Dispersion Hartmann sensor used for optical synthetic aperture imaging system inphase detection

A synthetic aperture and imaging system technology, applied in the direction of testing optical performance, etc., can solve problems such as inability to detect translation errors, achieve the effects of reducing system complexity, increasing reliability, and reducing detection errors
CN105300664AActive Publication Date: 2016-02-03INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
Publication Date
2016-02-03

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Abstract

The invention discloses a dispersion Hartmann sensor used for optical synthetic aperture imaging system inphase detection. The sensor is composed of an interference region selected diaphragm, a dispersion element array, a lens array and a CCD camera. A number of light through holes which are corresponding to two adjacent sub-aperture edges are arranged in the interference region selected diaphragm. Each light through hole is provided with a corresponding dispersion element in the dispersion element array. Lenses which match the dispersion elements are arranged on the lens array. Groups of two adjacent sub-aperture edge beams are selected through the interference region selected diaphragm before a broadband plane wave of an optical synthetic aperture imaging system. The dispersion elements corresponding to the groups are used to disperse the beams. The beam groups form independent dispersion stripes on the sane camera target surface through the lenses at the same time. Translation errors of a number of sub-apertures are detected at the same time.
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Description

technical field

[0001] The invention relates to a translation error (pistone 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. Therefo...

Claims

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