Compact Telephoto Shortwave Optical System with Real-Time Multispectral Imaging

Abstract

The invention provides a compact telephoto short-wave optical system with real-time multi-spectral imaging function, which solves the problems of the existing multi-spectral imaging system, such as insufficient one-time encoding information, complex multi-time encoding system and high cost. The optical system includes a front objective lens group, a dichroic prism, a coding plate, a spectroscopic imaging unit, a first short-wave infrared detector and a second short-wave infrared detector; One path of light is converged and imaged on the first short-wave infrared detector; the other path of light is converged and imaged on the coding board, and the image encoded by the coding board is converged and imaged on the second short-wave infrared detector through the spectroscopic imaging unit; the front objective lens The image-side telecentric light path structure is used in the group; the object-image double-sided telecentric light path structure is adopted in the spectroscopic imaging unit, which includes a negative meniscus lens with a convex surface on the image side and an Offner beam splitting component arranged at intervals along the exit light path of the code plate.

Description

technical field [0001] The invention belongs to the technical field of optical equipment, and in particular relates to a compact telephoto short-wave optical system with real-time multi-spectral imaging function. Background technique [0002] Traditional multispectral imaging technology can obtain a three-dimensional data cube with integrated maps through time scanning or spatial scanning. Time-scanning spectral imagers usually obtain different spectral information in the entire band to be measured by setting different band-pass filters at different time periods; while spatial scanning spectral imagers usually need to move or have moving parts and It is easy to introduce motion and alignment errors; therefore, traditional multispectral imaging technology cannot achieve real-time multispectral imaging function, that is, it is impossible to obtain spatial and spectral three-dimensional data sets directly or through calculation within the integration time of a shutter. [0003...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of the existing multi-spectral imaging system, such as insufficient one-time encoding information, complex multi-time encoding system and high cost, and provide a compact long-focus short-wave optical system with real-time multi-spectral imaging function

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