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:
Feb. 01, 1983
Filed:
Jul. 06, 1978
Wolfgang W Witte, Uberlingen, DE;
Bodenseewerk Perkin-Elmer & Co., GmbH, Uberlingen, DE;
Abstract
A double monochromator having a principal stage and a pre-monochromator or first stage that includes a coarse reflecting plane diffraction grating and a concave mirror for converging the object beam on the grating and for imaging the selected band of diffracted light from the grating on the entrance slit of the principal or second stage. The first stage spectral bandwidth is much larger than the second stage, thus permitting use of a grating having a groove spacing approximately ten times that of the second stage grating, and the use of linear wavelength adjusting means. The imaging mirror results in a shorter image and object distance and therefore a smaller convenient instrument.