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

Efficient polarization purifying device

A purification device and high-efficiency technology, applied in optics, instruments, nonlinear optics, etc., can solve the problems of low transmitted light energy and high cost, and achieve the effects of high polarization degree, energy enhancement, and high polarization purity

Active Publication Date: 2014-01-01
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
View PDF5 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no reflection loss when the light component vibrating parallel to the incident surface passes through the wave plate stack, while the light component vibrating perpendicular to the paper surface will produce up to 15% reflection loss, that is, the reflected light energy is not utilized, resulting in the transmitted light after passing through the wave plate stack. The energy is lower, and the number of waveplates must be increased if a high degree of polarization is to be obtained, resulting in higher cost

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
  • Efficient polarization purifying device
  • Efficient polarization purifying device
  • Efficient polarization purifying device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] figure 1 It is the main structure diagram of the high-efficiency polarization purification device. It consists of a wave plate stack 1, a quarter wave plate 2, a first mirror 3 and a second mirror 4. In the figure θ B Represents Brewster's angle, and different materials have different Brewster's angles. In this embodiment, for the 193nm band, the wave plate stack 1 uses fused silica as a material with a good transmittance to ultraviolet light, and the refractive index is 1.560321, so the Brewster angle is 57.344°. The surface normal of the wave plate stack 1 is The horizontal direction is 57.344°. For CaF 2 , MgF 2 , K9 and other UV-permeable materials or corresponding materials in other wave bands (such as ordinary quartz glass in the visible light band), the principle of this device is also applicable. Na...

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

PropertyMeasurementUnit
refractive indexaaaaaaaaaa
Login to View More

Abstract

The invention provides an efficient polarization purifying device. The efficient polarization purifying device is composed of a wave plate heap, a quarter-wave plate and a reflector, wherein the wave plate heap is arranged obliquely, an Brewster angle is formed between the surface normal of the wave plate heap and the horizontal direction, then parallel light emitted by a laser can enter the wave plate heap with the Brewster angle, S polarized light is reflected, P polarized light is transmitted, and the quarter-wave plate is placed in the direction of S reflected light to enable the reflected S polarized light to shine on the quarter-wave plate vertically and the included angle between an optical axis and the horizontal direction to be 45 degrees; the reflector is placed behind the quarter-wave plate, the S polarized light is converted into the P polarized light after passing through the quarter-wave plate and the reflector, and then the P polarized light enters the wave plate heap with the Brewster angle. According to the efficient polarization purifying device, due to the fact that the reflector which is perpendicular to the wave plate heap is placed on the edge of the direction of emergent light formed after the reflected light passes through the wave plate heap, the emergent light is right in the horizontal direction; an extremely small number of elements are used, and single-direction-line polarized light with the high polarization degree, high polarization purity and high energy utilization rate is obtained.

Description

technical field [0001] The invention relates to the technical field of polarization conversion devices, in particular to a high-efficiency polarization purification device, which is a polarization conversion device with high polarization degree, high polarization purity and high conversion efficiency. Background technique [0002] The wave plate stack is composed of a group of parallel flat glass plates superimposed together. When the surface normal of the wave plate stack and the horizontal direction form the Brewster angle, when the natural light is horizontally incident and passes through the wave plate stack, the light passing through the wave plate stack The refracted light is continuously incident and refracted in the same state. Every time it passes through the interface, a part of the component (S component) that is perpendicular to the vibration of the paper surface is reflected from the refracted light, and finally the transmitted light passing through the wave plat...

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): G02B27/28G02F1/01
Inventor 黄金苹林妩媚邢廷文范真节张海波
Owner INST OF OPTICS & ELECTRONICS - 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