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. 06, 1999
Filed:
Oct. 10, 1997
Hajime Bungo, Kyoto, JP;
Shimadzu Corporation, Kyoto, JP;
Abstract
A multi-channel type spectro-photometer not only has a light source, a sample cell to which light from the light source is directed, a spectrometer to which light transmitting through the sample cell is directed, and an array of photo-diodes to which dispersed light from the spectrometer is directed, but also allows the user to specify a range of wavelength within which measurements are to be taken. An optimum charge-accumulating time during which charge is to be accumulated on the photo-diodes array is automatically set according to the range specified by the user. Alternatively, quantity of light received by the photo-diode array may be detected and an optimum charge-accumulating time may be automatically set according to the measured light intensity on the photo-diode array. Dark current and background measurements are taken before a sample is injected into the sample cell and transmitted light therethrough is measured to obtain the absorption spectrum of the sample.