High-resolution micro broad-spectrum reflective optical system for spectrograph

Abstract

The invention discloses a high-resolution micro broad-spectrum reflective optical system for a spectrograph, which relates to the field of optical analytical instruments and solves the problems of low spectral resolution capacity, low optical energy transfer efficiency and complex instrument processing, installation and debugging of the instrument having the conventional optical system. The system of the invention comprises an optical fiber interface, a slit, a collimator objective, an imaging objective, a detector image surface, a planar reflection grating and a rotating platform, wherein the planar reflection grating is arranged on the rotating platform, a sample light source is coupled to the optical fiber interface and projected into the collimator objective from the slit; the parallel light beam emitted by the light source and transmitted out from the collimator objective is projected to the planar reflection grating and reflected to the imaging objective; the light beam transmitted out from the imaging objective is imaged onto the detector image surface to form an image signal, and the spectral absorption components of the sample light source can be analyzed; and the collimator objective and the imaging objective are spherical reflector. The system can be widely used in portable spectrograph for field geological and hydrologic survey and military reconnaissance.

Description

technical field [0001] The invention relates to the field of optical analysis instruments, in particular to an optical system of a high-resolution, miniature and wide-spectrum reflective grating spectrometer. Background technique [0002] Micro-miniature fiber optic spectrometers have many advantages that large-scale spectrometers do not have, such as light weight, small size, fast detection speed, easy to use, can be integrated, can be mass-produced and low cost, etc., can be used in laboratory physical and chemical analysis, clinical Medical testing, industrial process monitoring, aerospace remote sensing and other fields. [0003] At present, the miniaturization of the structure of spectroscopic instruments often leads to the following three problems: first, the performance indicators of the instrument are poor, mainly due to spectral resolution; second, the efficiency of light energy transmission is low; third, the processing and assembly are complicated and difficult L...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of poor spectral resolution, low light energy transfer efficiency and complicated instrument processing and adjustment of existing optical system instruments, the present invention provides a high-resolution, miniature, wide-spectrum reflective spectrometer optical system

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