The user can construct a FRED model from data coming from a variety of sources:
• The most common way of entering FRED geometry is directly through FRED's easy to use Graphical User Interface (GUI).
• Optical system prescription in CODE V, OSLO, or ZEMAX formats
• Optical/mechanical prescription in ASAP text output format
• Mechanical structures from any CAD program capable of outputting an IGES or STEP file
• Lenses, mirrors and prisms imported from vendor catalogs (Edmund Industrial Optics, JML Optical, Melles Griot, Newport Corporation, OptoSigma Corporation, Rolyn Optics, Esco, and Oriel)
• FRED primitives including lenses, mirrors, and prisms
• User-defined custom elements (user creates structure from FRED's predefined surfaces and curves and/or scripted surfaces)
• Drawings digitized using FRED's digitization tool
Oftentimes, models are constructed from several sources: the optical prescription typically comes from a lens design program and it is merged with a model of the mechanical structures exported from a CAD program.
The user can organize the geometry into “real world” assemblies and subassemblies at any time.
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