WO2015004440A3 - Dawn simulator - Google Patents

Dawn simulator Download PDF

Info

Publication number
WO2015004440A3
WO2015004440A3 PCT/GB2014/052075 GB2014052075W WO2015004440A3 WO 2015004440 A3 WO2015004440 A3 WO 2015004440A3 GB 2014052075 W GB2014052075 W GB 2014052075W WO 2015004440 A3 WO2015004440 A3 WO 2015004440A3
Authority
WO
WIPO (PCT)
Prior art keywords
duty cycle
iteration
amplitude
brightness
led
Prior art date
Application number
PCT/GB2014/052075
Other languages
French (fr)
Other versions
WO2015004440A2 (en
Inventor
Douglas Fernie
Dalibor KRSMANOVIC
Original Assignee
Outside In (Cambridge) Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Outside In (Cambridge) Ltd filed Critical Outside In (Cambridge) Ltd
Publication of WO2015004440A2 publication Critical patent/WO2015004440A2/en
Publication of WO2015004440A3 publication Critical patent/WO2015004440A3/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N5/0613—Apparatus adapted for a specific treatment
    • A61N5/0618—Psychological treatment
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light
    • H05B45/24—Controlling the colour of the light using electrical feedback from LEDs or from LED modules
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/32—Pulse-control circuits
    • H05B45/325—Pulse-width modulation [PWM]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/16—Controlling the light source by timing means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00017—Electrical control of surgical instruments
    • A61B2017/00137—Details of operation mode
    • A61B2017/00154—Details of operation mode pulsed
    • A61B2017/00181—Means for setting or varying the pulse energy
    • A61B2017/00185—Means for setting or varying the pulse height
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00017—Electrical control of surgical instruments
    • A61B2017/00137—Details of operation mode
    • A61B2017/00154—Details of operation mode pulsed
    • A61B2017/00194—Means for setting or varying the repetition rate
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/30—Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
    • A61B2090/309—Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure using white LEDs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M21/00—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis
    • A61M2021/0005—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis by the use of a particular sense, or stimulus
    • A61M2021/0044—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis by the use of a particular sense, or stimulus by the sight sense
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M21/00—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/05—General characteristics of the apparatus combined with other kinds of therapy
    • A61M2205/051—General characteristics of the apparatus combined with other kinds of therapy with radiation therapy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/58—Means for facilitating use, e.g. by people with impaired vision
    • A61M2205/583—Means for facilitating use, e.g. by people with impaired vision by visual feedback
    • A61M2205/584—Means for facilitating use, e.g. by people with impaired vision by visual feedback having a color code
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/32—Pulse-control circuits
    • H05B45/33—Pulse-amplitude modulation [PAM]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

Embodiments generally relate to methods for gradually brightening or dimming the brightness of one or more light emitting diodes, in particular methods of dawn simulation, methods of dusk simulation, dawn simulators, dusk simulators and light therapy devices, and methods of providing a substantially continuous brightness sweep of an LED(s). An example method of dawn simulation using at least one light emitting diode (LED) comprises a plurality of iterations of pulse width modulating a drive signal to an LED, an initial one of the iterations to increase brightness of the LED from zero and followed by at least one further said iteration, wherein each of the iterations comprises: increasing duty cycle of the drive signal from a start duty cycle to an end duty cycle, wherein the start duty cycle and a start amplitude of the drive signal provide a start brightness of the iteration and the end duty cycle and an end amplitude of the drive signal provide an end, higher brightness of the iteration, wherein the start amplitude of a said further iteration is higher than the start amplitude of an immediately preceding one of the iterations, and a product of the start duty cycle and the start amplitude of the further iteration is equal to a product of the end duty cycle and the end amplitude of the immediately preceding iteration.
PCT/GB2014/052075 2013-07-08 2014-07-08 Dawn simulator WO2015004440A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB1312177.7A GB201312177D0 (en) 2013-07-08 2013-07-08 Dawn simulator
GB1312177.7 2013-07-08

Publications (2)

Publication Number Publication Date
WO2015004440A2 WO2015004440A2 (en) 2015-01-15
WO2015004440A3 true WO2015004440A3 (en) 2015-04-02

Family

ID=49033456

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2014/052075 WO2015004440A2 (en) 2013-07-08 2014-07-08 Dawn simulator

Country Status (2)

Country Link
GB (1) GB201312177D0 (en)
WO (1) WO2015004440A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10021751B2 (en) 2015-12-16 2018-07-10 Black Tank Llc Lighting system and method for PWM adjustable current control
CN109640464B (en) * 2019-02-27 2020-10-02 上海客益电子有限公司 PWM signal duty ratio control method, corresponding circuit and LED lamp
CN113840418A (en) * 2021-11-16 2021-12-24 全鼎电子(苏州)有限公司 Wake-up phototherapy unit with segmented lighting
FR3133574B1 (en) * 2022-03-18 2024-03-01 Valeo Vision Synchronized LED image projection device

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6987787B1 (en) * 2004-06-28 2006-01-17 Rockwell Collins LED brightness control system for a wide-range of luminance control
WO2006087723A2 (en) * 2005-02-18 2006-08-24 Mata Temed Ltd. Apparatus and method for providing a multi-stage light treatment
EP1808199A2 (en) * 2006-01-11 2007-07-18 Outside In (Cambridge) Limited Phototherapy lights for chronobiological purposes
US20090105558A1 (en) * 2007-10-16 2009-04-23 Oakland University Portable autonomous multi-sensory intervention device
WO2009090596A1 (en) * 2008-01-17 2009-07-23 Koninklijke Philips Electronics N.V. Lighting device
US20100103091A1 (en) * 2008-10-29 2010-04-29 Advanced Optoelectronic Technology Inc. Light emitting diode array, driving system thereof and liquid crystal display using the same
WO2010128845A2 (en) * 2009-05-04 2010-11-11 Eldolab Holding B.V. Control unit for a led assembly and lighting system
WO2013042020A1 (en) * 2011-09-19 2013-03-28 Koninklijke Philips Electronics N.V. Led driver

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6987787B1 (en) * 2004-06-28 2006-01-17 Rockwell Collins LED brightness control system for a wide-range of luminance control
WO2006087723A2 (en) * 2005-02-18 2006-08-24 Mata Temed Ltd. Apparatus and method for providing a multi-stage light treatment
EP1808199A2 (en) * 2006-01-11 2007-07-18 Outside In (Cambridge) Limited Phototherapy lights for chronobiological purposes
US20090105558A1 (en) * 2007-10-16 2009-04-23 Oakland University Portable autonomous multi-sensory intervention device
WO2009090596A1 (en) * 2008-01-17 2009-07-23 Koninklijke Philips Electronics N.V. Lighting device
US20100103091A1 (en) * 2008-10-29 2010-04-29 Advanced Optoelectronic Technology Inc. Light emitting diode array, driving system thereof and liquid crystal display using the same
WO2010128845A2 (en) * 2009-05-04 2010-11-11 Eldolab Holding B.V. Control unit for a led assembly and lighting system
WO2013042020A1 (en) * 2011-09-19 2013-03-28 Koninklijke Philips Electronics N.V. Led driver

Also Published As

Publication number Publication date
WO2015004440A2 (en) 2015-01-15
GB201312177D0 (en) 2013-08-21

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