Visible light-short-wave infrared-medium-wave infrared-long-wave infrared four-band optical system

A short-wave infrared and optical system technology, applied in optics, optical components, instruments, etc., can solve problems such as limited information, inability to meet the needs of comprehensive and more accurate target detection, and achieve simplified system structure, compensation for astigmatism, and avoid oversize big effect
CN112180577BActive Publication Date: 2021-07-27XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
Publication Date
2021-07-27

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Abstract

The present invention provides a visible-short-wave infrared-medium-wave infrared-long-wave infrared four-band optical system, which solves the problem that the existing single-band equipment can detect limited information and cannot meet the needs of more comprehensive and accurate target detection. The system includes a main reflector, a secondary reflector, a first folding mirror, a first beam splitter, an infrared focusing mirror group, a second beam splitter, a visible light channel subsystem, a short-wave infrared channel subsystem, a mid-wave infrared channel subsystem and The long-wave infrared channel subsystem; the secondary reflector divides the light beam reflected by the main reflector into two paths, which are respectively visible light-short-wave infrared and medium-wave infrared-long-wave infrared light; the visible light-short wave infrared light beam passes through the first folding mirror, the second After a beam splitter, it is divided into two channels and enters the visible light channel subsystem and the short-wave infrared channel subsystem respectively; the medium-wave infrared-long-wave infrared beam is divided into two channels after passing through the infrared focusing mirror group and the second beam splitter, and enters the medium-wave infrared channel respectively subsystem and long-wave infrared channel subsystem.
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Description

technical field

[0001] The invention relates to a four-band optical system, in particular to a visible light-short-wave infrared-medium-wave infrared-long-wave infrared four-band optical system. Background technique

[0002] The visible light optical system can receive objects that emit light by themselves or objects that reflect light outward after being illuminated by other light. Its performance at night and low-light conditions is greatly reduced or even unusable. In addition, it is susceptible to environmental interference. Difficult to observe when obstructed. The infrared optical system receives the thermal radiation of the target itself. No matter it is day or night or the environmental visual conditions are poor, the infrared optical system can realize observation. Compared with the visible light optical system, the infrared optical system can identify more safely and covertly. target or camouflaged target.

[0003] With the continuous improvement of target camouf...

Claims

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