Liquid crystal tunable wave filter and configuration method thereof

A technology for tuning filters and filters, applied in static indicators and other directions, can solve problems such as affecting the field of view and reducing transmittance, and achieve the effects of no mechanical rotation, high pass rate, and narrow half width.

Inactive Publication Date: 2010-08-11
SHENZHEN KINGWAY OPTOELECTRONICS
View PDF5 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To solve this problem, more stages are required for the Leo configuration or split element configuration, and more biref

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
  • Liquid crystal tunable wave filter and configuration method thereof
  • Liquid crystal tunable wave filter and configuration method thereof
  • Liquid crystal tunable wave filter and configuration method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0044] The configuration method of the present invention can produce a variety of different specific configuration structures, and the present invention will be specifically described in conjunction with examples below.

[0045] Corresponds to a four-stage cascade Leo configuration in the prior art (see figure 1 ), the configuration method of the present invention can generate several new specific configuration structures, we only list three specific configuration structures here (see Picture 9 , Picture 10 ,with Picture 11 ). Picture 9 The configuration shown is to combine the first two continuous Leo cascades and the last two continuous Leo cascades respectively, and four birefringent optical elements are used in each combination. Picture 10 with Picture 11 The configuration shown is to combine three consecutive Leo cascades. Seven birefringent optical elements are used in the combination. The difference is that the positions of the three consecutive cascades are different. ...

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 a liquid crystal tunable wave filter and a configuration method thereof. The wave filter comprises a plurality of stages of cascaded Leo configuration wave filter units, and each Leo configuration wave filter unit consists of polarizing sheets of both sides and birefraction optical elements in the middle, wherein parts of or all of the Leo configuration wave filter units are merged through two continuous cascades or three continuous cascades for forming a merged unit, the merging mode is an overlapped type or fan type merging mode, and the birefraction optical elements are liquid crystal tunable wave plates or fixed wave plates or the combination of the liquid crystal tunable wave plates and the fixed wave plates. The liquid crystal tunable wave filter of the invention has the advantages of high passing rate, narrow full width at half maximum, high shielding rate, adjustable light spectrum range, high stability, no need of mechanical rotation, real-time controllability and the like, and can be widely applied to various fields such as imaging, biology, medicine, materials, optics, photonics, astronomy and the like.

Description

technical field [0001] The invention relates to a tunable filter, in particular to a liquid crystal tunable filter and a configuration method thereof. Background technique [0002] There are mainly the following types of wavelength tunable filters: tunable filters based on mode coupling, tunable filters based on semiconductor laser structure, fiber Bragg gratings (FBGs), etc. [0003] Tunable filters based on mode coupling are based on various mode couplings such as acousto-optic, electro-optic or magneto-optic effects. The incident light is first processed by a single mode, such as the transverse electric (TE) mode, which is converted into another mode, such as the transverse magnetic (TM) mode, by periodic perturbation. Acoustic, electric or magnetic fields can be used to generate periodic perturbations depending on correlation effects, under which only light waves within a very narrow wavelength range satisfying the mode coupling conditions can pass through, resulting in...

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): G02F1/133
Inventor 唐守平
Owner SHENZHEN KINGWAY OPTOELECTRONICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap