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

Method for extending view field of infrared optical system on basis of wavefront coding

An infrared optical system and wavefront encoding technology, which is applied in the field of expanding the field of view of the infrared optical system by using the wavefront encoding imaging technology, can solve the problems of the infrared optical system's field of view being too large and the receiving area small, so as to facilitate measurement , energy distribution dispersion, the effect of expanding the field of view

Active Publication Date: 2016-12-07
HARBIN INST OF TECH
View PDF3 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in general, the receiving area of ​​the infrared detector is relatively small, so the field of view of the general infrared optical system is not too 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
  • Method for extending view field of infrared optical system on basis of wavefront coding
  • Method for extending view field of infrared optical system on basis of wavefront coding
  • Method for extending view field of infrared optical system on basis of wavefront coding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings, but it is not limited thereto. Any modification or equivalent replacement of the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention should be covered by the present invention. within the scope of protection.

[0023] The invention provides a method for expanding the field of view of an infrared optical system based on wavefront encoding, which specifically includes the following steps:

[0024] Step 1: Design a two-chip infrared optical system with a focal length of 208mm and F / # of 2 in the optical design software CodeV as the initial structure. The parameters of the infrared optical system are shown in Table 1. The structure diagram is as follows figure 2 Shown: The two lenses of the optical system are made of Ge, and the four optical surfaces are all sphe...

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 method for extending a view field of an infrared optical system on the basis of wavefront coding. The method comprises the following steps that an odd symmetric phase mask plate is additionally arranged at a diaphragm of the infrared optical system, wavefront of the infrared optical system is modulated, a coded image is formed on a detector, decoding processing is conducted on the coded image through a digital filter means, and a final sharp image is obtained. By introducing a wavefront coding technique, the larger focal depth purpose can be achieved on the condition that the luminous flux and the imaging resolution of the infrared optical system are guaranteed, and meanwhile astigmatism, spherical aberration, chromatic aberration and aberration brought by defocus caused by installation errors and temperature changes can be inhibited. According to the method, operation is easy, and the view field of the system can be extended and the image quality can be improved on the condition that the complexity of the infrared optical system is not increased.

Description

technical field [0001] The invention relates to a method for enlarging the field of view of an infrared optical system by using a computational optics method, in particular to a method for enlarging the field of view of an infrared optical system by using wavefront coding imaging technology. Background technique [0002] In recent years, with the rapid development of science and technology, especially the progress of infrared detector technology, the emergence of new materials and the increasingly perfect manufacturing process, infrared imaging systems are more and more used in military and civilian fields. The infrared optical system is an integral and important part of the infrared imaging system. It is used to collect infrared radiation from the target and the background and converge it to the photosensitive surface of the infrared detector to form an image of the target and the background. With the continuous upgrading of infrared detector devices and the continuous impr...

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): G02B27/00
CPCG02B27/0012G02B27/0025G02B27/0075
Inventor 于佳倩范志刚陈守谦陈超包春慧苗佳艺吕宁
Owner HARBIN INST OF TECH
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