公开(公告)号：US3924949A

公开(公告)日：1975-12-09

申请号：US23592572

申请日：1972-03-20

Applicant: HITACHI LTD

Inventor： HONKAWA TADASHI ,  FUKUDA KENJI

IPC: G01J3/42 ,  G01J3/427 ,  G01N21/00

CPC classification number: G01J3/42 ,  G01J3/427

Abstract: This spectrophotometer operates either as a spectrum scanning instrument or as a dual wavelength instrument. The conversion of the one type of spectrophotometer into the other is performed through a position change of cuvettes or an exchange of mirror blocks in the optical train thereof.

公开(公告)号：US3902812A

公开(公告)日：1975-09-02

申请号：US47160174

申请日：1974-05-20

Applicant: HITACHI LTD

Inventor： HONKAWA TADASHI

IPC: G01J3/427 ,  G01N21/31 ,  G01J1/42 ,  G01J3/48

CPC classification number: G01N21/314

Abstract: In the quantitative measurement of one of plural components contained in a specimen, three kinds of light wavelengths are used to eliminate the influence of two components except one to be measured. The outputs with respect to the three kinds of wavelengths are converted to the corresponding electric signals, which are in turn subjected to the logarithmic conversion. One output with respect to one of the three kinds of wavelengths is inverted in polarity and the polarity-inverted output is then combined with the other outputs so that the relationship between the light absorption quantity and the wavelength, concerning the component to be measured, can be obtained with the result that the quantity of the component in the specimen can be determined.

Abstract translation: 在样本中包含的多个成分之一的定量测定中，使用三种光波长来消除除了被测量的两种成分之外的两种成分的影响。 相对于三种波长的输出被转换成相应的电信号，然后进行对数转换。 关于三种波长中的一种波长的一个输出在极性上反转，然后将极性反相输出与其他输出组合，使得关于待测量的部件的光吸收量与波长之间的关系可以 结果可以确定样品中组分的量。