A checkerboard imager and its realization method

An implementation method and imager technology, applied in the direction of instruments, telescopes, light guides, etc., can solve the problems of no practical technical solutions for the development of 3D optical waveguides, incomplete spatial frequency sampling of SPIDER, and failure to solve the problem of beam crossing loss, etc., to achieve Improve optical efficiency and modular development yield, avoid physical crossover problems, and improve the effect of module yield

Active Publication Date: 2022-07-29
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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  • Abstract
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AI Technical Summary

Problems solved by technology

The SPIDER imaging system adopts a gear-shaped arrangement structure, which has the problem of incomplete sampling in the spatial frequency domain and poor image quality
In 2017, the Shanghai Institute of Technical Physics proposed "A Compact Rectangular Aperture Arrangement Structure and Sampling Method for Target Spatial Frequency" (201711000143.2) to solve the problem of incomplete SPIDER spatial frequency sampling, and subsequently published a scientific paper (System design for a "checkerboard "imager, Applied Optics, Vol.57, No.35) used 3D optical waveguides for aperture-pair paired beam transmission, but did not elaborate on the spectral splitting scheme, did not solve the problem of beam crossing loss, and did not give the development and implementation of 3D optical waveguides Technical solutions

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  • A checkerboard imager and its realization method
  • A checkerboard imager and its realization method
  • A checkerboard imager and its realization method

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Embodiment

[0043] A preferred embodiment of a checkerboard imager of the present invention has a designed working wavelength of 500nm to 600nm, divided into 10 working narrow spectrum bands, each band width is 10nm, the rectangular aperture pair array size is 31×31, the maximum baseline The length is 150mm, the aperture unit diameter of the matrix aperture pair array is 10mm, and the F number is 10.

[0044] see figure 1 , a preferred embodiment of the present invention, array 1, 2D optical waveguide grating array 2, 3D optical waveguide beam transmission array 3, 2D optical waveguide quadrature modulation coupler array 4 and photoelectric conversion data acquisition and The image processing module 5 is constituted. The aperture pair array 1 is located at the front, and the sub-apertures gather the wide-spectrum object light, which is then collected by the rear 2D optical waveguide grating array 2 and split into a narrow-spectrum beam, which is output to the 3D optical waveguide beam tr...

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Abstract

The invention relates to the field of photoelectric imaging, in particular to a checkerboard imager, comprising a rectangular array of aperture pairs, a 2D optical waveguide grating array, a 3D optical waveguide beam transmission array, a 2D optical waveguide quadrature modulation coupler array and photoelectric conversion data. It consists of acquisition and image processing modules. The object light is converged by the aperture to the sub-aperture of the array, and then collected by the 2D optical waveguide grating array and split into a narrow-spectrum beam, which is output to the 3D optical waveguide beam transmission array to complete the cross-pairing, and then modulated by the 2D optical waveguide quadrature modulation coupler array. Coupling, and finally reaches the photoelectric conversion data acquisition and image processing module to obtain the object image. The present invention also includes a method for realizing the checkerboard imager. The invention improves the optical efficiency of the checkerboard imager, expands the equivalent oral meridian, and improves the working capability of the checkerboard imager. The present invention adopts an implementation method in which each module is first manufactured independently and then integrated, thereby improving the yield of the module and the imager.

Description

technical field [0001] The invention relates to the field of photoelectric imaging, in particular to a checkerboard imager and a realization method. Background technique [0002] In 2012, Lockheed Martin proposed a segmented planar photoelectric detection imaging technology (SPIDER, SegmentedPlanar Imaging Detector for Electro-optical) based on optical interference in view of the limitations of traditional telescopes due to their large size, heavy weight, and difficulty in assembly and transportation. Reconnaissance), this technology is based on the principle of interference imaging, which is different from the large and bulky lenses in traditional telescopes. It uses thousands of lens arrays to collect light, and uses photonic integration technology to integrate lens arrays and waveguide arrays on the substrate, that is, thousands of The interferometric telescope array is miniaturized on a chip. The technology combines optics, processing systems and readout circuitry on a ...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G02B6/124G02B23/00
CPCG02B6/124G02B23/00G02B6/06G02B27/1013G02B6/12009G02B5/005H04N23/55G02B6/12002G02B6/12014G02B6/12019G02B6/4219G02B27/0012
Inventor于清华
OwnerSHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI