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

Thin-film alignment layer provided with integrally-formed spacing structures and forming an intermediate layer for an optical article comprising liquid crystals

A spacer structure and optical product technology, applied in optics, nonlinear optics, instruments, etc., can solve problems such as film thickness, uneven thickness of liquid crystal layer, etc., and achieve the effect of easy use and easy manufacture

Inactive Publication Date: 2017-12-01
ESSILOR INT CIE GEN DOPTIQUE +1
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Again, there is a risk of non-uniform thickness of the liquid crystal layer depending on the polarization
[0017] The second disadvantage is due to the rather thick film as it is made of two polymer films
This is even more problematic when a voltage is applied between the two electrodes of the double cell; thus as the membrane becomes thicker the applied voltage must be stronger

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
  • Thin-film alignment layer provided with integrally-formed spacing structures and forming an intermediate layer for an optical article comprising liquid crystals
  • Thin-film alignment layer provided with integrally-formed spacing structures and forming an intermediate layer for an optical article comprising liquid crystals
  • Thin-film alignment layer provided with integrally-formed spacing structures and forming an intermediate layer for an optical article comprising liquid crystals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0055] The spatial phase modulator according to the invention forms a liquid crystal double cell. Such a spatial phase modulator according to the invention is an optical article.

[0056] The spatial phase modulator according to the present invention comprises a thin film 1; 2; 3; 4; 5 forming an intermediate layer in the spatial phase modulator, and sandwiching Liquid crystal against the electrodes.

[0057] More precisely, the liquid crystal fills the space defined between the film 1; 2; 3; 4; 5 and two layer stacks, each layer stack comprising electrodes and located at one side of this film 1; 2; 3; 4; 5 side or the other.

[0058] exist figure 1 Above, we have shown such a spatial phase modulator 1000.

[0059] In this spatial phase modulator 1000 , each layer stack on each side of the thin film 2 comprises an alignment layer 1400 , an electrode 1300 and a substrate 1200 starting from said thin film 2 .

[0060] The alignment layer 1400, the electrode 1300, and the subs...

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
glass transition temperatureaaaaaaaaaa
depthaaaaaaaaaa
refractive indexaaaaaaaaaa
Login to View More

Abstract

The invention relates to a thin film (2) forming an intermediate layer for an optical article comprising liquid crystals (1100), comprising a main body (20) limited by a first main surface (21) and by a second main surface (22) opposed to the first main surface, said first and second main surfaces both comprising a first zone (211, 221) exhibiting alignment properties for aligning liquid crystals along a predetermined alignment direction and a second zone (212; 222) forming spacing structures (23) extending from the main surfaces, wherein the spacing structures are formed integrally with the layer having alignment properties.

Description

technical field [0001] The present invention relates to the field of optical articles comprising liquid crystals, in particular polarization-independent optical articles comprising liquid crystals. [0002] More precisely, the present invention relates to a film forming an interlayer for optical articles containing liquid crystals. [0003] The invention also relates to a method for producing such a film. [0004] The invention has particularly interesting application in spatial phase modulators comprising such films for forming polarization-independent liquid crystal double cells. Background technique [0005] Spatial phase modulators are known in the art as devices capable of modulating the phase of an optical wavefront. Polarization independence is achieved when the obtained modulation does not depend on the polarization of the input light source impinging on the spatial phase modulator at normal incidence. [0006] A polarization-independent spatial phase modulator ca...

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): G02F1/1339G02F1/1337G02F1/1347
CPCG02F1/13378G02F1/13394G02F1/13471G02F1/133711G02F2203/12G02F2203/50G02F1/1337G02F1/13473
Inventor M·弗拉德G·托提希尔
Owner ESSILOR INT CIE GEN DOPTIQUE
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