Coaxial field-biasing type long-wave infrared system based on spherical reflecting mirror

A spherical mirror, long-wave infrared technology, applied in optical components, optics, instruments, etc., can solve the problems of low transmittance, concentric multi-scale system solutions are difficult to apply to the infrared band, etc., to achieve large imaging width, conducive to Effects of stray light suppression, volume and mass reduction

Pending Publication Date: 2018-12-21
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

Although the above patents are different in content, they all have in common the concentric multi-scale design based on concentric spherical lenses
Affected by the low transmittance of infrared materials, the transmissive concentric multi-scale system scheme is difficult to apply in the infrared band

Method used

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  • Coaxial field-biasing type long-wave infrared system based on spherical reflecting mirror
  • Coaxial field-biasing type long-wave infrared system based on spherical reflecting mirror
  • Coaxial field-biasing type long-wave infrared system based on spherical reflecting mirror

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Embodiment Construction

[0037] The present invention will be further described below in conjunction with the accompanying drawings.

[0038] Such as Figure 1a , Figure 1b , Figure 6 and Figure 7 As shown, it is a schematic structural diagram of the optical system of the present invention, and a spherical mirror 1 is placed on the optical path. In order to separately suppress stray light for the imaging channel corresponding to each correction mirror group, and make full use of the optical characteristics of the spherical mirror 1 full-field rotational symmetry, each imaging compensation mirror is sequentially placed at the corresponding position in front of the spherical mirror 1 according to the optical design results group; the imaging beams of each imaging channel are effectively separated, which avoids the interference of local strong light sources on the entire field of view, and can realize imaging detection with a large dynamic range. Combined with the push-broom imaging mode, the imagi...

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Abstract

The invention provides a coaxial field-biasing type long-wave infrared system based on a spherical reflecting mirror. The coaxial field-biasing type long-wave infrared system comprises a spherical reflecting mirror and a plurality of imaging compensation lens groups with diaphragms, wherein the spherical reflecting mirror and the plurality of imaging compensation lens groups are arranged successively along the light propagation direction. Each imaging compensation lens group with a diaphragm forms one independent imaging channel. The system is a coaxial system; and main light of each channel deviates at a specific view field to avoid mutual shielding of the imaging compensation lens group and the incident light. The plurality of imaging compensation lens groups are distributed at a light emitting part of the concentric spherical reflecting mirror in a fan-shaped manner; and the imaging compensation lens groups and the incident light are not on a same plane. The imaging compensation lens groups include a plurality of short-focus compensation mirrors, a plurality of medium-focus compensation mirrors and a plurality of long-focus compensation mirrors. The plurality of imaging compensation lens groups employ different correction mirror groups with different focuses to correct aberration for different view fields, thereby ensuring a constant high resolution.

Description

technical field [0001] The invention relates to the field of optical imaging, in particular to a coaxial off-field long-wave infrared system based on a spherical reflector. It is mainly used for space-borne large-scale medium-resolution meteorological observation, and can also be used in urban security monitoring, national land census, disaster prevention and mitigation and other fields. Background technique [0002] Satellite ocean remote sensing plays an important role in the observation and research of the global marine environment and marine resources. It is characterized by rapid, continuous, large-scale and simultaneous observation of multiple parameters. A number of meteorological satellites have been launched around the world to detect oceans. The main remote sensor includes a visible light multispectral scanning radiometer, which is characterized by high sensitivity and signal-to-noise ratio, wide scanning field of view, and small imaging distortion. The current sa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B17/08
CPCG02B17/08
Inventor 王虎沈阳薛要克刘美莹樊学武刘阳潘越王芳肖南叶水福
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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