Fixed type combined light source of spectrograph

Abstract

The invention provides a fixed type combined light source of a spectrograph, aiming at solving the problem that the service life of a hollow cathode lamp of the traditional instrument light source is shortened. The fixed type combined light source of the spectrograph is characterized in that the hollow cathode lamp and a tungsten lamp are fixed on a lamp bracket, and then a plane mirror is arranged opposite to the hollow cathode lamp and the tungsten lamp; a plane mirror which is driven by a motor to rotate is arranged in the center of a mirror bracket so that light rays emitted by the hollow cathode lamp or the tungsten lamp are sent to a concave mirror and then reflected to a beam splitting mirror from the concave mirror; the light source is internally provided with a deuterium lamp, emitted light rays are reflected to the concave mirror through the plane mirror and then reflected to the beam splitting mirror from the concave mirror, and then the beam-combined light rays are emitted through a color filter positioned on a color filter bracket or a hole without the color filter. The invention has the advantages of prolonging the service life of the hollow cathode lamp and the tungsten lamp because the hollow cathode lamp and the tungsten lamp are fixed on the lamp bracket and enlarging the application range of an instrument by installing the tungsten lamp.

Description

technical field [0001] The invention relates to a light source used in various optical analysis instruments such as atomic absorption spectrometers, atomic fluorescence spectrometers, etc., in particular to a fixed, wide-band light source device that can automatically switch lamp positions. Background technique [0002] At present, the technology of analytical instruments in our country is developing vigorously. However, the existing instrument light sources have some problems such as low degree of automation, few hollow cathode lamps installed, short available wavelength range, unreasonable structure, and shortened life of hollow cathode lamps. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a fixed, wide-band spectrometer fixed combined light source that can automatically switch the lamp position, which can be applied to atomic absorption spectrophotometers and atomic fluorescen...

AI Technical Summary

Problems solved by technology

However, the existing instrument light source has some problems such as low degree of automation, few hollow cathode lamps installed, short available wavelength range, unreasonable structure, and shortened life of hollow cathode lamps.

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