Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for Generating Rotatable Optical Focus Field Based on Radiation Field of Rotating Field Antenna

A technology of rotating field and radiation field, applied in the field of optics

Active Publication Date: 2022-06-07
QUANZHOU NORMAL UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the intensity distribution of the optical focal field in the above-mentioned existing implementation methods is static and remains unchanged near the focal point.

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 Generating Rotatable Optical Focus Field Based on Radiation Field of Rotating Field Antenna
  • Method for Generating Rotatable Optical Focus Field Based on Radiation Field of Rotating Field Antenna
  • Method for Generating Rotatable Optical Focus Field Based on Radiation Field of Rotating Field Antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] In order to make the features and advantages of this patent more obvious and easy to understand, the following specific examples are given and described in detail as follows:

[0037] In this embodiment, the schematic diagram of generating the rotating optical focal field is as follows figure 1 , figure 2 As shown, this embodiment can obtain the required incident field by means of the radiation field of the virtual rotating field antenna. The virtual rotating field antenna is composed of two coplanar dipoles that are perpendicular to each other and orthogonally fed. It acts as a broadcast transceiver antenna in the VHF and UHF bands, producing a horizontally polarized omnidirectional radiation pattern.

[0038] exist figure 1 Among them, a schematic diagram of a virtual rotating field antenna composed of two dipoles that are perpendicular to each other and have a phase difference of 90° is given.

[0039] figure 2 It is then based on a 4π focusing system, where a...

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 present invention proposes a method for generating a rotatable optical focal field based on the radiation field of a rotating field antenna, which is characterized in that it includes the following steps: Step S1: a virtual rotating field composed of two dipoles that are perpendicular to each other and have a phase difference of 90° The antenna is placed in the center of the focal plane of the 4π focusing system, so that the electromagnetic field radiated by the virtual rotating field antenna is completely converged and collimated onto the pupil plane by two relative high numerical aperture lenses; Step S2: the two relative high numerical aperture lenses The numerical aperture lens focuses two incident fields that differ by 180° onto its optical focal plane. The intensity distribution of the "8"-shaped optical focal field produced by the method of the present invention surrounds the optical axis on the focal plane at a circular frequency along with time ω rotate. The rotating optical focal field has important application value in particle rotation, particle acceleration and near-field scanning optical microscopy.

Description

technical field [0001] The invention belongs to the field of optics, and in particular relates to a method for generating a rotatable optical focal field based on the radiation field of a rotating field antenna. Background technique [0002] At present, the unique focal field generated by the tight focusing of the vector light field has attracted extensive attention due to its promising application prospects in optical capture and control, optical microscopy, and optical micromachining. [0003] A variety of existing unique optical focal field distributions, such as light needles, spherical light spots, light pipes, light chains, light bubbles, flat top focus, etc., have been reported both theoretically and experimentally. However, the intensity distribution of the optical focal field in the above-mentioned existing implementation methods is static, and remains unchanged near the focal point. SUMMARY OF THE INVENTION [0004] Aiming at the deficiencies and gaps in the pri...

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): G02F1/29
CPCG02F1/29G02F1/292G02F1/294
Inventor 余燕忠林雪华
Owner QUANZHOU NORMAL UNIV