Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Spatial broadband ultra-high contrast imaging method and coronagraph system

An imaging method and high-contrast technology, applied in radiation pyrometry, spectrometry/spectrophotometry/monochromator, instruments, etc. Machining accuracy, reducing the difficulty of development, and ensuring the effect of high-precision development

Active Publication Date: 2021-11-12
NANJING INST OF ASTRONOMICAL OPTICS & TECH NAT ASTRONOMICAL OBSE
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems of narrow working wavelength bandwidth and low light transmission efficiency of the existing high-contrast coronagraph, the present invention provides a wide-band ultra-high-contrast imaging method and a coronagraph system

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Spatial broadband ultra-high contrast imaging method and coronagraph system
  • Spatial broadband ultra-high contrast imaging method and coronagraph system
  • Spatial broadband ultra-high contrast imaging method and coronagraph system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0033] The present invention is an engineering project of China Space Station "Exoplanet Imaging Coronagraph Module of Survey Telescope" and National Natural Science Foundation of China Astronomy Joint Key Support Project "Research on Key Technology of Exoplanet High Contrast Imaging for Large-Aperture Splicing Mirror Telescope" (U2031210 ), the national major scientific research instrument development project "Development of high-contrast imaging detection instrument for exoplanets around faint stars" (11827804).

[0034] The invention adopts the pupil transmittance modulation technology to perform change modulation of the transmittance along the two-dimensional space direction of the pupil of the coronagraph system, so as to realize the suppression of the strong light of the stars on the axis. Different from the traditional transmittance modulation method, ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a spatial broadband ultra-high contrast imaging method and a coronagraph system. According to the method, a pupil transmittance modulation technology is adopted, change modulation of transmittance is carried out in the two-dimensional space direction of a pupil, inhibition of strong light of a fixed star on the axis is achieved, a two-dimensional shape modulation method based on bright and dark strips is adopted, the pupil plane is composed of the bright and dark strips of a limited strip, and by changing the arrangement density distribution of the bright and dark strips, the modulation transmittance is changed, so that the optimal high-contrast imaging is obtained. The system comprises a simulation fixed star light source, a collimating mirror, an aperture diaphragm, a pupil modulation light filter, an imaging mirror and a detector. Aiming at the application of an ultra-high contrast imaging coronagraph in the technical field of broadband imaging, the invention provides and completes the coronagraph system which is suitable for observation with the bandwidth exceeding 5% and even can cover full-band observation. The system can solve the problem that an existing coronagraph is low in light transmission efficiency.

Description

technical field [0001] The invention relates to a space wide-band ultra-high contrast imaging method and a coronagraph system used for space wide-band ultra-high contrast imaging. It involves direct imaging of extrasolar planets, detection of extrasolar terrestrial planets, detection science of extrasolar life signals, and related technical fields such as space astronomy, scientific payloads, aerospace, aviation, astronomical terminal instruments, optics, etc. A space coronagraph system and method for broadband working wavelength and ultra-high contrast imaging, in particular to a coronagraph pupil modulation technology and implementation method applied to direct imaging detection of space exoplanets. Background technique [0002] The detection and research of extrasolar planets has great scientific significance for understanding the origin and evolution of life, and understanding the status of human beings in the universe. Two astronomers at the Geneva Observatory have won...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01J3/02G02B27/64
CPCG01J3/0229G02B27/64
Inventor 窦江培陈祎力张熙王钢
Owner NANJING INST OF ASTRONOMICAL OPTICS & TECH NAT ASTRONOMICAL OBSE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com