Multiple-optical-range method and device for achieving multiple optical ranges and variable optical-range number

Abstract

The invention provides a multiple-optical-range method and a device for achieving multiple optical ranges and a variable optical-range number. The method includes the following steps: 1) light incident into an angle mirror is reflected back to the angle mirror through a first reflector after being shot from the angle mirror; 2) the light reflected back to the angle mirror in the step 1) is reflected back to the angle mirror through a second reflector after being shot from the angle mirror, wherein the second reflector rotates around the symmetry axis of the angle mirror clockwise or anticlockwise to from the variable optical-range number; and 3) the light reflected back to the angle mirror in the step 2) is completely shot after being reflected through the angle mirror. The method for achieving multiple optical ranges and the variable optical-range number is low in calibration accuracy and easy to realize for engineering, and the device for achieving the multiple optical ranges and the variable optical-range number can be used as a moving device as well as a fixed device.

Description

technical field [0001] The invention belongs to the field of optical technology, and relates to a multi-optical path method and device for realizing fixed and variable optical paths by using a corner mirror. Background technique [0002] Spectroscopy is an important means to obtain material structure and chemical composition, determine the content of material elements, and study atomic energy levels. It has been widely used in industrial and agricultural production, scientific research, environmental monitoring, aerospace remote sensing and other fields. [0003] The emergence of interferometric spectrometers overcomes the shortcomings of low energy utilization of traditional dispersive spectrometers (splitter prisms, dispersive prisms, and diffraction gratings, etc.), while time-modulated interferometric spectrometers inherit the advantages of traditional interferometric spectrometers and integrate multiple channels (Felleget advantages) , high throughput (Jacquinot advanta...

AI Technical Summary

Problems solved by technology

The optical system of the Herriott type long-range pool is composed of two concave reflectors. It is characterized by a simple structure and relatively easy adjustment of the optical path, but the aperture angle is small. It is suitable for laser light sources, but the number of optical paths of these multiple optical paths is fixed. , there is no multi-path device with variable optical path number

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