Analysis

Flux vs Optical Path Length Data for

E:\TraceProData\testdata\Flux_v_OPL\Flux_vs_OPL.OML

Data for Absorbed rays from Sphere 1 Surface 0

Data generated at 14:30:53 January 06, 2009

Normalization:Raw

Smooth:Off

Smooth Factor:10

Log Scale:Off

Length Units:Millimeters

Time Units:Seconds

Max Length:40

Min Length:10

Length Increment:1

Max Time:1.33426e-010

Min Time:3.33564e-011

Time Increment:3.33564e-012

Number of Increments:30

OPL Flux

10.50

11.50

12.50

13.50

14.50

15.50

16.50

17.50

18.50

19.50

20.50.143911

21.50.166052

22.50.129151

23.50.121771

24.50.0811808

25.50.0922509

26.50.0590406

27.50.0627306

28.50.0516605

29.50.0295203

Incident Ray Table

The Incident Ray Table shows data for rays incident on the selected surface. The table can be scrolled, printed, copied to the Windows clipboard for pasting into another application, or saved to a file. The saved file can also be formatted as a Source File.

An incident ray table can be viewed for any surface in the model. To view an incident ray table:

•choose the Edit|Select Surface menu item or press the Select Surface toolbar button,

•select the surface for which you want to see the incident ray table,

•choose Analysis|Incident Ray Table.

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Analysis Menu

A new window, Figure 6.28, opens with a table rays incident on the surface. To view the incident ray table for another surface, select that surface with the mouse and the ray table will automatically update to show the rays at that surface.

FIGURE 6.28 - Incident Ray Table.

The incident ray table displays the columns shown in Table 6.3.

At each ray intersection a Intercept Type is stored in the ray node. The ray types are listed in Table 6.1.

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Analysis

TABLE 6.1. Ray Intercept Types.

Label	Description
SpecTran	Specular Transmission
SpecRef	Specular Reflection
RandTran	Random Transmission (e.g. Scatter,
	Diffraction, etc.)
RandRefl	Random Reflection (e.g. Scatter, Dif-
	fraction, etc.)
ImpTran	Importance Transmission (from Impor-
	tance Sampling)
ImpRefl	Importance Reflection (from Impor-
	tance Sampling)
RanDiffTran	Diffraction in Transmission
RanDiffRefl	Diffraction in Reflection
ImpDiffTran	Diffraction in Transmission (from Impor-
	tance Sampling)
ImpDiffRefl	Diffraction in Reflection (from Importance
	Sampling)
RanVolume	Node in bulk scattering object.
ImpVolume	Node in bulk scattering object (from Impor-
	tance Sampling)
GrinTran	Node inside a Grin Object
RepTileTran	Node inside a RepTile surface

Additional information is stored for certain conditions and displayed under the History column. These are shown in Table 6.2.

TABLE 6.2. Ray History Types.

Label	Description
OpticalScat	Optical Scatter threshold reached
RandomScat	Random Scatter threshold reached
TotalIcepts	Total Intercept threshold reached
TotalScat	Total Scatter threshold reached
Emitted	Starting node at emitted surface
Edge Hit	Ray failed at an edge
Coinc Surf	Ray failed between two coincident surfaces
TIR	Ray reflected due to TIR
Missed	Ray missed all surface
Volume Scat	Ray in a bulk scattering object
RepTile	Ray in a RepTile surface

Each sheet in the Incident Ray Table displays the columns listed in Table 6.3 with additional columns for polarization data if polarization raytrace in enabled.

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			Analysis Menu
	TABLE 6.3. Incident Ray Table Columns
			Polarization
	Label	Description	Ray Trace
	Ray Number	The row in the table
	Wavelength	The wavelength for the current ray
	Source	The name of the source from which this ray started
	Start Ray	For example, Start Ray 3 is the third ray started in the ray-
		trace.
	Ray Node	The ray starts with ray node 1 (at the source or grid) and the
		first ray-surface intersection is node 2, etc.
	Type	The type of the previous ray node, for example, SpecRefl for
		specular reflection.
	History	Often blank. Any special type of the previous node, for exam-
		ple, TIR for total internal reflection—a totally internally
		reflected ray on the previous node is Type=SpecRefl and His-
		tory=TIR.
	Flux	Flux of the incident ray.
	X Pos., Y Pos.,	X, Y, and Z coordinates where the ray struck the surface.
	Z Pos.
	X Vec., Y Vec.,	X, Y, and Z direction cosines of the ray leaving the surface.
	Z Vec.
	S0, S1, S2, S3	Components of the Stokes vector in the local coordinate sys-	enabled
		tem of the ray.
	Deg Pol	Degree of polarization of the ray.	enabled
	Ellipse Ratio	Ratio between the two axes of the polarization ellipse.	enabled
	Xvec MajAxis,	X, Y, and Z components of a vector pointing in the direction of	enabled
	Yvec MajAxis,	the major axis of the polarization ellipse.
	Zvec MajAxis

Copying and Pasting the Incident Ray Table Data

The incident ray table data can be exported from TracePro to another software package such as a spreadsheet or word processor. Do this by making the incident ray table window the active window and selecting Edit|Copy in TracePro (or Ctrl- C). Go to the other software program, such as Microsoft Excel, and select Edit|Paste (or Ctrl-V). The tabular data is transferred to the other program via the Windows clipboard.

Saving the Incident Ray Table in a File

You can also save the incident ray table in a text file. Then you can import the table into a spreadsheet program, for example, or perform post-processing operations using your own or other analysis software. To do this, first be sure the incident ray table is activated (as indicated by a colored top bar on the Incident Ray Table window), then select File|Save As. The default extension for the file is txt. Type the file name you wish to use and press OK. TracePro saves a tabdelimited file containing the incident ray table.

When you save the incident ray table to a file, additional data columns are saved to the file as shown in Table 6.4. The wavelengths are displayed as head lines.

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