Applying Properties

FIGURE 4.15 - Source Type dropdown list

Prescription Standard Expert

The Prescription tab in the Define|Apply Properties dialog box lets you specify the sequence of lens surface intersections though which an image-forming ray travels. TracePro uses prescription (list of surfaces) for three things: (1) sorting ray paths, (2) automating the set-up of importance-sampling targets, and

(3) testing against the Optical Scatter Intercept Limit during the raytrace. The sequence must be entered this way because TracePro is a non-sequential raytrace program.

FIGURE 4.16 - Prescription Dialog

You can specify the sequence of intersections manually or automatically. This tab lets you define the prescription automatically by entering the starting position and

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Color

direction of the gut ray of the optical system. In an imaging system the gut ray passes through the center of the field of view and the aperture. It defines the optical axis. You can also edit the prescription by manually changing the prescription surface number. A prescription number of -1 applied to a surface means that the surface is not part of the optical prescription.

See “Automatic Setup of Importance Sampling” on page 4.27.

Color

TracePro defaults to green for the display of objects and surfaces in the model window and to black when a user selects an object or surface. To change the default display color, select View|Customize and change the color selection. To change the color of the object or surface, display the Define|Apply Properties dialog box, and select the Color tab. Choose a new color by selecting the Use custom color button and clicking in the color area to display the color selection palette. Select a color from the palette or by creating a color. Press the Apply button to change the color of the object and/or surfaces selected. The color is saved with the Model data.

When applying colors, the surface color takes precedence over the object color, and the object color takes precedence over the default color.

FIGURE 4.17 - Color Property Dialog

Object colors may also include transparency. Transparency is specified from 0.0 - 1.0 where 0.0 is opaque and 1.0 is invisible. The values are set for Red, Green and Blue components of the color. Setting Red to 1.0 and Green, Blue to 0.0

TracePro 5.0 User’s Manual

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