公开(公告)号：US4329048A

公开(公告)日：1982-05-11

申请号：US129203

申请日：1980-03-11

Applicant: Robert Capitini ,  Paul Roveyaz

Inventor： Robert Capitini ,  Paul Roveyaz

IPC: G01J3/427 ,  G01N21/85 ,  G01J3/42 ,  G01J3/48 ,  G01N21/05

CPC classification number: G01J3/427 ,  G01J3/08

Abstract: Spectrum analyzer for the light absorption of a solution comprising a small transparent measuring cell containing the solution; a light source; means for dividing the beam of light of the source into two beams, one being the reference beam and the other the measuring beam transmitted respectively to a reference absorber element and to the measuring cell; means for selecting the measuring wavelength; means for modulating the reference and measuring beams which have respectively traversed the absorber element and the measuring cell; means for detecting the energies of each of the modulating beams after they have traversed the reference absorber element and the sample; the modulation means comprising alternate transparent and bireflecting sectors in front of each of the beams which have passed through the reference absorber and the measuring cell, said sectors being associated with means for selecting the wavelength of the beams in such a way that, as a function of the successive positions of the sectors relative to the beams, the detection means alternately receive the light transmitted by the sample and that transmitted by the absorber, the latter being such that it can independently absorb radiations of different wavelengths transmitted by the source and corresponding to the wavelength of the radiations absorbed by the components of the solution, means for comparing the energies of the modulated beams connected to detection means, wherein the modulation means are positioned directly behind the cell along the path of the divided measuring beam and immediately behind the absorber element on the path of the reference beam, the means for dividing the beam of the source being arranged in such a way that the measuring beam is converged on the cell.

Abstract translation: 光谱分析仪，用于吸收包含含有溶液的小透明测量池的溶液; 光源; 用于将源的光束划分成两个光束的装置，一个是参考光束，另一个是分别传输到参考吸收元件和测量元件的测量光束; 用于选择测量波长的装置; 用于调制参考和测量分别穿过吸收体元件和测量单元的光束的装置; 每个调制光束在经过参考吸收元件和样品之后检测能量的装置; 调制装置包括在已经通过参考吸收器和测量单元的每个光束前面的交替的透明和双折射扇区，所述扇区与用于以这样的方式选择波束的波长的装置相关联， 所述检测装置交替地接收由样品透射的光，并且由吸收体传输的光使得其可以独立地吸收源发射的不同波长的辐射并对应于 由溶液的分量吸收的辐射的波长，用于比较连接到检测装置的调制束的能量的装置，其中调制装置沿着分割的测量光束的路径直接位于单元的后面，并且紧接在吸收体的后面 元件在参考光束的路径上，用于分割的装置 源的光束以使得测量光束会聚在单元上的方式布置。