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

Optical-compensation athermalizing long-wave infrared optical system

A long-wave infrared and optical system technology, applied in optics, optical components, instruments, etc., can solve the problems of small field of view, short focal length, large volume, etc., and achieve the effect of large field of view, elimination of thermal difference, and compact structure

Inactive Publication Date: 2012-07-04
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
View PDF5 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since both the primary and secondary mirrors of the optical system are mirrors, the focal length is short, the field of view is small, and the volume is large.

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
  • Optical-compensation athermalizing long-wave infrared optical system
  • Optical-compensation athermalizing long-wave infrared optical system
  • Optical-compensation athermalizing long-wave infrared optical system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The present invention adopts the form of catadioptric optical system, the main mirror 1 adopts Mankin mirror, the material of which is germanium (Ge), an infrared crystal material, and one optical element simultaneously realizes two optical properties of refraction and reflection. Through the use of the refraction characteristics of the primary mirror 1 and the matching of the temperature characteristics of the mirror body and the supporting structure material, the thermal difference elimination of the system can be finally realized.

[0019] Such as figure 1 As shown, the optically compensated athermalized long-wave infrared optical system of the present invention is composed of a primary mirror 1 , a secondary mirror 2 and a relay mirror 3 . The primary mirror 1, the secondary mirror 2, the relay mirror 3, the detector window 7, the cold stop 8, and the cooling infrared detector image plane 9 are arranged in sequence along the main optical axis.

[0020] The optical ...

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 an optical-compensation athermalizing long-wave infrared optical system which comprises a primary mirror, a secondary mirror and a relay mirror; wherein the primary mirror is a Mangin mirror, the refracting surface of the Mangin mirror has a negative focal power, and the reflecting surface of the Mangin mirror is a concave surface, and the secondary mirror is a planar mirror; and an object target is refracted from the refracting surface of the primary mirror to the reflecting surface of the primary mirror, refracted by the refracting surface of the primary mirror for the second time and turned and reflected by the secondary mirror to irradiate on an image surface of a refrigeration type infrared detector sequentially through the relay mirror and a detector window.According to the optical-compensation athermalizing long-wave infrared optical system, as the Mangin mirror is adopted by the primary mirror, the optical system has a wide viewing field and compact structure.

Description

technical field [0001] The invention belongs to the technical field of infrared photoelectric imaging, and relates to an optical compensation athermalization long-wave infrared optical system. Background technique [0002] Infrared optical systems are used more and more widely, the working environment is more and more complex, and the imaging quality requirements of infrared optical systems are getting higher and higher. It is inevitable to design high-performance infrared optical systems that can work under harsh environmental conditions. Changes in ambient temperature will cause changes in the refractive index of materials, changes in the focal length of the system, image plane displacement (defocus), and deterioration of imaging quality. The thermal instability of this kind of optical system is especially serious for infrared optical systems, which is mainly due to the poor thermal stability of infrared optical materials, and the refractive index of most infrared optical ...

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): G02B17/08G02B13/14G02B13/18G02B1/02
Inventor 张新王灵杰
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