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

Telecentric imaging system with field of view of 15 degrees and three coaxial reflectors

An imaging system and mirror technology, applied in the field of space optics, can solve problems such as not being able to meet the requirements of the field of view width, and achieve the effects of less difficulty in system processing and assembly, easy system assembly, and reduced complexity

Inactive Publication Date: 2013-06-19
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the imaging system can achieve a field of view angle of 10°, it still cannot meet the requirements for the width of the field of view in some special applications. The size of resource information

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
  • Telecentric imaging system with field of view of 15 degrees and three coaxial reflectors
  • Telecentric imaging system with field of view of 15 degrees and three coaxial reflectors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The invention according to figure 2 The structure shown is implemented. Among them, the focal length of the image side is selected as f ′=-720mm, the relative aperture D / F=1 / 4, the off-axis angle of the field of view is 8°, and the curvature radius R of the apex of the primary mirror 6 reflective surface is 1 =-1846.21236mm, the curvature radius R of the vertex of the reflective surface of secondary mirror 7 2 =-566.92974mm, the vertex curvature radius R of the three mirrors and eight reflective surfaces 3 =-809mm, the distance d from the primary mirror 6 to the secondary mirror 7 1 =-404.5mm, the distance d from the secondary mirror 7 to the third mirror 8 2 =404.5mm, the distance d between the three mirrors 8 and the image plane 10 3 =-666.26761mm, the aspheric coefficient e of the primary mirror 6 reflective surface 1 2 =4.44886, e 1 4 =2.56243e-011, the aspheric coefficient e of the reflective surface of secondary mirror 7 2 2 =0, the aspheric coefficient...

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 provides a telecentric imaging system with field of view of 15 degrees and three coaxial reflectors, belongs to the space optics technical field, and relates to a telecentric off-axis three-reflector imaging system. A technical problem to be solved is providing a telecentric imaging system with field of view of 15 degrees and three coaxial reflectors. A technical scheme is as follows: the imaging system comprises a main mirror, a second mirror, a third mirror, an aperture diaphragm and an imaging surface, the main mirror, the second mirror, the third mirror and the aperture diaphragm are coaxial, and the main mirror and the third mirror are coplanar; the second mirror is placed on a reflected light path of the main mirror, the third mirror is placed on a reflected light pathof the second mirror, and the aperture diaphragm is placed on a mirror plane edge of the second mirror; in order to realize telecentric image space, a distance from the aperture diaphragm to the third mirror is half of a summit radius of curvature length of the third mirror; in order to realize wide field of view of 15 degrees, the second mirror is a convex spherical mirror, and the main mirror and the third mirror are concave quarticsurface mirrors; a distance from the second mirror to the third mirror is larger than half of a system image space focal length. According to the system, abundant ground resource information is obtained, and the system has low processing and adjusting difficulty.

Description

technical field [0001] The invention belongs to the technical field of space optics and relates to a telecentric off-axis three-mirror imaging system used for the pre-optical imaging system of a multispectral imager and an imaging spectrometer. Background technique [0002] The imaging spectrometer is an advanced optical remote sensor that organically combines the optical imaging system and the spectral spectroscopic system. And economic construction and other fields have a very wide range of applications. [0003] Both the pre-optical imaging system and the post-spectrum splitting system of the imaging spectrometer are telecentric. Compared with the transmission imaging system and reflection imaging system, it has the characteristics of simple structure, no chromatic aberration, wide spectral range, high resolution and high energy utilization. At the same time, the off-axis three-mirror system has the characteristics of no obstruction, wide field of view, good image quali...

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 Patents(China)
IPC IPC(8): G01J3/02G02B17/06G02B5/10
Inventor 刘晓梅向阳
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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