Spatial full-region ultrahigh-contrast imaging method and coronagraph system

An imaging method and contrast technology, applied in the field of coronagraph systems, can solve problems such as the limited working area of ​​high-contrast coronagraph imaging, and achieve the effects of reducing development cycle and cost, high-pass optical efficiency, and ensuring consistency

Active Publication Date: 2021-11-12
NANJING INST OF ASTRONOMICAL OPTICS & TECH NAT ASTRONOMICAL OBSE
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Problems solved by technology

[0007] In order to solve the problem of limited imaging working area of ​​existing high-contrast coronagraphs, the present invention provides a super-high-contrast imaging coronagraph system for 360° working field of view in space and the whole area

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  • Spatial full-region ultrahigh-contrast imaging method and coronagraph system
  • Spatial full-region ultrahigh-contrast imaging method and coronagraph system
  • Spatial full-region ultrahigh-contrast imaging method and coronagraph system

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[0033] The present invention will be further described in detail below with reference to the accompanying drawings.

[0034] The present invention is China Space Station Engineering Project "Cruise Telescope", National Natural Science Fund Astronomical Combined Key Support Project "Research on High Contrast Improvement Imaging of Large Circular Stitching Mirror Telescope (U2031210" (U2031210 ), The national major scientific research instrument development project "Development of the Solar-Outer Planet High Contrast Imaging Exploration Instrument" (11827804).

[0035] The present invention employs a circular belt pupil transmittance modulation technique, and the transmittance gradient modulation is performed along the system's dysfunction to achieve the suppression of the stars strongly diffracted light. Unlike the floor-to-ground transmittance modulation method, the invention is optimized to 10 in the detection requirements of space-free planet, in particular a class planet. -8 Th...

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Abstract

The invention discloses a spatial full-region ultrahigh-contrast imaging method and a coronagraph system. According to the method, a circular ring band pupil transmittance modulation technology is adopted, transmittance gradual change modulation is carried out in the radial direction of a pupil, inhibition of strong diffraction light of a fixed star is achieved, and energy distribution of the fixed star at the pupil position of the system is changed by adopting a limited-band and bilaterally-symmetrical transmittance modulation band in circular ring band pupil transmittance modulation, and the requirement of optimal high-contrast imaging is met. The limited band and the bilaterally-symmetrical transmittance modulation band are composed of limited transmittance modulation ring bands, the ring band modulation gradually changes from the transmittance of a center band, and the left transmittance and the right transmittance are symmetrically distributed from the center band. The coronagraph system suitable for 360-degree working area observation is provided and completed for the technical problem that an ultrahigh-contrast imaging area is limited, the detection efficiency problem of a space coronagraph is solved, the future planet discovery rate and the observation time utilization rate are improved, and the effective life of an extrasolar planet space detection satellite is prolonged.

Description

Technical field [0001] The present invention relates to a spatial region ultra-high contrast imaging method and a sparum system. Recommended solar outer planetary detection, external cold planetary direct imaging, line-free planet and life signal detection, and spatial astronomical instruments, space, aviation, astronomical terminal instruments, adaptive optical related technologies, particularly involved The spatial stroke system and method for the 360 ​​° full field field work area, large work area, ultra-high contrast imaging, specifically involved in the use of external planets directly imaging directly imaging, high contrast, Symmetric, ringband pupil modulation technology and implementation method. Background technique [0002] The outer-class star refers to a planet other than the solar system, namely a planet system surrounding other stars or a separate planet outside the solar system. The outer planet detection is closely related to the search for the universal civilizat...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/02G02B27/64
CPCG01J3/0229G02B27/64
Inventor 窦江培张熙王钢赵刚许明明
Owner NANJING INST OF ASTRONOMICAL OPTICS & TECH NAT ASTRONOMICAL OBSE
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