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Big viewing field scanning thermal imaging system based on staring imaging mode

An imaging system, staring imaging technology, applied in optics, measuring devices, instruments, etc., can solve problems such as the contradiction between field of view and spatial resolution

Inactive Publication Date: 2010-01-20
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of conflict between field of view and spatial resolution in existing thermal imaging systems, and to provide a large field of view scanning thermal imaging system based on staring imaging

Method used

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  • Big viewing field scanning thermal imaging system based on staring imaging mode
  • Big viewing field scanning thermal imaging system based on staring imaging mode
  • Big viewing field scanning thermal imaging system based on staring imaging mode

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Experimental program
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specific Embodiment approach 1

[0007] Specific implementation mode one: combine figure 1 , figure 2 and image 3 Describe this specific embodiment, the large field of view scanning thermal imaging system based on the staring imaging method described in this specific embodiment is composed of an aperture stop 1, a first lens group 2, a second lens group 4, a cold light stop 5 and a two-dimensional moving Composed of frame 7, the large field of view imaging system composed of aperture stop 1 and first lens group 2 adopts the image square telecentric optical path form, and the small field of view staring imaging system composed of second lens group 4 and cold light stop 5 is fixed on a two-dimensional On the mobile frame 7, the moving direction of the two-dimensional mobile frame 7 is perpendicular to the direction of the optical axis of the incident light, the input end of the small field of view staring imaging system is connected to the output end of the large field of view imaging system, and the cold li...

specific Embodiment approach 2

[0010] Specific implementation mode two: combination figure 1 Describe this specific embodiment. The difference between this specific embodiment and specific embodiment 1 is that the first lens group 2 is composed of a first lens 2-1, a second lens 2-2, a third lens according to the path of incident light. The lens 2-3 and the fourth lens 2-4 are formed sequentially. Other components and connections of this specific embodiment are the same as those of the first specific embodiment.

specific Embodiment approach 3

[0011] Specific implementation mode three: combination figure 1 Describe this specific embodiment. The difference between this specific embodiment and specific embodiment 1 or 2 is that the second lens group 4 is composed of a fifth lens 4-1, a sixth lens 4-2, The seventh lens 4-3, the eighth lens 4-4 and the ninth lens 4-5 are formed in sequence. Other components and connections of this specific embodiment are the same as those of specific embodiment 1 or 2.

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Abstract

A big viewing field scanning thermal imaging system based on a staring imaging mode relates to a big viewing thermal imaging system and solves the problem that the viewing filed and the space resolution ratio in the existing thermal imaging system are contradictory. The big viewing field scanning thermal imaging system comprises an aperture diaphragm, a first lens group, a second lens group, a cold diaphragm and a two-dimensional movable rack; a big viewing field imaging system formed by the aperture diaphragm and the first lens group adopts a telecentric beam path form in image space; a small viewing field staring imaging system formed by the second lens group and the cold diaphragm is fixed on the two-dimensional moving rack, the movable direction of which is vertical to an optical axis; the input end of the small viewing field staring imaging system is connected with the output end of the small viewing field staring imaging system; and the cold diaphragm is positioned at the output end of the second lens group. The imaging system utilizes the two-dimensional moving rack to drive the small viewing field staring imaging system to move, thus realizing the scanned imagery on primary image surface. The imaging system has the advantages that the system combines the small viewing field stared imaging and the big viewing field scanned imagery, and both can be used for infrared target detection and thermal imaging scouting.

Description

technical field [0001] The invention relates to a large field of view thermal imaging system. Background technique [0002] At present, due to the limitation of the development process of the thermal detector array, the contradiction between the field of view and the spatial resolution of the thermal imaging system has always been prominent. In order to realize target detection or imaging detection with a large field of view on the basis of staring imaging, the object-side scanning method is usually used, that is, a plane mirror that can swing within a certain angle range is added in front of the imaging lens to change the line of sight of the staring imaging system. direction to achieve the purpose of scanning. However, for some specific use cases, such as some guided weapon systems, it is difficult to add a scanning mechanism in front of the imaging objective lens, so that the field of view and spatial resolution of the imaging system cannot be guaranteed at the same time...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B26/08G02B27/00G01J5/00
Inventor 王治乐龙夫年赵明侯晴宇左保军
Owner HARBIN INST OF TECH