Patents by Inventor Chikuni Kawakami

Chikuni Kawakami has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20190253684
    Abstract: An electronic camera having an electronic flash including a plurality of light emitting diodes (LEDs) that emit different wavelength light is disclosed. Electric energy is supplied to a capacitor to the LEDs. A system controller controls light emitting amounts of the LEDs so that a color temperature of the electronic flash light becomes a color temperature that has been manually set with a color temperature setting switch or a color temperature of a light source determined by color temperature sensors.
    Type: Application
    Filed: April 29, 2019
    Publication date: August 15, 2019
    Applicant: FUJIFILM Corporation
    Inventor: Chikuni KAWAKAMI
  • Patent number: 10326970
    Abstract: An electronic camera having an electronic flash including a plurality of light emitting diodes (LEDs) that emit different wavelength light is disclosed. Electric energy is supplied to a capacitor to the LEDs. A system controller controls light emitting amounts of the LEDs so that a color temperature of the electronic flash light becomes a color temperature that has been manually set with a color temperature setting switch or a color temperature of a light source determined by color temperature sensors.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: June 18, 2019
    Assignee: FUJIFILM Corporation
    Inventor: Chikuni Kawakami
  • Publication number: 20190182463
    Abstract: An electronic camera having an electronic flash including a plurality of light emitting diodes (LEDs) that emit different wavelength light is disclosed. Electric energy is supplied to a capacitor to the LEDs. A system controller controls light emitting amounts of the LEDs so that a color temperature of the electronic flash light becomes a color temperature that has been manually set with a color temperature setting switch or a color temperature of a light source determined by color temperature sensors.
    Type: Application
    Filed: February 14, 2019
    Publication date: June 13, 2019
    Applicant: FUJIFILM Corporation
    Inventor: Chikuni KAWAKAMI
  • Patent number: 10250863
    Abstract: An electronic camera having an electronic flash including a plurality of light emitting diodes (LEDs) that emit different wavelength light is disclosed. Electric energy is supplied to a capacitor to the LEDs. A system controller controls light emitting amounts of the LEDs so that a color temperature of the electronic flash light becomes a color temperature that has been manually set with a color temperature setting switch or a color temperature of a light source determined by color temperature sensors.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: April 2, 2019
    Assignee: FUJIFILM Corporation
    Inventor: Chikuni Kawakami
  • Publication number: 20170041583
    Abstract: An electronic camera having an electronic flash including a plurality of light emitting diodes (LEDs) that emit different wavelength light is disclosed. Electric energy is supplied to a capacitor to the LEDs. A system controller controls light emitting amounts of the LEDs so that a color temperature of the electronic flash light becomes a color temperature that has been manually set with a color temperature setting switch or a color temperature of a light source determined by color temperature sensors.
    Type: Application
    Filed: October 17, 2016
    Publication date: February 9, 2017
    Applicant: FUJIFILM CORPORATION
    Inventor: Chikuni KAWAKAMI
  • Patent number: 9479751
    Abstract: An electronic camera having an electronic flash including a plurality of light emitting diodes (LEDs) that emit different wavelength light is disclosed. Electric energy is supplied to a capacitor to the LEDs. A system controller controls light emitting amounts of the LEDs so that a color temperature of the electronic flash light becomes a color temperature that has been manually set with a color temperature setting switch or a color temperature of a light source determined by color temperature sensors.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: October 25, 2016
    Assignee: FUJIFILM Corporation
    Inventor: Chikuni Kawakami
  • Publication number: 20140139702
    Abstract: An electronic camera having an electronic flash including a plurality of light emitting diodes (LEDs) that emit different wavelength light is disclosed. Electric energy is supplied to a capacitor to the LEDs. A system controller controls light emitting amounts of the LEDs so that a color temperature of the electronic flash light becomes a color temperature that has been manually set with a color temperature setting switch or a color temperature of a light source determined by color temperature sensors.
    Type: Application
    Filed: January 27, 2014
    Publication date: May 22, 2014
    Applicant: FUJIFILM CORPORATION
    Inventor: Chikuni KAWAKAMI
  • Patent number: 8675124
    Abstract: R, G and B LEDs are used as a light source of an electronic flash. Electric energy is supplied to a capacitor to the LEDs. A system controller controls light emitting amounts of the LEDs so that a color temperature of the electronic flash light becomes a color temperature that has been manually set with a color temperature setting switch or a color temperature of a light source determined by color temperature sensors.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: March 18, 2014
    Assignee: Fujifilm Corporation
    Inventor: Chikuni Kawakami
  • Patent number: 8634021
    Abstract: R, G and B LEDs are used as a light source of an electronic flash. Electric energy is supplied to a capacitor to the LEDs. A system controller controls light emitting amounts of the LEDs so that a color temperature of the electronic flash light becomes a color temperature that has been manually set with a color temperature setting switch or a color temperature of a light source determined by color temperature sensors.
    Type: Grant
    Filed: July 7, 2006
    Date of Patent: January 21, 2014
    Assignee: Fujifilm Corporation
    Inventor: Chikuni Kawakami
  • Patent number: 8421910
    Abstract: R, G and B LEDs are used as a light source of an electronic flash. Electric energy is supplied to a capacitor to the LEDs. A system controller controls light emitting amounts of the LEDs so that a color temperature of the electronic flash light becomes a color temperature that has been manually set with a color temperature setting switch or a color temperature of a light source determined by color temperature sensors.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: April 16, 2013
    Assignee: FUJIFILM Corporation
    Inventor: Chikuni Kawakami
  • Patent number: 7769289
    Abstract: A camera which continuously performs shooting at predetermined time intervals in conjunction with one shutter release operation, comprises: a strobe light source which emits strobe light whose color temperature is adjustable; a light emission control device which controls the strobe light source to emit the strobe light in synchronization with each shooting in the continuous shooting; and a color temperature adjustment device which adjusts the color temperature of the strobe light emitted from the strobe light source for each shooting in the continuous shooting to vary color temperature with each shooting within a predetermined color temperature variable range which has been previously set. Thereby, even in a situation where the strobe light emission at a right color temperature is difficult, it is possible to perform the shooting with the strobe light emission at the color temperature intended by the shooter.
    Type: Grant
    Filed: January 14, 2008
    Date of Patent: August 3, 2010
    Assignee: FUJIFILM Corporation
    Inventor: Chikuni Kawakami
  • Patent number: 7742098
    Abstract: In a digital camera including an electronic flash device using a light-emitting diode as a flash light source, white balance correction is performed by using a white balance correction value corresponding to a color temperature of light actually emitted from the electronic flash device.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: June 22, 2010
    Assignee: Fujifilm Corporation
    Inventor: Chikuni Kawakami
  • Patent number: 7734168
    Abstract: A lighting apparatus comprising: a reflecting surface for reflecting light, formed on a circuit board; an LED light source for emitting illumination light with a light-emitting diode, mounted on a part of said reflecting surface; and a reflector for reflecting ahead the light emitted from said LED light source, mounted on said circuit board so as to surround said LED light source and have the opened rear thereof closed by said reflecting surface.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: June 8, 2010
    Assignee: Fujifilm Corporation
    Inventor: Chikuni Kawakami
  • Patent number: 7683967
    Abstract: In a digital camera including an electronic flash device using a light-emitting diode as a flash light source, white balance correction is performed by using a white balance correction value corresponding to a color temperature of light actually emitted from the electronic flash device.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: March 23, 2010
    Assignee: Fujifilm Corporation
    Inventor: Chikuni Kawakami
  • Patent number: 7683966
    Abstract: In a digital camera including an electronic flash device using a light-emitting diode as a flash light source, white balance correction is performed by using a white balance correction value corresponding to a color temperature of light actually emitted from the electronic flash device.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: March 23, 2010
    Assignee: Fujifilm Corporation
    Inventor: Chikuni Kawakami
  • Patent number: 7486333
    Abstract: It is an object of the present invention to provide a battery remaining amount warning apparatus capable of using battery power efficiently to the full and allowing the user to select its mode according to the remaining amount of the battery. The A/D converter always measures a voltage value of the battery and when the voltage value of the battery falls below a specified level due to consumption, etc., of the battery, the A/D converter applies a pulse signal to the dummy-load circuit and measures the voltage of the battery when the pulse signal is applied and the A/D converter detects a voltage drop of the battery. When a voltage drop of the battery is detected, the data LCD displays warnings about supply voltage drops corresponding to various modes such as a recording mode, playback mode, flash charge image pickup mode, etc., of the digital camera simultaneously.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: February 3, 2009
    Assignee: FUJIFILM Corporation
    Inventor: Chikuni Kawakami
  • Publication number: 20080175579
    Abstract: A camera which continuously performs shooting at predetermined time intervals in conjunction with one shutter release operation, comprises: a strobe light source which emits strobe light whose color temperature is adjustable; a light emission control device which controls the strobe light source to emit the strobe light in synchronization with each shooting in the continuous shooting; and a color temperature adjustment device which adjusts the color temperature of the strobe light emitted from the strobe light source for each shooting in the continuous shooting to vary color temperature with each shooting within a predetermined color temperature variable range which has been previously set. Thereby, even in a situation where the strobe light emission at a right color temperature is difficult, it is possible to perform the shooting with the strobe light emission at the color temperature intended by the shooter.
    Type: Application
    Filed: January 14, 2008
    Publication date: July 24, 2008
    Applicant: FUJIFILM Corporation
    Inventor: Chikuni KAWAKAMI
  • Publication number: 20080136960
    Abstract: R, G and B LEDs are used as a light source of an electronic flash. Electric energy is supplied to a capacitor to the LEDs. A system controller controls light emitting amounts of the LEDs so that a color temperature of the electronic flash light becomes a color temperature that has been manually set with a color temperature setting switch or a color temperature of a light source determined by color temperature sensors.
    Type: Application
    Filed: October 31, 2007
    Publication date: June 12, 2008
    Inventor: Chikuni Kawakami
  • Patent number: 7372499
    Abstract: The present invention is directed to a light emitting head for use with an electronic camera. The light emitting head is preferably formed as an array of red, green, and blue light emitting diodes (LEDs) provided on the sides of a light guide member, preferably a polygonal prism. A reflecting mirror is arranged on the bottom of the prism, and reflecting elements are provided on the sides of the prism that are not in contact with the LEDs such that, in operation, light from the LEDs is emitted through the top of the prism and prevented from leaking through the sides. A diffusion plate is provided on the emission surface, and the number of green LEDs is larger than the number of red and blue LEDs to produce a white light. In other embodiments, the light guide member is a cylinder or formed entirely as a diffusion plate.
    Type: Grant
    Filed: November 22, 2004
    Date of Patent: May 13, 2008
    Assignee: Fujifilm Corporation
    Inventor: Chikuni Kawakami
  • Publication number: 20080074551
    Abstract: R, G and B LEDs are used as a light source of an electronic flash. Electric energy is supplied to a capacitor to the LEDs. A system controller controls light emitting amounts of the LEDs so that a color temperature of the electronic flash light becomes a color temperature that has been manually set with a color temperature setting switch or a color temperature of a light source determined by color temperature sensors.
    Type: Application
    Filed: October 31, 2007
    Publication date: March 27, 2008
    Inventor: Chikuni Kawakami