Long-wave infrared panoramic periscope device

Abstract

The invention relates to a long-wave infrared panoramic periscope device. The long-wave infrared panoramic periscope device comprises an adapting lens cone butted up and down, a device support frame,a panoramic annular band imaging lens assembled in the adapting lens cone and an infrared detector component located in the device support frame and connected with the adapting lens cone, wherein thepanoramic annular band imaging lens comprises a main lens cone assembled in the adapting lens cone and also comprises a panoramic annular band lens, a front image transferring lens, a middle image transferring lens and a rear image transferring lens which are successively mounted along a center hole of the main lens cone; the thickness of the center of the panoramic annular band lens is close to the diameter of the panoramic annular band lens; the infrared detector component comprises an infrared detector directly facing the rear image transferring lens, a correction baffle, a correction motorused for driving the correction baffle to swing in a small angle to control shielding of the infrared detector and a tension spring with a telescopic end connected with the correction baffle. The device is concentrated in a small-volume space, is capable of achieving inhibition and non-uniform correction of stray light of the panoramic annular band imaging lens and achieving stare long-wave infrared imaging of long-wave infrared band instantaneous peripheral 360-degree target monitoring.

Description

technical field [0001] The invention belongs to the technical field of long-wave infrared sensors, and in particular relates to a long-wave infrared panoramic periscope device. Background technique [0002] In shipborne, submarine, and airborne optoelectronic systems such as tracking, search and navigation, it is increasingly required that the optical system has a larger observation field. At the same time, in special fields, such as periscope systems, airborne systems put forward higher and higher requirements for the volume and weight of optical systems. The biggest design challenge for periscopes should be strict volume requirements. In order to ensure compatibility In the existing photoelectric mast system, the entire sensor system (including optoelectronics) needs to be placed in a small cylinder to detect heat effectively, requiring the optical system to achieve a large field of view within a limited small volume space ( panorama) gaze imaging. [0003] Meeting the m...

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Problems solved by technology

Famous domestic universities such as Tsinghua University and Sichuan University have carried out preliminary theoretical and experimental verification research based on the principle of planar cylindrical projection. However, the previous panoramic imaging system (360° field of view) was designed mainly in the visible light band, and there are several different structures. To achieve the required field of view, these structures include rotating cameras, multi-camera stitching, catadioptric systems, and fisheye lenses. The first three solutions increase the complexity and size of the system, and cannot obtain a 360° field of view in real time. Fisheye The lens has been used in several imaging systems with a large field of view, but its spatial resolution varies, and the resolution near the horizontal field of view is the smallest, and when the field of view needs to cover the entire hemisphere, this lens will become very difficult. Big

[0005] Based on the limitation of volume and speed, the panoramic ring lens can be considered to realize the long-wave infrared panoramic periscope application, but the panoramic ring has a large field of view, and it is easy to introduce stray light, and the panoramic ring lens needs to be completed on one lens. Therefore, the main difficulties of the long-wave infrared panoramic periscope include: stray light suppression, panoramic ring lens processing, non-uniformity correction

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