Multispectral Imaging Optical System Based on Concentric Spherical Focusing Components

Abstract

The invention relates to a novel multispectral imaging optical system based on a concentric sphere focusing element, and belongs to the technical field of multispectral imaging, aiming at solving the problem existing in a current multispectral imaging device so as to satisfy the using requirement for real-time, quick and accurate imaging for the current multispectral imaging device. The novel multispectral imaging optical system based on a concentric sphere focusing element is characterized in that: incident rays can be imaged to a slit through convergence of rays by passing through a front object lens, and then are incident to a collimating lens; the rays are incident to a light splitting grating through collimating of the collimating lens; and the light splitting grating divides the rays into rays of different spectrum bands; the rays of different spectrum bands converts spectrum samples into spatial samples of different incidence angles through the concentric sphere focusing element, and then the rays are focused and imaged on a CMOS detector through a relay imaging lens, and then the spectrum information is obtained. The relay system of the novel multispectral imaging optical system based on a concentric sphere focusing element provides a virtual diaphragm for the concentric sphere focusing element, improves the diaphragm freedom degree of the concentric sphere focusing element, enables the incident rays of different angles to have the same paraxial characteristic, has a common-optical-path multi-optical-axis characteristic, and can realize multispectral staring imaging.

Description

technical field [0001] The invention relates to a multispectral imaging optical system based on a concentric spherical focusing element, belonging to the technical field of multispectral imaging. Background technique [0002] With the gradual development of spectral imaging technology, multispectral imaging equipment has been widely used in many fields. Therefore, how to quickly and accurately obtain spectral images of multiple different bands is of great significance to the research of spectral imaging technology. The Chinese patent application number is "201010190068.2", and the patent name is "Optical System of Multispectral Area Array CCD Imager". The system uses two lens groups and corresponding detectors to obtain information in different bands and perform imaging; the second subsystem uses two germanium lenses and long-wave infrared detectors to image the obtained information to achieve long-wave infrared spectrum Information; the invention uses two sets of optical ...

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Problems solved by technology

[0004] In order to solve the problems existing in the existing multispectral imaging device, the present invention provides a real-time multispectral imaging optical system based on concentric spherical focusing elements to meet the real-time, fast and precise imaging requirements of modern multispectral imaging

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