Dispersive Hartmann Sensor for Common Phase Detection in Optical Synthetic Aperture Imaging Systems

A technology of synthetic aperture and imaging system, applied in the direction of testing optical performance, etc., can solve the problem of inability to detect translation errors, and achieve the effect of reducing system complexity, assembly difficulty, and detection error.

Active Publication Date: 2017-12-15
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Problems solved by technology

However, the dispersion fringe method can only detect the translation errors between two apertures at the same time, and cannot detect the translation errors between multiple apertures at the same time.

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  • Dispersive Hartmann Sensor for Common Phase Detection in Optical Synthetic Aperture Imaging Systems
  • Dispersive Hartmann Sensor for Common Phase Detection in Optical Synthetic Aperture Imaging Systems
  • Dispersive Hartmann Sensor for Common Phase Detection in Optical Synthetic Aperture Imaging Systems

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] Such as figure 1 Shown is the structure of the dispersion Hartmann sensor of the present invention, which is composed of an interference area selection diaphragm 1, a dispersion element array 2, a lens array 3, and a camera CCD 4. The broadband plane wavefront of the optical synthetic aperture imaging system first passes through the interference area selection diaphragm 1 to select several groups of adjacent two sub-aperture edge beams, and then the corresponding dispersive elements on the dispersive element array 2 of each group disperse the beam groups, and the final beam The group forms several dispersion fringes on the same camera CCD 4 through corresponding lenses on the lens array 3 . These dispersion fringes are formed simultaneously so that translation errors between multiple apertures can be detected simultaneously.

[0025] S...

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Abstract

The invention discloses a dispersion Hartmann sensor for common phase detection of an optical synthetic aperture imaging system, which is composed of an interference area selected aperture, a dispersion element array, a lens array, and a CCD camera; the interference area selected aperture has a A plurality of light holes corresponding to the edges of two adjacent sub-apertures, each light hole has a corresponding dispersion element on the dispersion element array, and the lens array also has lenses matching the dispersion element; the optical synthetic aperture The broadband plane wavefront of the imaging system first selects several groups of adjacent two sub-aperture edge beams through the selected diaphragm of the interference area, and then disperses them by the corresponding dispersion elements of each group, and finally the beam groups pass through their respective lenses on the same camera target surface The independent dispersion fringes are formed simultaneously, and the translation error between multiple sub-apertures can be detected at the same time.

Description

technical field [0001] The invention relates to a translation error (piston error) sensor, in particular to a sensor for detecting the translation error of an optical synthetic aperture imaging system. The invention belongs to the technical field of photoelectric measurement. Background technique [0002] The single mirror aperture of the imaging system has manufacturing technology bottlenecks and payload and volume limitations, which hinder the improvement of the angular resolution of the imaging system. In the 1970s, the optical synthetic aperture imaging technology was proposed to provide a new solution for improving the angular resolution of the imaging system. [0003] However, due to the combination of various factors, there will be translation errors between the multi-apertures, which greatly affect the imaging quality. The translation error is the aberration that has the greatest impact on the image quality of the optical synthetic aperture imaging system. Therefor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M11/02
Inventor 饶长辉李杨王胜千
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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