Geometrical Construction
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.

Copyright © 2008 Photon Engineering LLC. All Rights Reserved.
Large
Synoptic Survey Telescope as imported from Solidworks and modeled into FRED,
courtesy of NOAO