Refrigerated common-aperture medium/long infrared dual-band dual-field of view two-speed zoom optical system

Abstract

The invention discloses a refrigeration type common-caliber m medium / long-wave infrared double-waveband double-view-field dual-shift zoom optical system. The system comprises a first double-crescent positive lens, a second double-crescent positive lens, a first double-crescent negative lens, a third double-crescent positive lens, a second double-crescent negative lens, and a first light splitting prism for reflecting medium-wave infrared light and transmitting long-wave infrared light which are successively arranged along an optical axis. A reflection optical path of the medium-wave infrared light passing through the first light splitting prism is successively provided with a fourth double-crescent positive lens, a dual separate lens group, a first dual convex lens, a second dual concave lens, a sixth double-crescent positive lens and a seventh double-crescent positive lens, and a transmission optical path of the long-wave infrared light passing through the first light splitting prism is successively provided with an eighth double-crescent positive lens, a second dual convex lens, a third dual concave lens, a third double-crescent negative lens and a ninth double-crescent positive lens. The dual separate lens group is composed of a first dual convex lens and a fifth double-crescent positive lens. According to the system provided by the invention, a target image can be tracked, detected and captured in a high-accuracy manner.

Description

technical field [0001] The invention belongs to the technical field of optical equipment, and in particular relates to a cooling-type common-aperture mid / long-infrared dual-band dual-field-of-view two-speed zoom optical system. Background technique [0002] In order to quickly and timely find the target in an all-weather environment, and realize the real-time tracking and precise measurement of the target, the requirements for the miniaturization, response speed and real-time performance of the infrared imaging optical system are getting higher and higher. With the wide application in the field of industrial detection and security detection, and the increasingly complex application environment, it is required to obtain images of different fields of view of the target, as well as infrared images of the target. In this context, a multi-band integrated continuous zoom infrared optical system came into being. The infrared dual-band system can simultaneously detect the measured o...

AI Technical Summary

Problems solved by technology

[0003] Existing cooling optical systems mostly use a primary imaging structure, the radial size of the system is too large, and the volume also increases accordingly. For the existing infrared dual-band optical system, the imaging channels of mid-wave infrared and long-wave infrared are usually designed separately , and then clamped together to form an infrared dual-band optical system, which also leads to a larger system volume

In addition, the zoom form of the optical system is mostly continuous zoom or horizontal switching zoom. This type of optical system needs to switch back and forth according to different wavelength bands and fields of view during the observation process. The process of continuous zoom search for targets and optical path switching takes a long time. and slow response

Images