Calendar
Introduction to CODE V
March 15-19, 2010
Pasadena, California
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Introduction to CODE V
March 15-16, 2010
Florence, Italy
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Advanced Topics in CODE V
March 17-19, 2010
Florence, Italy
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Advanced Topics in CODE V
March 22-26, 2010
Pasadena, California
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For a complete list of CODE V events worldwide, visit our Web site:
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Quick Tip: New CODE V Glass Expert Macro Available for Download
Founded in 1963, the ORA Engineering team has hundreds of years of combined experience in optical design. In fact, many of CODE V's industry leading capabilities have been developed to meet the needs of the ORA Engineers in developing state-of-the-art optical systems, as well as the needs of our external users.
The ORA Engineering team has used their optical design expertise to develop a new macro, GlassExpert.seq, that simulates the process an experienced optical engineer would use in selecting glasses "by hand" while optimizing their design. This new macro can greatly reduce this phase of the design process from days to hours.
The example below uses an IR imaging system as a starting point that has been locally optimized for the MWIR band. The MTF curves that follow show the lens performance before and after GlassExpert was run on this model.
The GlassExpert macro, and user-documentation, is now available for download from ORA's Customer Support Web site, www.oraservice.com under CODE V Support > Macro and User-defined Feature Downloads.
Updates to the Customer Support Web Site
The following updates have been made to ORA's Customer Support Web Site, www.oraservice.com, under CODE V Support:
- The GlassExpert macro described above, including user documentation, is available under Macro and User-defined Feature Downloads.
- User-defined surface forms the Forbes Polynomial Aspheres are available for download under Macros and User-defined Feature Downloads. The chief advantage of these forms over classic polynomial aspheres are:
- The magnitude of the aspheric term is physically meaningful, related to either sag departure or slope departure from a best fit conic or sphere. This allows the terms to be viewed in a physically significant way. It also allows insight for dropping insignificant terms.
- The aspheric terms are orthogonal over a normalized radius, allowing for meaningful direct tolerancing of each aspheric term.
- The Forbes aspheric terms provide a very stable description of the surface, where the shape is relatively insensitive to small changes in the coefficients. In contrast, the shape of a power series asphere (ASP surface type) is a very sensitive function of the coefficient values. The ASP coefficients therefore require many digits of precision to accurately represent the surface, and this representation is much more susceptible to computational noise.
The download includes both best-fit sphere and base conic forms of the Forbes aspheres as well as user documentation on installing and using these forms in CODE V.
- The January issue of CODE V Enews, which featured an overview of enhancements included in CODE V 10.2, is available under CODE V Enews & Tips.
- An updated copy of newglassprv.seq, a macro containing private catalog glass definitions for materials not yet in the CODE V glass catalog, is available under Macro and User-defined Feature Downloads > CODE V Macros from Tech Support. This macro has been updated to include Sellmeier coefficients for Schott IR materials IG2, IG3, IG4, IG5, and IG6.
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