JP7271664B2 - 波長スウィープ光源 - Google Patents
波長スウィープ光源 Download PDFInfo
- Publication number
- JP7271664B2 JP7271664B2 JP2021523861A JP2021523861A JP7271664B2 JP 7271664 B2 JP7271664 B2 JP 7271664B2 JP 2021523861 A JP2021523861 A JP 2021523861A JP 2021523861 A JP2021523861 A JP 2021523861A JP 7271664 B2 JP7271664 B2 JP 7271664B2
- Authority
- JP
- Japan
- Prior art keywords
- wavelength
- pulse
- optical
- light source
- time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000835 fiber Substances 0.000 claims description 75
- 230000003287 optical effect Effects 0.000 claims description 62
- 230000003595 spectral effect Effects 0.000 claims description 41
- 239000006185 dispersion Substances 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 16
- 239000013307 optical fiber Substances 0.000 claims description 16
- 230000001427 coherent effect Effects 0.000 claims description 8
- 230000001902 propagating effect Effects 0.000 claims description 3
- 239000002609 medium Substances 0.000 description 13
- 238000013507 mapping Methods 0.000 description 5
- 238000012014 optical coherence tomography Methods 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009022 nonlinear effect Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000004611 spectroscopical analysis Methods 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 238000001069 Raman spectroscopy Methods 0.000 description 1
- 230000002547 anomalous effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
- G01J3/0218—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows using optical fibers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B9/00—Measuring instruments characterised by the use of optical techniques
- G01B9/02—Interferometers
- G01B9/0209—Low-coherence interferometers
- G01B9/02091—Tomographic interferometers, e.g. based on optical coherence
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/10—Arrangements of light sources specially adapted for spectrometry or colorimetry
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
- H01S3/0057—Temporal shaping, e.g. pulse compression, frequency chirping
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
- H01S3/0092—Nonlinear frequency conversion, e.g. second harmonic generation [SHG] or sum- or difference-frequency generation outside the laser cavity
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06754—Fibre amplifiers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
- A61B5/0062—Arrangements for scanning
- A61B5/0066—Optical coherence imaging
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06791—Fibre ring lasers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
- H01S3/1106—Mode locking
- H01S3/1112—Passive mode locking
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/1601—Solid materials characterised by an active (lasing) ion
- H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
- H01S3/1608—Solid materials characterised by an active (lasing) ion rare earth erbium
Description
本願は、2018年11月1日に出願の米国特許出願第62/754,082号の優先権を主張し、その出願は引用することにより本明細書の一部をなす。
Claims (10)
- 光源から波長掃引光出力を生成する方法であって、前記方法は、
所定の繰り返し率で一連の光入力パルスを提供するステップと、
増幅された出力パルスのそれぞれが所定のスペクトル帯域幅にわたって広がるように、ファイバベースの光増幅器内で前記一連の光入力パルスのそれぞれの光パルスを増幅および拡張するステップと、
所定の平均単位長波長分散Davgおよび所定の長さLDFを有する分散光媒体を介して、増幅およびスペクトル拡張された出力パルスのそれぞれを通過させ、(Davg*LDF)の全分散Dtotを提供するステップであって、前記分散光媒体は、伝搬するパルスのそれぞれにおいて、十分な量だけ時間伸長を行い、それぞれの時間伸長パルスの異なる波長成分を、間隔を空けた時間間隔で前記分散光媒体から出力させ、波長掃引光出力を形成するステップとを備える、方法。 - 前記所定の繰り返し率および前記所定のスペクトル帯域幅は、前記分散光媒体を出た時間伸長パルスが時間的に重ならないように、前記所定の全分散Dtotに対応するように選択される、請求項1に記載の方法。
- 前記光入力パルスは、1ps未満の継続時間を有する、請求項1に記載の方法。
- 前記光入力パルスの前記所定の繰り返し率は、2MHz未満でない、請求項1に記載の方法。
- 前記分散光媒体の前記長さは、パルス繰り返し周波数、平均波長分散Davg、およびスペクトル帯域幅の積の逆数に本質的に等しくなるように選択される、請求項1に記載の方法。
- 所定の繰り返し率を提供する光入力パルスのレーザー源と、
前記光入力パルスおよび選択された波長とパワーのポンプビームの両方に反応するドープファイバ増幅器であって、スペクトル的に広げられた領域内の所定の帯域幅において、パワースペクトル密度の最小の変動を有する前記スペクトル的に広げられた出力パルスを生成する前記ドープファイバ増幅器と、
平均単位長波長分散Davgおよび所定の長さLDFを有し、(Davg*LDF)として定義される全分散Dtotを提供し、前記分散光媒体は前記ドープファイバ増幅器からの前記増幅された出力パルスを受信するように配置され、時間伸長されたパルスの最初の波長成分から最後の波長成分までの時間間隔が、コヒーレント光入力パルスの前記所定の繰り返し率の逆数に対して最適化されるように、前記ドープファイバ増幅器からの前記出力パルスは、前記分散光媒体の出口において十分に時間伸長される、波長掃引光源。 - 前記ドープファイバ増幅器は、エルビウムドープファイバ増幅器と、少なくとも200mWのポンプパワーで略980nmの公称波長においてビームを提供するポンプ源を利用することと、を備える、請求項6に記載の波長掃引光源。
- 前記分散光媒体は分散光ファイバの一部を備える、請求項6に記載の波長掃引光源。
- 前記分散光ファイバの一部は、少なくとも75ps/nm-kmの平均絶対値波長分散|Davg|を示し、長さLDFが約7kmから約10kmの範囲にあることを示す、請求項9に記載の波長掃引光源。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201862754082P | 2018-11-01 | 2018-11-01 | |
US62/754,082 | 2018-11-01 | ||
PCT/US2019/059061 WO2020092707A2 (en) | 2018-11-01 | 2019-10-31 | Wavelength-swept light source |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2022506468A JP2022506468A (ja) | 2022-01-17 |
JP7271664B2 true JP7271664B2 (ja) | 2023-05-11 |
Family
ID=70464279
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2021523861A Active JP7271664B2 (ja) | 2018-11-01 | 2019-10-31 | 波長スウィープ光源 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20210381889A1 (ja) |
EP (1) | EP3874325A4 (ja) |
JP (1) | JP7271664B2 (ja) |
CN (1) | CN113015933A (ja) |
WO (1) | WO2020092707A2 (ja) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008002815A (ja) | 2006-06-20 | 2008-01-10 | Univ Nagoya | 波長変化パルス光発生装置およびこれを用いた光断層計測装置 |
JP2013205390A (ja) | 2012-03-29 | 2013-10-07 | Nagoya Univ | 吸収分光計測装置 |
Family Cites Families (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55155314A (en) * | 1979-05-21 | 1980-12-03 | Nippon Telegr & Teleph Corp <Ntt> | Connecting method of optical fiber and its connector |
US6018536A (en) * | 1998-11-20 | 2000-01-25 | Sarnoff Corporation | Multiple-wavelength mode-locked laser |
AU783200B2 (en) * | 1999-12-24 | 2005-10-06 | Sumitomo Electric Industries, Ltd. | Optical transmission line, method for manufacturing optical transmission line, and optical transmission system |
US7567596B2 (en) * | 2001-01-30 | 2009-07-28 | Board Of Trustees Of Michigan State University | Control system and apparatus for use with ultra-fast laser |
GB2395353B (en) * | 2002-02-18 | 2004-10-13 | Univ Southampton | Pulsed light sources |
US6775447B2 (en) * | 2002-09-20 | 2004-08-10 | Fitel Usa Corp. | All fiber low noise supercontinuum source |
US20040067066A1 (en) * | 2002-10-03 | 2004-04-08 | Innovation Core Sei, Inc. | Optical transmission system using nonlinear material |
US6967767B2 (en) * | 2003-03-18 | 2005-11-22 | Fitel Usa Corp | Swept wavelength broadband Raman pump source |
GB0401571D0 (en) * | 2004-01-24 | 2004-02-25 | Fianium Ltd | Apparatus and method for the delivery of high-energy ultra-short optical pulses from a fibre amplifier |
US7590156B1 (en) * | 2004-05-17 | 2009-09-15 | University Of Central Florida Research Foundation, Inc. | High intensity MHz mode-locked laser |
US20070237191A1 (en) * | 2006-01-30 | 2007-10-11 | Kafka James D | Devices for high power, high-repetition rate, broadly tunable coherent radiation, and its applications |
WO2008105833A2 (en) * | 2006-09-18 | 2008-09-04 | Cornell Research Foundation, Inc. | All-normal-dispersion femtosecond fiber laser |
US8705047B2 (en) * | 2007-01-19 | 2014-04-22 | Thorlabs, Inc. | Optical coherence tomography imaging system and method |
JP5495506B2 (ja) * | 2008-05-13 | 2014-05-21 | キヤノン株式会社 | レーザ装置および光断層画像撮像装置 |
EP2321766B1 (en) * | 2008-07-24 | 2015-02-25 | The Regents of The University of California | Apparatus and method for dispersive fourier-transform imaging |
US8730568B2 (en) * | 2010-09-13 | 2014-05-20 | Calmar Optcom, Inc. | Generating laser pulses based on chirped pulse amplification |
CN103329016A (zh) * | 2011-01-27 | 2013-09-25 | Imra美国公司 | 用于高峰值功率光脉冲的光纤传输的方法和系统 |
US8618966B2 (en) * | 2011-02-22 | 2013-12-31 | Nucript LLC | Photonic assisted analog-to-digital conversion using phase detection |
US9075243B2 (en) * | 2011-03-01 | 2015-07-07 | Ofs Fitel, Llc | Method and system for ultrashort pulse fiber delivery using higher order mode fiber |
JP5833762B2 (ja) * | 2011-09-26 | 2015-12-16 | バーフェリヒト ゲゼルシャフト ミット ベシュレンクテル ハフツング | 光干渉断層撮影の技術 |
WO2014205007A1 (en) * | 2013-06-17 | 2014-12-24 | Invenio Imaging Inc. | Methods and systems for coherent raman scattering |
US9404800B2 (en) * | 2013-10-11 | 2016-08-02 | The University Of Hong Kong | Wavelength-encoded tomography |
US9680285B2 (en) * | 2014-02-13 | 2017-06-13 | Spectronix Corporation | Laser light-source apparatus and laser pulse light generating method |
FR3031246B1 (fr) * | 2014-12-29 | 2018-02-09 | Universite de Bordeaux | Systeme et procede de generation d'impulsions lumineuses ultrabreves a forte densite spectrale de puissance et accordables en longueur d'onde |
US10211587B2 (en) * | 2015-03-31 | 2019-02-19 | Versitech Limited | Spatial chirped cavity for temporally stretching/compressing optical pulses |
DE102016105568A1 (de) * | 2016-03-24 | 2017-09-28 | Trumpf Laser Gmbh | Ultrakurzpuls-Faservorverstärkersystem für Großkernfasern |
CN109313344B (zh) * | 2016-06-01 | 2021-08-24 | 香港大学 | 艾里光束光学扫频源 |
-
2019
- 2019-10-31 EP EP19877801.1A patent/EP3874325A4/en active Pending
- 2019-10-31 CN CN201980072491.1A patent/CN113015933A/zh active Pending
- 2019-10-31 WO PCT/US2019/059061 patent/WO2020092707A2/en unknown
- 2019-10-31 JP JP2021523861A patent/JP7271664B2/ja active Active
- 2019-10-31 US US17/289,146 patent/US20210381889A1/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008002815A (ja) | 2006-06-20 | 2008-01-10 | Univ Nagoya | 波長変化パルス光発生装置およびこれを用いた光断層計測装置 |
JP2013205390A (ja) | 2012-03-29 | 2013-10-07 | Nagoya Univ | 吸収分光計測装置 |
Also Published As
Publication number | Publication date |
---|---|
WO2020092707A9 (en) | 2020-06-25 |
JP2022506468A (ja) | 2022-01-17 |
EP3874325A2 (en) | 2021-09-08 |
WO2020092707A3 (en) | 2020-07-30 |
US20210381889A1 (en) | 2021-12-09 |
EP3874325A4 (en) | 2022-07-27 |
CN113015933A (zh) | 2021-06-22 |
WO2020092707A2 (en) | 2020-05-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9759983B2 (en) | Frequency comb source with large comb spacing | |
JP6701259B2 (ja) | 光学測定システム及び方法 | |
EP1004157B1 (en) | Wavelength-swept laser and method for its operation | |
US9219344B2 (en) | Generating ultrashort laser pulses based on two-stage pulse processing | |
US10615566B2 (en) | Mode-locked and wavelength tunable optical frequency comb generation through dynamic control of microresonators | |
US20190082962A1 (en) | System, apparatus and method for utilizing optical dispersion for fourier-domain optical coherence tomography | |
DE112004002187T5 (de) | Gepulste Laserquellen | |
EP2945012A1 (en) | Laser device | |
US6901087B1 (en) | Broadband laser source | |
Burgoyne et al. | Programmable lasers: design and applications | |
CN110476307B (zh) | 啁啾脉冲放大激光器系统 | |
US20040052276A1 (en) | Multiple wavelength pulased source | |
Ames et al. | Excess noise generation during spectral broadening in a microstructured fiber | |
US7376302B2 (en) | Broadband optical spectrum generating apparatus and pulsed light generating apparatus | |
JP7271664B2 (ja) | 波長スウィープ光源 | |
EP2101161A1 (en) | Bandwidth-independent method and setup for measuring and stabilizing the carrier-envelope phase drift of laser pulses | |
CN112255858A (zh) | 一种波长大范围调谐的窄线宽超短脉冲产生装置和方法 | |
JPH0212227A (ja) | 光パルス発生装置 | |
CN112997113B (zh) | 基于光纤的超连续谱光源 | |
JP7275069B2 (ja) | 光学測定システム及び方法 | |
JP2005241732A (ja) | 光パルス増幅装置 | |
CN117121312A (zh) | 检测激光脉冲的脉冲持续时间波动的系统以及产生激光脉冲的方法 | |
JPH05196974A (ja) | 短光パルス光源および光パルス幅制御装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20210824 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20220622 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20220705 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20230131 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20230322 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20230330 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20230426 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 7271664 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |