and select the Thin Sheet tab.打开插入物|原始坚实对话和选择稀薄的板料表格。

4.Enter the four corners of the Thin Sheet in mm in the dialog box and click the Insert Button.

在毫米输入稀薄的板料的四个角落在对话箱并且点击插入物按钮。

5.Press the Zoom All button or select the View|Zoom|All menu to see the new object

按徒升所有按钮或选择看法|徒升|看新的对象的所有菜单

TracePro Release3.04Selecting a Surface

TracePro uses surface and object selections for many operations.TracePro为许多操作使用表面和对象选择。

1.Close the Insert Primitive Solid dialog box.The thin sheet object has only one surface关闭插入物原始坚实对话箱。稀薄的板料对

象只有一表面

2.Select View|Profiles|YZ or click the View YZ button on the toolbar to view the profile of the Thin Sheet.选择看法|外形|YZ或在工具栏

点击图YZ按钮观看稀薄的板料的外形。

3.Select the surface using the Edit|Select|Surface menu(or Select Surface tool),use the mouse to“pick”the rod end.使用编辑选择

表面|选择|浮出水面菜单(或精选的表面工具)，使用老鼠“采摘”杆端。You may want to use the system tree by opening the system tree with Window|Split and selecting the surface.您可以想要通过打开系统树使用系统树与窗口|和选择表面。

5TracePro Release3.0Use Sweep to form a solid

The package has a small angle of about4degrees so you will extrude the sheet using Edit|Surface|Sweep.包裹有小角度大约4

度，因此您将挤压板料使用编辑|表面|打扫

1.Select Edit|Surface|Sweep. 精选编辑|表面|打扫。

2.Enter a sweep distance of0.9mm and a draft angle of4degrees.输入打扫距离0.9毫米和4度拔模斜度。

3.Click Apply.The surface will be swept along the plane's surface normal,in this case along the Z axis.点击申请。表面沿飞

机的表面法线将被清扫，在这种情况下沿Z轴。

4.Make sure Surface4is selected for the next sweep to complete the object.确定表面4为下打扫被选择完成对象。

TracePro Release3.06

Complete the Solid

Perform two more sweep operations to complete the solid according to the data sheet.更进行二打扫操作根据数据表完成固体。

1.Select Surface4.选择表面4

2.Sweep by0.2with draft=0to create the central portion of the package.打扫由0.2与创造包裹的部分的draft=0。

3.Select Surface8.

4.Sweep again by0.9with a–4degree draft to complete the construction.由0.9再清扫与a -完成建筑的4度草稿。

Create a conical hole

Next you can add the cone reflector which holds the LED die.其次您能增加拿着LED模子的锥体反射器。To create the conical hole, first create a cone,then perform a Boolean Subtract operation.要创造圆锥形孔，首先创造锥体，然后执行布尔减去操作。

1.Select Insert|Primitive Solid and select the Cylinder/Cone tab.选择插入物|原始坚实和选择圆筒或锥体表格。

2.Select the Cone option and enter the values shown,then click Insert to create the cone.选择锥体选择并且进入显示的价值，然后点

击插入物创造锥体

Subtract the Cone from the Package

Boolean Operations use a concept of Body and Tools.The Body is the item you wish to keep and the tools are items which will have some effect on the Body.Here you want to remove the volume occupied by the cone from the package.The Body is the package and the Tool is the cone.布尔运算使用身体和工具的概念。身体是您希望保留的项目，并且工具是在身体将有一些作用的项目。您想要从包裹取消锥体占领的容量。身体是包裹，并且工具是锥体。

1.Select the Package object from the System Tree.Click on Object1.选择包裹对象从系统树。点击对象1。

2.Select the Tool object from the System Tree.Use Ctrl+Click on Object2.The Ctrl key allows you to add the object to the

current selection.选择工具对象从系统树。使用Ctrl+Click在对象2。 Ctrl钥匙允许您增加对象到当前选择。

3.Select Edit|Boolean|Subtract.精选编辑|布尔|减去。

4.Object2will be removed from the System Tree. 对象2从系统树将被取消。

Add diffuser

You also need to add a diffuser.This will be a thin cylinder joined to the package.You will make the inner surface of the diffuser scattering and the inside of the cone a perfect mirror.您也需要增加分散器。这将是一个稀薄的圆筒被加入对包裹。您将做内在表面分散器驱散和里面锥体一个完善的镜子。

1.Select Insert|Primitive Solid,Cylinder/Cone tab. 选择插入物|原始固体、圆筒或者锥体表格。

2.Enter the values shown. 进入显示的价值。

3.Click Insert to create the cylinder. 创造圆筒的点击插入物。

Add LED

Now you will add the LED chip itself.The dimensions are not given,but you can estimate that it is0.4x0.4x0.15mm from the data sheet.

现在您将增加LED芯片。没有测量维度，但是您能估计它0.4 x 0.4 x 0.15毫米从数据表。

1.From the Insert|Primitive Solid dialog box,select the Block tab从插入物|原始坚实对话箱，选择块制表符

2.Enter the values shown. 进入显示的价值。

3.The center of the LED has a Z-value1.175to position the block so that it is on the bottom of the conical hole. LED的中心有一个Z准数

1.175安置块，以便它在圆锥形孔的底部。

4.Click Insert to create the block. 创造块的点击插入物。

5.You can also name the Objects by clicking in the names in the System Tree and entering a new identifier. 您能通过点击在名字在系统

树和进入一个新的标识符也命名对象。

Diffusing Surface Property

You will make three assumptions about the optical properties of this LED package.First，that the Diffuser is a perfect Lambertian transmitter with no losses.Second,the inside of the conical hole

is a perfect reflector without any losses.Third,the LED is a perfect reflective diffuser. These simplifications could be removed with more data from the manufacturer.您将做三个假定关于这个LED包裹光学性能。首先，那分散器是一台完善的Lambertian发射机没有损失。其次，圆锥形孔的里面是一台完善的反射器没有任何损失。第三， LED是一台完善的反射性分散器。这些简单化能取消以更多数据从制造商。

1.TracePro includes a Perfect Mirror Surface Property so you only need to add the diffuser property.TracePro包括完善的镜子表面物产，因此您仅需要增加分散器物产。

2.Select Define|Edit Property Data|Surface Properties. 精选定义|编辑物产数据|浮出水面物产

3. Click the Add Property button,enter the property name Lambertian Diffuser and select ABg for the Scatter Model.点击增加物产按钮，进入资产名称Lambertian分散器并且为消散模型选择ABg。

4.Set the absorptance value to0.0(a lossless surface)and select Solve for BTDF (Bidirectional Transmission Distribution Function)from the drop-down list.The BTDF is the scattering portion of the surface property with three coefficients.(See the manual for information about the ABg scattering model).设置吸收比价值对0.0 (lossless表面)，并且精选为BTDF (双向传输分布函数)解决从下拉列表。 BTDF是表面物产的驱散部分以三个系数(参见指南对于关于驱散模型)的ABg的信息

Apply Diffuser surface property

Make the inside surface of the Diffuse the scattering surface.做叉瓦的基面

散开驱散表面。

1.Select Define|Apply Properties to open the Apply Properties

Dialog box and select the Surface tab 精选定义|应用物产打开申请性能对话框和选择表面制表符

2.Select the inner surface of the diffuser,by either:由选择分散器的内在

表面，：

•clicking on it in the System Tree点击对此在系统树

•Selecting Edit|Select|Surface and clicking on the surface in the

model window.选择编辑|精选|表面和点击在表面在式样窗口。

3.You may want to zoom in on the diffuser to see which surface is which

(as shown).您在分散器可以想要ON放大看哪表面是哪些(如所示)。

4.Select Lambertian Diffuser from the Surface Property Name drop-

down list. 选择Lambertian分散器从表面资产名称下拉列表。

5.Click Apply to apply the property to the diffuser.点击申请适用于物产

分散器。

Apply Mirror surface property

The next step is to apply a Mirror Surface to the base and sides of the

conical hole in the package.

下一个步骤将应用镜子圆锥形孔的表面于基地和边在包裹。

1.Select the conical surface and the bottom of the conical hole.

After selecting one surface,you can add to the selection by

holding down the Ctrl key and selecting additional surfaces.

选择圆锥形表面和圆锥形孔的底部。在选择一表面以后，您能补充说

到选择通过持续Ctrl钥匙和选择另外的表面。

2.Select Perfect Mirror from the Surface Property Name drop-

down list.

选择完善的镜子从表面资产名称下拉列表。

3.Click Apply to apply the property to the selected surfaces.

点击申请应用物产于选择的表面。

Define LED source

1.Select Analysis|Raytrace Options to open the Raytrace Options

dialog box.选择分析|打开Raytrace选择对话箱的Raytrace选择。

2.On the Options tab,select Photometric for the Radiometric Units type.在选择为幅

射测量的单位类型选中，选择测光。

3.Click Apply and close the dialog box.点击应用并且关闭对话箱。

4.Select the top surface of the LED.选择LED的顶面。

5.In the Apply Properties dialog box,select the Surface Source tab. 在申请性能对

话框，选择表面来源表格。

6.Enter the values and selections shown. 6. 进入显示的价值和选择。

7.Click Apply to create an LED that emits0.05lumens in a Lambertian pattern7.

点击申请创造在Lambertian样式散发0.05流明的LED

.

Top of LEDPerform the Raytrace

Now the model is ready for raytracing.现在模型准备好raytracing。

1.Begin a Surface Source Raytrace by either:由开始一个表面来源Raytrace ：

•clicking the Source Trace button•点击来源踪影按钮

•selecting Analysis|Source Raytrace and clicking Trace Rays. •选择分析|来

源Raytrace和点击的踪影光芒。

Begin the ray-trace by one of the above options.First TracePro will perform an Audit of the model and report any invalid properties or geometry,then the raytrace will start.

开始由其中一个上述选择光芒追踪。第一TracePro将执行模型的审计并且报告所有无效物产或几何，然后raytrace将开始。

Display Candela plot

1.Select Analysis|Candela Options.

选择分析|坎德拉选择。

2.Select the Orientation and Rays tabs.

选择取向并且发出光线制表符。

3.Set the Normal and Up vectors as shown in the top illustration.

如顶面例证所显示，设置法线并且上升传染媒介。

4.Select the Candela Distributions tab and enter the settings shown in the bottom illustration.

选择坎德拉发行选中并且进入在底下例证显示的设置。

5.Click Apply to see the changes on the plot.

点击在剧情申请看变动。

Display Candela plot

The candela plot from TracePro can be compared to the photometric curve from the data sheet. 坎德拉剧情从TracePro 可以与测光曲线比较从数据表。

1. Select Analysis|Candela Plots|Polar Candela Distribution or press the Polar Candela Distribution button.

选择分析|坎德拉剧情|极性坎德拉发行或按极性坎德拉发行按钮。

2. Compare to the data.与数据比较。