Broad spectrum optical imaging system of large-diameter photon sieve space telescope

An optical imaging system and space telescope technology, applied in the field of wide-spectrum optical imaging systems, can solve the problems of spherical aberration, chromatic aberration reduction, and spectral bandwidth not being well resolved, and achieve the effect of light equipment

Inactive Publication Date: 2010-06-09
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
View PDF0 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This device can achieve super large aperture, but the spectral width to achieve achromatic aberration is only 40 nanometers, indicating that the spectral bandwidth has not been well resolved, and the spherical aberration and chromatic aberration of the system also need to be further reduced

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
  • Broad spectrum optical imaging system of large-diameter photon sieve space telescope
  • Broad spectrum optical imaging system of large-diameter photon sieve space telescope
  • Broad spectrum optical imaging system of large-diameter photon sieve space telescope

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.

[0016] see first figure 2 , figure 2 It is a schematic diagram of the optical structure of the wide-spectrum optical imaging system of the large-aperture photon sieve space telescope of the present invention. It can be seen from the figure that the wide-spectrum optical imaging system of the large-aperture photon sieve space telescope of the present invention includes: a super large-aperture photon sieve 2-1 It is used to focus and image an object at infinity; a negative diffractive lens 2-2 is used to compensate the dispersion of the photon sieve; a positive lens 2-3 and a first harmonic diffractive lens 2-4 and a second harmonic diffractive lens without power 2-5 constitute a polychromatic aplanatic aberration system; a photodetector device 2-6 is used for recording an...

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 relates to a broad spectrum optical imaging system of a large-diameter photon sieve space telescope. The broad spectrum optical imaging system comprises a large-diameter photon sieve. A negative diffraction lens, a positive lens, a first harmonic diffractive and a second harmonic diffractive of lens zero focal power, and a photoelectric detector are arranged in sequence after the photon sieve along the incident direction of light. The system has the advantages of large diameter, light equipment, broad spectrum and high resolution.

Description

technical field [0001] The invention relates to an optical imaging system of a space telescope, in particular to a wide-spectrum optical imaging system of a large-aperture photon sieve space telescope. Background technique [0002] At present, space telescopes at home and abroad, in consideration of aberration balance, mostly use aspherical catadioptric structures. This type of system is too heavy, and the launch cost is extremely high. The maximum aperture can reach several meters, and the limited aperture limits the resolution. Taking the Hubble Space Telescope launched in 1990 as an example, it adopts a Cassegrain optical structure, the primary mirror is 2.4 meters in diameter, weighs 817.2 kilograms, and has a resolution of 1 arc second. With the improvement of micromachining precision, diffractive elements have been widely used in optical systems, especially the emergence of photon sieves, making it possible for super-large-aperture space telescopes. figure 1 It is a ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/18G02B23/00
Inventor 张军勇林尊琪曾夏辉曹华保杨朋千曹婧
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap