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1. WO2020138234 - OPTICAL INFORMATION READING DEVICE

Publication Number WO/2020/138234
Publication Date 02.07.2020
International Application No. PCT/JP2019/051007
International Filing Date 25.12.2019
IPC
G06K 7/10 2006.1
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
7Methods or arrangements for sensing record carriers
10by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
G06K 7/14 2006.1
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
7Methods or arrangements for sensing record carriers
10by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
14using light without selection of wavelength, e.g. sensing reflected white light
H04N 5/225 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
222Studio circuitry; Studio devices; Studio equipment
225Television cameras
H04N 5/232 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
222Studio circuitry; Studio devices; Studio equipment
225Television cameras
232Devices for controlling television cameras, e.g. remote control
H04N 5/369 2011.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
30Transforming light or analogous information into electric information
335using solid-state image sensors
369SSIS architecture; Circuitry associated therewith
G02F 1/13 2006.1
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01for the control of the intensity, phase, polarisation or colour
13based on liquid crystals, e.g. single liquid crystal display cells
CPC
G02F 1/13
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01for the control of the intensity, phase, polarisation or colour 
13based on liquid crystals, e.g. single liquid crystal display cells
G02F 1/1337
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01for the control of the intensity, phase, polarisation or colour 
13based on liquid crystals, e.g. single liquid crystal display cells
133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
1333Constructional arrangements; ; Manufacturing methods
1337Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
G06K 7/10
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
7Methods or arrangements for sensing record carriers, ; e.g. for reading patterns;
10by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
G06K 7/14
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
7Methods or arrangements for sensing record carriers, ; e.g. for reading patterns;
10by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
14using light without selection of wavelength, e.g. sensing reflected white light
H04N 5/225
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
222Studio circuitry; Studio devices; Studio equipment ; ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, TV cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
225Television cameras ; ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, camcorders, webcams, camera modules specially adapted for being embedded in other devices, e.g. mobile phones, computers or vehicles
H04N 5/232
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
222Studio circuitry; Studio devices; Studio equipment ; ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, TV cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
225Television cameras ; ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, camcorders, webcams, camera modules specially adapted for being embedded in other devices, e.g. mobile phones, computers or vehicles
232Devices for controlling television cameras, e.g. remote control ; ; Control of cameras comprising an electronic image sensor;
Applicants
  • 株式会社デンソーウェーブ DENSO WAVE INCORPORATED [JP]/[JP]
Inventors
  • 山本 賢了 YAMAMOTO, Kenryo
  • 鴻巣 光司 KONOSU, Koji
  • 伊藤 誠 ITO, Makoto
  • 佐々木 謙太朗 SASAKI, Kentaro
Agents
  • 東田 潔 TOHDA, Kiyoshi
Priority Data
2018-24207426.12.2018JP
2019-10283631.05.2019JP
2019-22989320.12.2019JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) OPTICAL INFORMATION READING DEVICE
(FR) DISPOSITIF DE LECTURE D'INFORMATIONS OPTIQUES
(JA) 光学的情報読取装置
Abstract
(EN)
In the present invention, a first polarization unit 41 that is disposed on the emission side of an illumination unit 31 is configured such that the illumination light is polarized in a predetermined polarization direction. A second polarization unit 42 that is disposed on the light-receiving side of a light-receiving sensor 32 is configured as a switching polarization unit that is capable of switching between a polarization state in which reflected light from an information code C is polarized in a direction different from the predetermined polarization direction, and a transmission state in which the already polarized reflected light is transmitted without being polarized.
(FR)
La présente invention concerne une première unité de polarisation (41) qui est disposée du côté émission d'une unité d'éclairage (31), conçue de sorte que la lumière d'éclairage soit polarisée dans une direction de polarisation prédéfinie. Une seconde unité de polarisation (42) qui est disposée sur le côté réception de lumière d'un capteur de réception de lumière (32) est conçue en tant qu'unité de polarisation de commutation qui est capable de commuter entre un état de polarisation, dans lequel une lumière réfléchie à partir d'un code d'informations C est polarisée dans une direction différente de la direction de polarisation prédéfinie et un état de transmission, dans lequel la lumière réfléchie déjà polarisée est transmise sans être polarisée.
(JA)
照明部31の出射側に配置される第1偏光部41は、照明光が所定の偏光方向に偏光されるように構成される。そして、受光センサ32の受光側に配置される第2偏光部42は、情報コードCからの反射光が上記所定の偏光方向と異なる方向に偏光される偏光状態と既に偏光された反射光が偏光されずに通過する通過状態とのいずれかに切り替え可能な切替偏光部として構成される。
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