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:
Aug. 21, 1979
Filed:
May. 16, 1977
Wolfgang W Witte, Uberlingen, DE;
Bodenseewerk Perkin-Elmer & Co., GmbH, Uberlingen, DE;
Abstract
In a spectrophotometer having a cuvette, a photoelectric detector having a photosensitive surface, a light source arranged for passing a light beam through the cuvette onto the photosensitive surface, an imaging optical system arranged between the cuvette and the photosensitive surface or a rear image thereof being located in a focal plane of the optical system outside the image plane of the light source, whereby the light beam impinges on the photosensitive surface as a relatively large light spot of substantially uniform illumination and, as a result, the location and size of the light spot is not adversely affected by parallel offset, and the demands as to accuracy and alignment of the cuvette are reduced.