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Proceedings Article

Selection of glasses for achromatic doublets with reduced secondary color

[+] Author Affiliations
Juan L. Rayces

J.L. Rayces Consulting, Inc. (USA)

Martha Rosete-Aguilar

Univ. Nacional Autonoma de Mexico (Mexico)

Proc. SPIE 4093, Current Developments in Lens Design and Optical Systems Engineering, 36 (October 24, 2000); doi:10.1117/12.405220
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From Conference Volume 4093

  • Current Developments in Lens Design and Optical Systems Engineering
  • Robert E. Fischer; R. Barry Johnson; Warren J. Smith; William H. Swantner
  • San Diego, CA | July 30, 2000

abstract

Graphical methods have been used in Engineering and Physics to speed up long numerical calculations often done by hand. Many of these methods have become obsolete with the increasing speed of digital computers. Charts for the selection of glasses for thin achromatic doublets with reduced secondary spectrum are among the graphs still in use probably because of the sizable number of possible combinations. With any of the most popular, present day, PC's all the possible combinations of all the glasses in the Schott Glass Catalog, taken a pair of glasses at a time secondary spectrum can be computed, sorted in increasing value and displayed on the monitor screen as a table in about 30 seconds. The number of acceptable solutions on the bases of magnitude of secondary spectrum only may still be huge. Further calculations of aberrations for specific cases will help reduce drastically the number of acceptable solutions. Beyond that, it will be left to the user to consider other parameters generally listed in glass catalogs data sheets to finally come out with one solution.

© (2000) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Juan L. Rayces and Martha Rosete-Aguilar
"Selection of glasses for achromatic doublets with reduced secondary color", Proc. SPIE 4093, Current Developments in Lens Design and Optical Systems Engineering, 36 (October 24, 2000); doi:10.1117/12.405220; http://dx.doi.org/10.1117/12.405220


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