Calculations/Analyses
FRED supports the following calculations/analyses:
Text-Based Analyses:| • | Find best focus (best focus position and direction of a set of rays) | |
| • | Ray status (status summary of all rays) | |
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Ray-Surface summary (surface-by-surface summary of ray count and total power) |
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Ray statistics (surface-by-surface ray data statistics) |
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| • | Incident/absorbed power (surface-by-surface ray hit count, incident power, and absorbed power) | |
| • | Paraxial calculations along a specified sequential path (top-level system information [focal length, principal planes, pupils, etc.], paraxial raytrace, third order aberrations) | |
| • | Ray paths (specific ray trajectories) | |
| • | Fiber coupling (step-index or gradient index fibers including option to include Fresnel reflection losses) | |
| • | Automatic importance sampling determination (computes the solid angle of the designated detector surface relative to specific surfaces; useful for stray light analysis) | |
| • | Stray light report (lists of specular and/or scatter stray light paths user various criteria) | |
| • | Listing of entities in global coordinates | |
| • | Individual ray data |
Graphically-Based Analyses:
| • | Positional spot diagram | |
| • | Directional spot diagram | |
| • | Polarization spot diagram | |
| • | Gaussian beam size diagram (size of coherent Gaussian beamlets) | |
| • | Irradiance distribution (positional coherent or geometric spread function – power/unit area) Intensity distribution (directional coherent or geometric spread function – power/unit solid angle) | |
| • | Coherent scalar wave field (amplitude, phase, real and imaginary components, etc.) | |
| • | Energy density (power/unit volume) | |
| • | True color image (visual appearance of irradiance distribution) | |
| • | 3D spot diagram (Ray spots drawn in the 3D rendering window) | |
| • | BSDF scatter function (2D and 3D plots of scatter functions) | |
| • | Coating characteristics (Reflection/Transmission plots as a function of angle, wavelength, and/or polarization) |
The irradiance, intensity, energy density, scalar wave analyses, and true color image include interactive profile slicing.