Measuring cell adapted to spectral analysis

摘要

A measuring cell adapted for a spectral analysis of a gas sample, where this measuring cell is designed and adapted to co-ordinate, from an IR generating element, emitted converging and/or diverging light beams in a direction toward an IR receiving element, by a plurality of reflections of emitted light beams from a number of reflection surfaces assigned to the inner cavity of the measuring cell, thereby creating a predetermined measuring distance in the inner cavity of the measuring cell, from the IR generating element to the IR receiving element. The cavity of the measuring cell is adapted to contain the gas sample intended for a spectroanalytical absorption measurement. Light beams from the IR generating element are, via a reflection surface, convergingly directed to and/or adapted, such as reflectable, in a first reflection surface in order to, when reflected, via a first focal point, as diverging light beams become directed to a second reflection surface, shaped as a concave reflection surface, as well as via third and fourth reflection surfaces become converging to a focal point, in or in the vicinity of the IR receiving element, in order to form a compact measuring cell.

主权项

1. A measuring cell for spectro-analytical absorption measurement and spectral analysis of a gas sample contained in said measuring cell and for electric and mechanical co-operation with a carrier, said measuring cell comprising:
a means for generating light, a means for receiving light, an inner cavity comprising a number of reflection surfaces thus defining a predetermined, optical measuring path length in the inner cavity of the measuring cell, whereby the inner cavity of the measuring cell is defined by a first part and a second part which co-operate with each other, and whereby the first part and/or the second part comprise respective recesses and/or seats, whereby the recesses allow a passage of light beams respectively from the means for generating light and to the means for receiving light, whereby the seats entirely or partly hold the means for generating light and/or the means for receiving light, whereby the number of reflection surfaces comprises a first reflection surface and a second reflection surface having a concave shape, the first reflection surface reflecting light to the second reflection surface, whereby the first part is adapted to rest against said carrier with a first surface facing the carrier being formed with one or two recesses or seats, in order to entirely or partly surround at least said means for generating light, and whereby the first reflection surface light is adapted to direct light generated by the means for generating light to a first plane, separated from a second plane in which said means for generating light is located, and that the first part forms a space facing the carrier for the formation of a protected space for electronic components.