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公开(公告)号：US10785835B2
公开(公告)日：2020-09-22
申请号：US16504181
申请日：2019-07-05
Applicant: PROFOTO AB
Inventor： Anton Falk , Michael Sundkvist
Abstract: The present disclosure relates to a flash generator for providing power supply to a flash tube so that the flash tube rapidly provides a light output adapted to FP-sync, Flat Peak. The flash generator comprises a capacitor bank, an output and a switch configured to switch a current flow from the capacitor bank via the output to provide a variable power via the output. The flash generator further comprises a controller for controlling the switch, whereby by controlling the on time of the switch, the generator is operative to provide, during a time period of 100 to 2000 μs during a peak time period within the time period, an average power at least 4 times higher than the average power provided during the other time period within the time period, whereby the flash tube during the peak time period becomes fully ignited.
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公开(公告)号：US20200008286A1
公开(公告)日：2020-01-02
申请号：US16504181
申请日：2019-07-05
Applicant: PROFOTO AB
Inventor： Anton Falk , Michael Sundkvist
Abstract: The present disclosure relates to a flash generator for providing power supply to a flash tube so that the flash tube rapidly provides a light output adapted to FP-sync, Flat Peak. The flash generator comprises a capacitor bank, an output and a switch configured to switch a current flow from the capacitor bank via the output to provide a variable power via the output. The flash generator further comprises a controller for controlling the switch, whereby by controlling the on time of the switch, the generator is operative to provide, during a time period of 100 to 2000 μs during a peak time period within the time period, an average power at least 4 times higher than the average power provided during the other time period within the time period, whereby the flash tube during the peak time period becomes fully ignited.
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公开(公告)号：US20170311428A1
公开(公告)日：2017-10-26
申请号：US15500507
申请日：2015-10-26
Applicant: PROFOTO AB
Inventor： Anton Falk , Michael Sundkvist
Abstract: The present disclosure relates to a flash generator for providing power supply to a flash tube so that the flash tube rapidly provides a light output adapted to FP-sync, Flat Peak. The flash generator comprises a capacitor bank, an output and a switch configured to switch a current flow from the capacitor bank via the output to provide a variable power via the output. The flash generator further comprises a controller for controlling the switch, whereby by controlling the on time of the switch, the generator is operative to provide, during a time period of 100 to 2000 μs during a peak time period within the time period, an average power at least 4 times higher than the average power provided during the other time period within the time period, whereby the flash tube during the peak time period becomes fully ignited.
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公开(公告)号：US10375315B2
公开(公告)日：2019-08-06
申请号：US16031991
申请日：2018-07-10
Applicant: PROFOTO AB
Inventor： Anton Falk
Abstract: The present invention generally relates to the field of communication between electronic devices used for photography. In particular, the invention relates to a method, transmission unit, system and computer program for wireless communication between a camera and at least one remote flash device, such as photoflash units and related equipment. More in particular, the invention provides a way of controlling a plurality of flash devices from an intermediate radio transmission unit mountable on the camera, and utilized a delay a sequence flash control sequence so as to synchronize the function of the camera and the remote flash devices during image acquisition. Further the invention provides a way of controlling in the photoflash units settings for the main flash, wherein the setting are the last settings determined by the camera when the intermediate radio transmission unit was in a TTL-mode.
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公开(公告)号：US10349504B2
公开(公告)日：2019-07-09
申请号：US15500507
申请日：2015-10-26
Applicant: PROFOTO AB
Inventor： Anton Falk , Michael Sundkvist
Abstract: The present disclosure relates to a flash generator for providing power supply to a flash tube so that the flash tube rapidly provides a light output adapted to FP-sync, Flat Peak. The flash generator comprises a capacitor bank, an output and a switch configured to switch a current flow from the capacitor bank via the output to provide a variable power via the output. The flash generator further comprises a controller for controlling the switch, whereby by controlling the on time of the switch, the generator is operative to provide, during a time period of 100 to 2000 μs during a peak time period within the time period, an average power at least 4 times higher than the average power provided during the other time period within the time period, whereby the flash tube during the peak time period becomes fully ignited.
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Patent Agency Ranking
公开(公告)号：US20210251057A1
公开(公告)日：2021-08-12
申请号：US17025906
申请日：2020-09-18
Applicant: PROFOTO AB
Inventor： Anton Falk , Michael Sundkvist
Abstract: The present disclosure relates to a flash generator for providing power supply to a flash tube so that the flash tube rapidly provides a light output adapted to FP-sync, Flat Peak. The flash generator comprises a capacitor bank, an output and a switch configured to switch a current flow from the capacitor bank via the output to provide a variable power via the output. The flash generator further comprises a controller for controlling the switch, whereby by controlling the on time of the switch, the generator is operative to provide, during a time period of 100 to 2000 μs during a peak time period within the time period, an average power at least 4 times higher than the average power provided during the other time period within the time period, whereby the flash tube during the peak time period becomes fully ignited.
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公开(公告)号：US10455130B2
公开(公告)日：2019-10-22
申请号：US15902959
申请日：2018-02-22
Applicant: PROFOTO AB
Inventor： Anton Falk
Abstract: The present invention generally relates to the field of communication between electronic devices used for photography. In particular, the invention relates to a method, transmission unit, system and computer program for wireless communication between a camera and at least one remote flash device, such as photoflash units and related equipment. More in particular, the invention provides a way of controlling a plurality of flash devices from an intermediate radio transmission unit mountable on the camera, and utilized a delay a sequence flash control sequence so as to synchronize the function of the camera and the remote flash devices during image acquisition.
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公开(公告)号：US10310360B2
公开(公告)日：2019-06-04
申请号：US15555240
申请日：2016-02-25
Applicant: PROFOTO AB
Inventor： Anton Falk , Ulf Carlsson , Carl Johan Grubbström
IPC: G03B15/05 , H01T1/22 , H01T1/24 , H01J11/28 , H05B41/32 , H01J61/54 , H01J61/90 , H01J1/30 , H01J61/067
Abstract: Flash tubes for photographic use, in particular, a flash tube is adapted to provide a light output adapted to FP-sync, Flat Peak. The flash tube includes a length of glass tubing enclosing a gas for use in the flash tube, a cathode inside a first end part of glass tubing and an anode inside a second end part of glass tubing. The cathode includes an element that helps to ionize the gas that is wound around the cathode, such that a spark stream starts from the upper part of the cathode and is prevented from spreading down wards on the cathode and changing the arc length during the light output adapted to FP-sync.
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公开(公告)号：US20190014251A1
公开(公告)日：2019-01-10
申请号：US16031991
申请日：2018-07-10
Applicant: PROFOTO AB
Inventor： Anton Falk
CPC classification number: H04N5/2354 , G03B15/05 , G03B2206/00 , G03B2215/0557 , H04M1/7253 , H04N5/067 , H04N5/2351
Abstract: The present invention generally relates to the field of communication between electronic devices used for photography. In particular, the invention relates to a method, transmission unit, system and computer program for wireless communication between a camera and at least one remote flash device, such as photoflash units and related equipment. More in particular, the invention provides a way of controlling a plurality of flash devices from an intermediate radio transmission unit mountable on the camera, and utilized a delay a sequence flash control sequence so as to synchronize the function of the camera and the remote flash devices during image acquisition. Further the invention provides a way of controlling in the photoflash units settings for the main flash, wherein the setting are the last settings determined by the camera when the intermediate radio transmission unit was in a TTL-mode.
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公开(公告)号：US10085092B2
公开(公告)日：2018-09-25
申请号：US15555229
申请日：2016-02-25
Applicant: PROFOTO AB
Inventor： Anton Falk , Ulf Carlsson
CPC classification number: H04R5/04 , G03B7/26 , G03B15/02 , G03B15/05 , G03B2215/0557 , H04M1/6058 , H04M1/72527 , H05B41/32
Abstract: A flash generator is capable of identifying which type of flash head and flash head extension cables that is connected to the flash generator. A flash head and flash head extension cable can be identified by the flash generator. The flash generator provides a power supply to a flash head. Further the flash generator includes a first current generator for charging the capacitor. The flash generator further includes a second current generator or a voltage generator connected to an output of the flash generator and arranged to provide a current or a voltage to create a voltage UID over a component in a flash head or a flash head extension cable connected to the flash generator. Processing means are arranged to identify the flash head or the flash head extension cable by the measured voltage UID.
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