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:
Jul. 31, 1984
Filed:
Nov. 30, 1981
Gerhard Krause, Rosenheim, DE;
Abstract
The present spectrometer features two modulators 11, 11' disposed one on either side of a dispersive member 19 which produces wavelength dependent deflections .alpha. of the various spectral components in the radiation. In other words the precise angle of deflection .alpha. is a function of wavelength. The dispersive element 19 is conveniently positioned between two lenses 26 which form a telecentric system with a magnification of one. The lens system is used to produce an image of the first modulator on the second modulator. Each of the modulators is preferably a grating with a linearly varying grating constant so that the modulators, which move in opposite directions f,f' at constant speed subject the incident radiation to a position dependent modulation. The radiation emerging from the second modulator 11' falls onto a photodetector 13. The arrangement is such that the output signal from the detector 13 contains a number of different frequencies each of which is characteristic of one of the particular spectral components. These frequencies, and thus the information on the individual spectral components can be readily separated using respective band pass filters 17.sub.I, 17.sub.II, 17.sub.III.