US Patent 7518725 Temperature controlled lens

Patent 7518725 was granted and assigned to J.A. Woollam Co., Inc. on April, 2009 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

J.A. Woollam Co., Inc.

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7518725

Patent Inventor Names

Martin M. Liphardt0

Date of Patent

April 14, 2009

Patent Application Number

11585301

Date Filed

October 23, 2006

Patent Primary Examiner

‌

L. G. Lauchman

Patent abstract

Quasi-achromatic multi-element lens(es), the elements of which are mounted with respect to one another in a temperature controlled mounting system, and the application thereof in focusing, (and/or colliminating), a spectroscopic electromagnetic beam into a very small, chromatically relatively undispersed, area spot on a material system, and application thereof in ellipsometer, polarimeter and the like systems.