an optical encoder
An optical encoder and encoding sequence technology, which is applied in the direction of instruments, conversion sensor output, and measuring devices, can solve the problems of slow reading speed, difficult design, and small storage capacity, and achieve simple structure, small size, and information storage. The effect of large capacity
Active Publication Date: 2018-03-30
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology
[0004] The present invention solves the technical problems of slow reading speed, small storage capacity and difficult design of barcodes in the prior art by providing an optical encoder
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[0028] In order to solve the technical problems of slow reading speed, small storage capacity and difficult design of barcodes in the prior art, the present invention provides an optical encoder, which uses metamaterials for optical encoding, and sets and encodes sequences on the dielectric layer The corresponding metal structural unit has simple structure, small size, large information storage capacity, and fast transmission and reading speed.
[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary s...
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Abstract
The invention relates to the technical field of optical fiber communication, in particular to an optical encoder. The optical encoder comprises a dielectric layer and a metal layer. The metal layer is arranged on the surface of the dielectric layer. The metal layer comprises at least one metal structure unit, wherein at least one metal structure unit enables encoding sequences obtained after encoding of encoding objects to be distributed on the dielectric layer according to a preset encoding mode and corresponds to elements in the encoding sequences in a one-to-one mode, and the metal structure units corresponding to different elements in the encoding sequences are different in transmissivity and / or reflectivity. The optical encoder utilizes a meta-material to perform optical encoding, the metal structure units corresponding to the encoding sequences are arranged on the dielectric layer, the transmissivity and / or reflectivity of the metal structure units corresponding to the different elements in the encoding sequences are different, and the optical encoder is simple in structure, small in size, large in information storage capacity and high in transmission and reading speed.
Description
technical field [0001] The invention relates to the field of optical communication, in particular to an optical encoder. Background technique [0002] Metamaterial (Metamaterial) is an artificial extraordinary electromagnetic medium, which has extraordinary electromagnetic properties that natural materials do not have. Metamaterials generally use multiple artificially designed metal structural units to obtain negative permittivity, negative magnetic permeability, and negative refractive index, and the size of these metal structural units is much smaller than the wavelength of electromagnetic waves. The performance of metamaterials is not only related to the properties of the constituent materials, but also closely related to the size of the metal structural unit and the interaction between the units. Therefore, these metal structural units are also called superatoms or supramolecules, and their application range involves stealth , imaging, sensing, polarization control, bea...
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IPC IPC(8): G01D5/347
CPCG01D5/347
Inventor 令永红孙荣黄黎蓉刘桐君
Owner HUAZHONG UNIV OF SCI & TECH