IMPROVEMENTS IN ADJUSTABLE ECHELLE SPECTROMETER ARRANGEMENTS

    公开(公告)号:GB2204964B

    公开(公告)日:1991-05-15

    申请号:GB8810135

    申请日:1988-04-28

    Abstract: An adjustable Echelle spectrometer arrangement which can be used in single- and multi-element analysis by the emission or absorption of optical radiation. To compensate all the manufacturing and setup errors, the only arrangements present are those to change the height of the entry slit arrangement above the base plate and to rotate the dispersion prism about a first axis, approximately parallel to its roof edge, and about a second axis, that is vertical thereto. This compensates for the effect of errors associated with component and setup parameters which results from greater tolerances, without impairing mechanical and thermal stability and imaging quality.

    4.
    发明专利
    未知

    公开(公告)号:FR2556093B1

    公开(公告)日:1989-07-13

    申请号:FR8417595

    申请日:1984-11-19

    Abstract: The invention relates to an arrangement and method for multielement analyse of chemical elements in which light cables are used to transmit spectral lines or bands produced by an optical dispersion means from a sample material radiation to an array of photodetectors. The light cable end-portions are inserted as many as required for a definite analyzing program into holes of a plug-in unit and are associated via a mask to definite photodetectors. The plug-in unit is displaceable relative to the mask so that the spectral informations from definite light cables associated to definite spectral lines or bands are evaluated in groups which require similar or equal excitation conditions. The latter are adjustable by respective means.

    7.
    发明专利
    未知

    公开(公告)号:FR2556093A1

    公开(公告)日:1985-06-07

    申请号:FR8417595

    申请日:1984-11-19

    Abstract: The invention relates to an arrangement and method for multielement analyse of chemical elements in which light cables are used to transmit spectral lines or bands produced by an optical dispersion means from a sample material radiation to an array of photodetectors. The light cable end-portions are inserted as many as required for a definite analyzing program into holes of a plug-in unit and are associated via a mask to definite photodetectors. The plug-in unit is displaceable relative to the mask so that the spectral informations from definite light cables associated to definite spectral lines or bands are evaluated in groups which require similar or equal excitation conditions. The latter are adjustable by respective means.

    8.
    发明专利
    未知

    公开(公告)号:FR2566902B1

    公开(公告)日:1989-10-27

    申请号:FR8509825

    申请日:1985-06-27

    Abstract: The invention relates to an optical system for spectral analysis devices particularly for use in atomic emission spectroscopy in which the aberrations, astigmatis and coma are compensated separately, comprising two concave spherical reflectors adjacently arranged and having their vertices equidistantly located relative to a center of a dispersing member. The latter has a dispersion plane at right angles to the dispersing structure of the dispersing member and to its surface, the vertices are located in said dispersion plane. The center beams originating from an excitation light source are reflected at the reflectors in reflection planes which are at right angles to the dispersion plane. The light entrance of the optical system comprises two slits the images of which coincide in a focal plane. The center of the focal plane and the light entrance have a same distance to the dispersion plane and are located on different sides of the latter.

    Method and arrangement for simultaneous analysis of a plurality of chemical elements

    公开(公告)号:GB2157420A

    公开(公告)日:1985-10-23

    申请号:GB8501141

    申请日:1985-01-17

    Abstract: An arrangement and method for multi-element analysis of chemical elements in which light cables (4) are used to transmit spectral lines or bands produced by an optical dispersion means (1) from a sample material radiation beam (17) to an array of photodetectors (6). The light cable exit end-portions are inserted as many as required for a particular analyzing programme into holes of a plug-in unit (9) and are associated via a mask (7) having slits (12) to particular photodetectors (6). The plug-in unit (9) is displaceable relative to the mask (7) so that the spectral informations from particular light cables (4) associated with particular spectral lines or bands are evaluated in groups which require similar or equal excitation conditions.

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