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:
May. 10, 2011
Filed:
Dec. 11, 2008
Hajime Bungo, Muko, JP;
Hajime Bungo, Muko, JP;
Shimadzu Corporation, Kyoto, JP;
Abstract
When the apparatus is energized or a validation check is performed, a deuterium lampis turned on, and an output value resulting from an A/D conversion of the detection signal for light with a wavelength of 235 nm is obtained. A data processorcompares the output value with an upper limit value, which was determined and stored beforehand in a memory(normally, in the manufacturing stage of the apparatus). If the output value is not less than the upper limit, a controlleroperates an aperture driverto reduce the light quantity by means of an adjustable aperture. This operation prevents an excessive quantity of light from reaching a photodetector, so that the measurement without absorption by a sample solutioncan be correctly performed, and the absorbance by the sample solutioncan be correctly calculated.