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:
Jan. 24, 1978
Filed:
Jun. 17, 1976
Applicant:
Inventors:
Assignee:
Shimadzu Seisakusho Ltd., Kyoto, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01J / ;
U.S. Cl.
CPC ...
356 96 ; 356 51 ;
Abstract
A spectrophotometer which uses as a detector a silicon photocell and a phototube sensitive to short wavelengths. The light from the sample cell is divided into a smaller and a larger portion. The smaller portion is projected onto the silicon photocell and the larger portion, to the phototube. The two outputs are combined and amplified for indication. The whole of the light transmitted through the sample cell may also be projected to the phototube while the spectrophotometer operates in the short wavelength region and alternatively to the silicon photocell while the instrument operates in the long wavelength region.