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Fred Optical Engineering Software

computer program used for optical engineering

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionOct 11, 2021
Entity authorityQ5496032
Source-derived summary

Fred Optical Engineering Software (FRED) is a commercial 3D CAD computer program for optical engineering used to simulate the propagation of light through optical systems. Fred can handle both incoherent and coherent light using Gaussian beam propagation. The program offers a high level of visualization using a WYSIWYG (What You See Is What You Get) parametric interface. According to the publisher, Photon Engineering, the name "Fred" is not an acronym, and does not mean anything.

Fred allows for non-sequential raytracing with support to raytrace on up to 63 cores. Fred also features a downhill simplex optimizer where the user can specify variables, merit function and multiple targets for optimization. The program can import and export IGES, STEP, and OBJ CAD formats. Fred is also compatible with other hardware measured light source measurement software such as ProSource. Fred can also interact with MATLAB and Mathematica using an OLE Automation Client/Server interface.

Fred was used in the design of the NOAO's Large Synoptic Survey Telescope.

Editorial summary

This brief starts where responsible research should: with the source description of “Fred Optical Engineering Software” as computer program used for optical engineering. Everything that follows is an evidence route, not borrowed authority.

Editorial reviewA dependable orientation record for establishing vocabulary, names and a first evidence trail. The current 163-word lead offers orientation but no explicit four-digit date, so chronology should not be assumed. The selected authority fields contribute no independent date. The account is most persuasive where Fred, Optical and Engineering can be independently traced.
Editorial analysis

Why this record matters

The subject matters to the general reference register because the source frames it as computer program used for optical engineering. Its deeper value depends on whether names, dates, institutions and citations support that framing.

Evidence profile

The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Oct 11, 2021. The linked authority identifier is Q5496032. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank.

Critical limits

A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

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  2. Expand the search: follow Fred Optical Engineering Software primary sources, Fred Optical Engineering Software archive and Fred research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

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Source & attribution

This entry incorporates text from Fred Optical Engineering Software” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.