EP2894946A3 - Lighting device control using variable inductor - Google Patents

Lighting device control using variable inductor Download PDF

Info

Publication number
EP2894946A3
EP2894946A3 EP15150536.9A EP15150536A EP2894946A3 EP 2894946 A3 EP2894946 A3 EP 2894946A3 EP 15150536 A EP15150536 A EP 15150536A EP 2894946 A3 EP2894946 A3 EP 2894946A3
Authority
EP
European Patent Office
Prior art keywords
variable inductor
lighting device
magnetic coil
variable
device control
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.)
Withdrawn
Application number
EP15150536.9A
Other languages
German (de)
French (fr)
Other versions
EP2894946A2 (en
Inventor
William A. Hunt
Loc Nguyen
Ammar Burayez
John W. MAatthews
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Surefire LLC
Original Assignee
Surefire LLC
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
Priority claimed from US14/578,201 external-priority patent/US20150102746A1/en
Application filed by Surefire LLC filed Critical Surefire LLC
Publication of EP2894946A2 publication Critical patent/EP2894946A2/en
Publication of EP2894946A3 publication Critical patent/EP2894946A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H05B45/305—Frequency-control circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
    • H01H13/64—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member wherein the switch has more than two electrically distinguishable positions, e.g. multi-position push-button switches
    • 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]

Abstract

Various techniques are provided for implementing a variable control for a lighting device, such as a flashlight, that uses a variable inductor. The lighting device may include a tail cap, a battery terminal, and a variable inductor mounted in the tail cap and electrically connected in series with the battery terminal. The lighting device may also include a user operable switch configured to selectively bypass the variable inductor. The variable inductor may include, for example, a magnetic coil comprising a wire coil and a core. The variable inductor may also include a ring comprised of ferrous material and having a substantially elliptical inner circumfery and surrounding the magnetic coil, wherein the ring is adapted to be rotated relative to the magnetic coil in response to user actuation of a rotatable user control.
EP15150536.9A 2014-01-10 2015-01-08 Lighting device control using variable inductor Withdrawn EP2894946A3 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201461926233P 2014-01-10 2014-01-10
US201461926785P 2014-01-13 2014-01-13
US14/578,201 US20150102746A1 (en) 2011-08-17 2014-12-19 Lighting device control using variable inductor

Publications (2)

Publication Number Publication Date
EP2894946A2 EP2894946A2 (en) 2015-07-15
EP2894946A3 true EP2894946A3 (en) 2015-10-28

Family

ID=52595030

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15150536.9A Withdrawn EP2894946A3 (en) 2014-01-10 2015-01-08 Lighting device control using variable inductor

Country Status (2)

Country Link
EP (1) EP2894946A3 (en)
CN (1) CN104879654A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6278440B1 (en) * 1997-01-30 2001-08-21 Wacom Co., Ltd. Coordinate input apparatus and position-pointing device
US20070247839A1 (en) * 2003-12-09 2007-10-25 Matthews John W Flashlight with selectable output level switching
US20100091485A1 (en) * 2008-10-09 2010-04-15 Matthews John W Switchable light sources
WO2013025548A1 (en) * 2011-08-17 2013-02-21 Surefire, Llc Lighting device control using variable inductor
WO2013025544A1 (en) * 2011-08-17 2013-02-21 Surefire, Llc Lighting device controller programming

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6278440B1 (en) * 1997-01-30 2001-08-21 Wacom Co., Ltd. Coordinate input apparatus and position-pointing device
US20070247839A1 (en) * 2003-12-09 2007-10-25 Matthews John W Flashlight with selectable output level switching
US20100091485A1 (en) * 2008-10-09 2010-04-15 Matthews John W Switchable light sources
WO2013025548A1 (en) * 2011-08-17 2013-02-21 Surefire, Llc Lighting device control using variable inductor
WO2013025544A1 (en) * 2011-08-17 2013-02-21 Surefire, Llc Lighting device controller programming

Also Published As

Publication number Publication date
EP2894946A2 (en) 2015-07-15
CN104879654A (en) 2015-09-02

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