Rays Between Backlighter and Detector: Orthographic Projection

For Orthographic Projection, the rays eminating between each of the pixels in the detector grid and the backlighter are parallel. The intensity originating from the backlighter is assumed to be spatially uniform. A schematic illustration of the Orthographic Projection viewing model for a rectangular detector is shown below for a 2D cross section. The points in the plasma represent intersections of the rays with walls of the plasma volume elements.

When specifying Orthographic Projection, the center of the detector points to the Center of Projection. The position of the backlighter is located at the position defined by the Center of Projection, and the backlighter has an extended size that is equal to the size of the detector.

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