NDLI: Illuminating Apparatus

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Illuminating Apparatus

Content Provider	The Lens
Abstract	An illuminating apparatus includes a first light emitter, a second light emitter which emits light including more predefined color components than light emitted by the first light emitter, and a lighting device which supplies current modulated according to a visible light communication signal, to the first light emitter. The lighting device supplies a constant current to the second light emitter, while the first light emitter is supplied with current.
Related Links	https://www.lens.org/lens/patent/010-940-530-125-859/frontpage
Language	English
Publisher Date	2019-11-19
Access Restriction	Open
Content Type	Text
Resource Type	Patent
Jurisdiction	United States of America
Date Applied	2018-05-20
Agent	Renner, Otto, Boisselle & Sklar, Llp
Applicant	Panasonic Ip Man Co Ltd
Application No.	201815984389
Claim	An illuminating apparatus, comprising: a first light emitter; a second light emitter which emits light including more red components than light emitted by the first light emitter; and a lighting device including a control circuit that obtains a visible light communication signal that causes light emitted by the illuminating apparatus to blink at a rate that is unrecognizable to human eyes and a bright and dark pattern created by the blinking light is a data transmission signal, the control circuit controls a first current supplied to the first light emitter by modulating the first current according to the visible light communication signal, the control circuit controls a second current supplied to the second light emitter by modulating the second current according to the visible light communication signal in reverse phase relative to the first current, the lighting device supplies, to the second light emitter, the second current modulated in reverse phase relative to the first current, while the first current is supplied to the first light emitter. The illuminating apparatus according to claim 1 , wherein the first light emitter emits white light having a first color temperature, and the second light emitter emits white light having a second color temperature lower than the first color temperature. The illuminating apparatus according to claim 1 , wherein the first light emitter includes a first light emitting element which emits blue light and a second light emitting element which emits green light, the second light emitter includes a third light emitting element which emits red light, and the lighting device supplies a constant current to the second light emitter while the first current is supplied to the first light emitter. The illuminating apparatus according to claim 1 , wherein the lighting device includes: a constant current power supply circuit; and a first modulation circuit and a second modulation circuit which are connected in series between output terminals of the constant current power supply circuit, wherein the first modulation circuit includes a first capacitor connected in parallel to the first modulation circuit, the second modulation circuit includes a second capacitor connected in parallel to the second modulation circuit, the first modulation circuit supplies the first current to the first light emitter, the first current being obtained by modulating, according to the visible light communication signal, current supplied from one of the constant current power supply circuit and the first capacitor, and the second modulation circuit supplies the second current to the second 10 light emitter, the second current being obtained by modulating, in reverse phase relative to the first current, current supplied from one of the constant current power supply circuit and the second capacitor. The illuminating apparatus according to claim 4 , further comprising: a casing which houses the constant current power supply circuit, the first modulation circuit, and the second modulation circuit. The illuminating apparatus according to claim 4 , further comprising: a first casing which houses the constant current power supply circuit; a second casing which houses the first modulation circuit and is different from the first casing; and a third casing which houses the second modulation circuit and is different from the first casing and the second casing. The illuminating apparatus according to claim 1 , wherein the first light emitter blinks while the first current is supplied to the first light emitter, and the second light emitter continues to emit light while the first current is supplied to the first light emitter. A signboard, comprising: the illuminating apparatus according to claim 1 , and a display panel that is illuminated by the illuminating apparatus and includes at least one of a text character and a graphic.
CPC Classification	DISPLAYING;ADVERTISING;SIGNS;LABELS OR NAME-PLATES;SEALS GRAPHICAL DATA READING ;PRESENTATION OF DATA;RECORD CARRIERS;HANDLING RECORD CARRIERS ELECTRIC HEATING;ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR;CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES; IN GENERAL Climate Change Mitigation Technologies Related To Buildings; E.G. Housing; House Appliances Or Related End-User Applications Indexing Scheme Associated With Subclasses F21k; F21l; F21s And F21v; Relating To The Form Or The Kind Of The Light Sources Or Of The Colour Of The Light Emitted Functional Features Or Details Of Lighting Devices Or Systems Thereof;Structural Combinations Of Lighting Devices With Other Articles; Not Otherwise Provided For
Examiner	Tung X Le
Extended Family	096-737-704-630-545 078-573-309-098-72X 054-679-638-489-734 010-940-530-125-859 119-525-781-236-670 120-969-499-223-019
Patent ID	10485069
Inventor/Author	Seki Keisuke Ido Shigeru Hayashi Kazuhiko
IPC	H05B44/00 F21V23/00 F21Y115/10 G06K7/14 G09F13/00 G09F13/02 G09F13/22 H05B37/02
Status	Active
Owner	Panasonic Intellectual Property Management Co. Ltd
Simple Family	096-737-704-630-545 054-679-638-489-734 078-573-309-098-72X 010-940-530-125-859 119-525-781-236-670 120-969-499-223-019
CPC (with Group)	G09F13/005 G06K7/1473 G09F13/02 H05B45/20 H05B45/38 H05B47/195 H05B45/385 Y02B20/40 G09F13/22 F21Y2115/10 F21V23/008
Issuing Authority	United States Patent and Trademark Office (USPTO)
Kind	Patent/New European patent specification (amended specification after opposition procedure)

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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