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

Polarization element and manufacturing method thereof

A polarizing element and carbon nanotube film technology, applied in optical elements, polarizing elements, optics, etc., can solve the problems of the polarizing element losing the polarization effect, the humidity requirement of the polarizing element, and the inability to uniformly polarize and absorb electromagnetic waves. Effect of range, uniform polarization absorption performance

Active Publication Date: 2013-04-10
TSINGHUA UNIV +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, this type of polarizing element also has high requirements on humidity. Once the working environment is harsh and the humidity is high, the polarizing element will lose its polarizing effect
[0005] In addition, the existing polarizing elements generally only have good polarization performance for electromagnetic waves of a certain wavelength band (such as microwave, infrared light, visible light, ultraviolet light, etc.), and cannot have uniform polarization absorption characteristics for electromagnetic waves of various wavelengths.

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
  • Polarization element and manufacturing method thereof
  • Polarization element and manufacturing method thereof
  • Polarization element and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] See figure 2 The preparation method of the polarizing element 10 of the embodiment of the present invention mainly includes the following steps:

[0027] Step 1: Provide a carbon nanotube array. Preferably, the array is a super-in-line carbon nanotube array.

[0028] In this embodiment, the preparation method of the super in-line carbon nanotube array adopts the chemical vapor deposition method, and the specific steps include: (a) providing a flat substrate. The substrate can be a P-type or N-type silicon substrate, or a silicon substrate formed with The silicon substrate of the oxide layer is preferably a 4-inch silicon substrate in this embodiment; (b) a catalyst layer is uniformly formed on the surface of the substrate, and the catalyst layer material can be iron (Fe), cobalt (Co), nickel (Ni) Or one of the alloys of any combination thereof; (c) annealing the substrate with the catalyst layer formed in the air at 700-900°C for about 30 minutes to 90 minutes; (d) placing ...

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
widthaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to an optical polarization element and a manufacturing method thereof. The polarization element comprises a supporting body and a polarization film supported by the supporting body, wherein, the polarization film comprises at least a carbon nano-tube film. Carbon nano-tubes in the at least one carbon nano-tube film are preferentially and equally oriented-arranged along a same direction. The invention also relates to a manufacturing method of the polarization element. The method comprises the following steps of: providing a supporting body; providing at least one layer of carbon nano-tube film, wherein the carbon nano-tubes in the carbon nano-tube film are preferentially oriented-arranged along a same direction; and adhering and fixing the carbon nano-tube films on the supporting body to form the polarization element. As the carbon nano-tube has a high-temperature thermal stability and has a uniform polarization absorbing characteristic to electromagnetic waves with various wavelengths, the polarization element disclosed in the invention has uniform polarization absorbing property to the electromagnetic waves with various wavelengths and has a wide application range.

Description

[0001] This case is a divisional application filed by the applicant on March 30, 2007, with the application number 200710073765.8, titled "Polarizing Element and Its Preparation Method". Technical field [0002] The invention relates to an optical device and a preparation method thereof, in particular to a polarizing element and a preparation method thereof. Background technique [0003] Polarizing element is an important optical device, which is widely used in sunglasses and liquid crystal displays. A polarizing element widely used today can absorb light in one polarization state, and light in the other polarization state passes through the polarization element. Such a polarizing element is usually made by a method: dissolving or absorbing dichroic molecules in a polymer substance, such as polyvinyl alcohol, and stretching the resulting film in one direction to arrange the dichroic molecules. At this time, the dichroic molecules are regularly arranged along the stretching direct...

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): G02B5/30G02B1/10
Inventor 冯辰姜开利刘亮张晓波范守善
Owner TSINGHUA UNIV
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