Foldback-type bi-spectral gaze imaging system

A staring imaging and bispectral technology, applied in optics, measuring devices, instruments, etc., can solve the problem of small field of view, achieve compact structure, high spectral efficiency, and improve sensitivity

Inactive Publication Date: 2010-01-27
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a catadioptric dual-band staring imaging system to solve the problem of small field of view in the visible light and infrared dual-band staring imaging system without increasing the difficulty of system installation and adjustment.

Method used

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  • Foldback-type bi-spectral gaze imaging system
  • Foldback-type bi-spectral gaze imaging system
  • Foldback-type bi-spectral gaze imaging system

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specific Embodiment approach 1

[0007] Specific implementation mode one: the following combination figure 1 This embodiment will be specifically described. The present embodiment is made up of total reflection system 12, refraction system 13 and cold diaphragm 9; Described total reflection system 12 is made up of first reflection mirror 2, second reflection mirror 1 and coated lens 3, the first reflection mirror 2, the second reflection mirror The two reflectors 1 and the coated lens 3 are arranged coaxially, the center of the first reflector 2 has a hole 2-1, and the full-band beam is reflected between the first reflector 2 and the second reflector 1, and the reflected full-band beam passes through the first reflector 2 and the second reflector 1. After the central opening 2-1 of a reflecting mirror 2, the light is split by the coated lens 3, wherein the visible light beam is reflected back to the total reflection system 12, and the first image plane 11 is obtained in front of the total reflection system 12...

specific Embodiment approach 2

[0009] Specific implementation mode two: the following combination figure 1 This embodiment will be specifically described. The difference between this embodiment and the first embodiment is that the diameter of the central opening 2-1 of the first reflector 2 is preferably such that no secondary shading occurs. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0010] Specific implementation mode three: the following combination figure 1 This embodiment will be specifically described. The difference between this embodiment and Embodiment 1 is that the first reflector 2 and the front surface of the coated lens 3 preferably have the same position in the optical path, so as to reduce the structural size of the system and avoid the limitation of beam transmission. Other components and connections are the same as those in the first embodiment.

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Abstract

A foldback-type bi-spectral gaze imaging system relates to a double-waveband gaze imaging system for detecting and identifying a target and solves the problem of small field of view in a visible light and infrared light double-waveband gaze imaging system in the case that the difficulty in system rigging is not increased. The imaging system consists of a full reflection system (12), a reflection system (13) and a cold light diaphragm (9). The full reflection system (12) consists of a first reflection mirror (2), a second reflection mirror (1) and a coated lens (3), which are coaxially arranged. The center of the first reflection mirror (2) is provided with a hole (2-1). The reflection system (13) consists of a first lens (4), a second lens (5), a third lens (6), a fourth lens (7) and a fifth lens (8). The imaging system achieves a relatively large field of view, has a great value for engineering application and can be used for detecting and identifying the target in a complex background or detecting and identifying a small target that is far away.

Description

technical field [0001] The invention relates to a dual-band staring imaging system for detecting and identifying targets. Background technique [0002] In order to be able to detect and identify targets in complex backgrounds, or to detect and identify distant weak targets, dual-band or multi-band imaging systems can be used. Considering the energy utilization efficiency of the system and the compactness of the system structure, a dual-band staring imaging system is usually used, and the dual-band generally refers to the visible light band and the infrared light band. Currently known dual-band imaging systems for visible light and infrared light mostly use the Cassegrain two-mirror system as the main imaging system, and add a parallel plate placed at 45° in the image space for light splitting. The advantage of this solution is that the coating process of the splitting element is relatively easy , but its disadvantage is that the field of view of the system is generally smal...

Claims

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Application Information

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IPC IPC(8): G02B17/08G02B1/10G01J5/00
Inventor 龙夫年王治乐
Owner HARBIN INST OF TECH
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