Arrangement for the spectral analysis of substances

Details Arrangement for the spectral analysis of substances Arrangement for the spectral analysis of substances

1976-03-10

1978-07-11

McGraw, Vincent P.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356 79, 356 99, G01J 330, G01J 312

Patent

active

040998738

ABSTRACT:
An arrangement of the Rowland character includes a support and a concave grating on the support for producing the spectrum characteristic of a sample being investigated. The support has a series of slits thereon which are positioned on the Rowland circle and are adjusted to the spectral lines of samples to be investigated. An element on the support is provided with a primary slit for directing the radiation derived from a sample being investigated onto the concave grating. The primary slit is positioned on the Rowland circle and the element provided with the primary slit is mounted on the support for movement along the arc of the Rowland circle. The element is mounted in such a manner as to be arrestable in a plurality of positions. The element is favorably in the form of a plate. A preferred embodiment contemplates the provision of a pair of grooves in the support, which latter may be in the form of a housing, with the grooves following the curvature of the Rowland circle and the element being guided in the grooves. The edges of the element located in the grooves may be provided with openings in which there are accommodated spherical members as well as biasing elements for urging the spherical members into contact with the grooves.

REFERENCES:
patent: 2279646 (1942-04-01), Smith
patent: 2837959 (1958-06-01), Saunderson et al.
patent: 3277774 (1966-10-01), Landon et al.

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