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Multispectral composite structure optical system

A composite structure and optical system technology, applied in the field of multi-spectral composite structure optical systems, can solve problems such as narrow spectrum, and achieve the effect of broadening the spectral range

Inactive Publication Date: 2021-03-19
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0003] In order to realize the wide-band and multi-spectrum imaging optical system of the diffractive primary mirror, the present invention provides a multi-spectral composite structural optical system, which solves the problem of the narrow spectrum of the diffractive primary mirror imaging optical system, and expands the spectral bandwidth of the system from visible light to infrared band

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Embodiment Construction

[0017] The present invention will be specifically described below in conjunction with the accompanying drawings and specific embodiments.

[0018] The present invention is a kind of multi-spectral composite structural optical system, which is composed of a primary mirror 1, a first relay mirror 2, a second relay mirror 3, and a secondary mirror 4 to form a visible light imaging optical system. The primary mirror 1 is a diffractive optical element, and its aperture The design center wavelength of the primary mirror is 0.6μm, and the F number of the primary mirror is 7-10. The first relay mirror 2 and the second relay mirror 3 are reflective spherical mirrors, the radius of curvature of the first relay mirror 2 is 740 mm, the radius of curvature of the second relay mirror 3 is 560 mm, and the secondary mirror 4 is a diffraction microstructure etched The reflector, the radius of curvature of the secondary mirror 4 is 200mm. The distance from the primary mirror 1 to the first rel...

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Abstract

The invention provides a multispectral composite structure optical system, which comprises a primary mirror (1), a first relay mirror (2), a second relay mirror (3), a secondary mirror (4), a converging mirror (5) and a turning mirror (6), and is characterized in that the primary mirror (1), the first relay mirror (2), the second relay mirror (3) and the secondary mirror (4) form a diffraction imaging optical system, the primary mirror (1) and the secondary mirror (4) are placed at the conjugate position of a light path formed by the first relay mirror (2) and the second relay mirror (3) to achieve achromatism of visible light so as to achieve broadband visible light imaging, and the first relay mirror (2), the second relay mirror (3), the converging mirror (5) and the turning mirror (6) form a reflection imaging optical system. The reflection imaging optical system can perfectly image near-infrared, medium-wave infrared, far-infrared and other spectral bands, and can realize wide-spectrum imaging from visible light to infrared band.

Description

technical field [0001] The invention belongs to the field of optical design and imaging, and in particular relates to a multi-spectrum compound structured optical system. Background technique [0002] The imaging optical system of the diffractive primary mirror can realize lightweight imaging by making micro-nano structures on thin films or flat substrates, which is one of the development trends of future imaging optical systems, but it is difficult to realize wide-band imaging due to the large chromatic aberration of the diffractive primary mirror. By designing the combination of diffractive imaging optical path and reflective imaging optical path to form a composite structural optical system, the problem of narrow spectral band of diffractive imaging optical system is solved, and wide-spectrum and multi-spectral imaging of optical system can be realized. Contents of the invention [0003] In order to realize the wide-band and multi-spectrum imaging optical system of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/42
CPCG02B27/4205G02B27/4294
Inventor 汪利华杜俊峰边疆吴时彬刘盾高国涵
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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