The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 26, 1996
Filed:
Feb. 21, 1995
Alexander Kremer, Stamford, CT (US);
Oriel Corporation, Stratford, CT (US);
Abstract
An apparatus for providing an astigmatically-reduced image with a spectroscopic instrument is disclosed which comprises a collimator which collimates electromagnetic radiation; a cylindrical mirror which receives and reflects the collimated electromagnetic radiation; a diffractor having a surface with a plurality of diffraction rulings inscribed thereon for diffracting electromagnetic radiation directed from the collimator; and a focuser which collects, focuses and directs diffracted electromagnetic radiation and directs it towards an exit aperture. In the preferred embodiment, the cylindrical mirror comprises a concave cylindrical mirror positioned such that the cylindrical axis is substantially normal to rulings on the diffractor. In another preferred embodiment, the cylindrical mirror is convex and is positioned such that the cylindrical axis is substantially parallel to rulings on the diffractor.