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

Optical system capable of generating banding diffraction-free light beams

A non-diffraction beam and optical system technology, applied in the field of optical systems, can solve problems such as high cost and complicated operation

Inactive Publication Date: 2014-12-10
HUAQIAO UNIVERSITY
View PDF7 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, to generate a strip-shaped non-diffracting beam with the characteristics of Mathieu beam, it is usually obtained by using a traditional computer or making a phase hologram, and the operation is relatively complicated and the cost is high

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 system capable of generating banding diffraction-free light beams
  • Optical system capable of generating banding diffraction-free light beams
  • Optical system capable of generating banding diffraction-free light beams

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] In order to further explain the technical solution of the system of the present invention, the system of the present invention will be described in detail below through specific examples.

[0015] A kind of optical system of the present invention produces strip-shaped non-diffraction beam, such as figure 1 As shown, there is an optical platform 1, on which a laser 2 is placed, and along the laser light path of the laser 2, a short focal length lens 3, a long focal length lens 4, an elliptical aperture film 5 and an axicon 6 are sequentially placed. Wherein, the laser 2 , the short focal length lens 3 , the long focal length lens 4 , the elliptical aperture film 5 and the axicon 6 are respectively supported and positioned on the optical table 1 by the fixed bracket 7 .

[0016] Wherein, the focal point of short focal length lens 3 coincides with the focal point of long focal length lens 4;

[0017] Wherein, laser 2 adopts He-Ne laser.

[0018] The focal point of the sh...

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 an optical system capable of generating banding diffraction-free light beams. The optical system comprises an optical platform. A laser is disposed on the optical platform, and a short-focal-length lens, a long-focal-length lens, an elliptical-aperture film and an axicon are sequentially arranged along a laser path of the laser. The focus of the short-focal-length lens is superposed with the focus of the long-focal-length lens; the elliptical-aperture film is close to the axicon; the diameter of a light beam irradiating the elliptical-aperture film from the long-focal-length lens is larger than that of a short axis of an elliptical hole of the elliptical-aperture film. The optical system is capable of conveniently generating the banding diffraction-free light beams and provides a new way for generating the banding diffraction-free light beams in low-cost, simple and effective manner. During actual use, the optical system has a special significance in improving optical nondestructive detecting and detecting efficiency in bar code scanning.

Description

technical field [0001] The invention relates to an optical system for focusing a circular Gaussian beam to generate a strip-shaped non-diffraction beam. Background technique [0002] A non-diffracting beam is a beam whose transverse light field distribution does not change with the propagation distance during free space propagation and whose light field energy is concentrated. Because of the characteristic that the intensity and spot size remain unchanged during the propagation process, it is widely used in laser drilling, optical capture and manipulation, laser imaging, interferometry, and space optical communication. The simpler way to generate a non-diffraction beam in the experiment is to use a plane wave directly incident on the axicon to obtain a non-diffraction beam. When the amplitude of the plane wave incident on the axicon is a plane wave with a uniform distribution, a non-diffraction Bessel beam is generated. When incident on the axicon When the amplitude distrib...

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): G02B27/09
Inventor 吴逢铁谢晓霞李冬
Owner HUAQIAO UNIVERSITY
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