Large-view-field long-light-path imaging system based on double-telecentric relay optics

Abstract

The invention belongs to the technical field of magnetic confinement fusion plasmas, and particularly discloses a large-view-field long-light-path imaging system based on double-telecentric relay optics, which comprises a front-end imaging objective lens, a first-group objective lens and a double-telecentric relay objective lens group connected with the front-end imaging objective lens, the tail end objective lens is connected with the tail group of objective lenses of the double telecentric relay objective lens group; and the camera is connected with the tail end objective lens. The optical path of the system is simple and easy to install and adjust, modular design is achieved, the view field is changed by replacing the fixed-focus objective lens at the front end, or the view field is changed by directly installing a zoom lens, the optical path does not need to be designed on the whole, and large-view-field imaging with high resolution, high luminous flux and low cost can be achieved.

Description

technical field [0001] The invention belongs to the technical field of magnetic confinement fusion plasma, and in particular relates to a large field of view and long optical path imaging system based on bi-telecentric relay optics. Background technique [0002] In the field of magnetic confinement fusion plasma, imaging monitoring of high temperature plasma is necessary. [0003] Visible radiation imaging of plasma, which can observe the displacement, boundary and interaction between plasma and wall, is an important diagnosis for maintaining the safety of device operation. Due to the high magnetic field strength, high-energy particle radiation and line radiation in high-temperature plasma, electronic devices such as imaging detectors (CCD or CMOS) are forced to be far away from the device, which puts forward hardware requirements for long optical path image transmission. There are two ways to realize the long-distance transmission of images: one is based on the image trans...

AI Technical Summary

Problems solved by technology

The advantage of the former is that the fiber bundle can transmit images in a softly bent state, but the imaging resolution will be limited by the core diameter of the fiber bundle; the imaging resolution of the latter can be very high, but the existing technical solutions are often complicated and High cost: most of them use optical design software for integrated optical path design, such as endoscope structure, which has strict requirements on the installation and positioning process of lenses

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