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:
Apr. 23, 1996
Filed:
Nov. 30, 1994
Applicant:
Inventors:
David N Batchelder, London, GB;
G David Pitt, Gloucestershire, GB;
Assignee:
Renishaw plc, Gloucestershire, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01F / ;
U.S. Cl.
CPC ...
356301 ; 356326 ;
Abstract
A spot of a sample is illuminated by laser light. Raman scattered light is collimated in a parallel beam by a microscope objective, and analyzed by a dispersive or non-dispersive analyzer (such as a diffraction grating or filter). A lens then focuses the Raman scattered light onto a two-dimensional photodetector array in the form of a charge-coupled device (CCD). A confocal technique is described to eliminate light scattered from outside the focal plane of the objective. This may be done by binning together a few pixels of the CCD at the focal point of the lens, or by image processing techniques in a computer.