Patents by Inventor Hirokazu Takenaka

Hirokazu Takenaka 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: 20200029025
    Abstract: An imaging system includes a plurality of imaging bodies, a moving part, and an imaging control unit. Each of the imaging bodies includes a first optical element that images a range containing a hemisphere that is centered at an optical axis and oriented in a first direction of the optical axis, and a second optical element that images a range containing a hemisphere that is centered at the optical axis and oriented in a second direction opposite to the first direction. The imaging bodies is arranged in a direction orthogonal to the optical axis. The moving part moves the imaging bodies on a straight line. The imaging control unit is configured to cause the imaging bodies to perform imaging in synchronization with each other, and acquire a taken image from each of the imaging bodies.
    Type: Application
    Filed: March 16, 2018
    Publication date: January 23, 2020
    Inventors: Soichiro YOKOTA, Hirokazu TAKENAKA, Tamon SADASUE, Keita KATAGIRI
  • Publication number: 20200007763
    Abstract: An image processing apparatus detecting a plurality of joint positions between a plurality of input images includes a target image generation unit configured to generate a plurality of target images to be searched in a second input image among the input images from a first input image among the input images; a characteristic amount calculation unit configured to calculate a characteristic amount for each of the target images generated by the target image generation unit; and a joint position determination unit configured to determine the joint position for a target image of interest among the target images having the characteristic amounts calculated by the characteristic amount calculation unit depending on the characteristic amount.
    Type: Application
    Filed: July 19, 2019
    Publication date: January 2, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Hirokazu TAKENAKA, Kazuhiro YOSHIDA, Keiichi KAWAGUCHI
  • Publication number: 20190394447
    Abstract: An imaging apparatus includes a plurality of imaging bodies and an imaging control unit. Each of the imaging bodies includes a first optical element capable of imaging a range including a hemisphere that is centered at an optical axis and oriented in a first direction of the optical axis, and a second optical element capable of imaging a range including a hemisphere that is centered at the optical axis and oriented in a second direction opposite to the first direction. The imaging bodies are arrayed in a direction perpendicular to the optical axis. The imaging control unit causes the plurality of imaging bodies to perform imaging in a synchronous manner, and acquires a captured image from each of the imaging bodies.
    Type: Application
    Filed: January 31, 2018
    Publication date: December 26, 2019
    Inventors: Soichiro YOKOTA, Hirokazu TAKENAKA, Tamon SADASUE
  • Publication number: 20190306423
    Abstract: An imaging system includes an imaging body having an optical system and an imaging element, a power supplier configured to supply power to the imaging element, and a housing configured to hold the imaging body and the power supplier, wherein the optical system includes at least one optical element projecting from the housing, and a distance AP between a gravity center A of a portion including the optical system and a gravity center P of the entire imaging system and a distance BP between a gravity center B of the power supplier and the gravity center P of the entire imaging system satisfy the following condition.
    Type: Application
    Filed: June 12, 2019
    Publication date: October 3, 2019
    Applicant: Ricoh Company, Ltd.
    Inventors: Kensuke Masuda, Noriyuki Terao, Yoshiaki Irino, Tomonori Tanaka, Nozomi Imae, Toru Harada, Hirokazu Takenaka, Hideaki Yamamoto, Satoshi Sawaguchi, Daisuke Bessho, Hiroyuki Satoh, Makoto Shohara
  • Patent number: 10412302
    Abstract: An image processing apparatus detecting a plurality of joint positions between a plurality of input images includes a target image generation unit configured to generate a plurality of target images to be searched in a second input image among the input images from a first input image among the input images; a characteristic amount calculation unit configured to calculate a characteristic amount for each of the target images generated by the target image generation unit; and a joint position determination unit configured to determine the joint position for a target image of interest among the target images having the characteristic amounts calculated by the characteristic amount calculation unit depending on the characteristic amount.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: September 10, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Hirokazu Takenaka, Kazuhiro Yoshida, Keiichi Kawaguchi
  • Patent number: 10382681
    Abstract: An imaging system includes an imaging body having an optical system and an imaging element, a power supplier configured to supply power to the imaging element, and a housing configured to hold the imaging body and the power supplier, wherein the optical system includes at least one optical element projecting from the housing, and a distance AP between a gravity center A of a portion including the optical system and a gravity center P of the entire imaging system and a distance BP between a gravity center B of the power supplier and the gravity center P of the entire imaging system satisfy the following condition.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: August 13, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Kensuke Masuda, Noriyuki Terao, Yoshiaki Irino, Tomonori Tanaka, Nozomi Imae, Toru Harada, Hirokazu Takenaka, Hideaki Yamamoto, Satoshi Sawaguchi, Daisuke Bessho, Hiroyuki Satoh, Makoto Shohara
  • Publication number: 20190243110
    Abstract: An imaging device includes two imaging optical systems each of the imaging optical systems including a wide-angle lens having an angle of view wider than 180 degrees, and an imaging sensor configured to image an image by the wide-angle lens, so as to obtain an image in a solid angle of 4? radian by synthesizing the images by the respective imaging optical systems, wherein the wide-angle lens of each of the imaging optical systems includes, in order from an object side to an image side, a front group having a negative power, a reflection surface and a back group having a positive power, and is configured to bend an optical axis of the front group by the reflection surface at 90 degrees toward the back group.
    Type: Application
    Filed: April 15, 2019
    Publication date: August 8, 2019
    Applicant: Ricoh Company, Ltd.
    Inventors: Kensuke MASUDA, Noriyuki TERAO, Yoshiaki IRINO, Tomonori TANAKA, Nozomi IMAE, Toru HARADA, Hirokazu TAKENAKA, Hideaki YAMAMOTO, Satoshi SAWAGUCHI, Daisuke BESSHO, Hiroyuki SATOH, Makoto SHOHARA
  • Patent number: 10295797
    Abstract: An imaging device includes two imaging optical systems each of the imaging optical systems including a wide-angle lens having an angle of view wider than 180 degrees, and an imaging sensor configured to image an image by the wide-angle lens, so as to obtain an image in a solid angle of 4? radian by synthesizing the images by the respective imaging optical systems, wherein the wide-angle lens of each of the imaging optical systems includes, in order from an object side to an image side, a front group having a negative power, a reflection surface and a back group having a positive power, and is configured to bend an optical axis of the front group by the reflection surface at 90 degrees toward the back group.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: May 21, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Kensuke Masuda, Noriyuki Terao, Yoshiaki Irino, Tomonori Tanaka, Nozomi Imae, Toru Harada, Hirokazu Takenaka, Hideaki Yamamoto, Satoshi Sawaguchi, Daisuke Bessho, Hiroyuki Satoh, Makoto Shohara
  • Publication number: 20190086649
    Abstract: An image capture system including two imaging systems of the same structure each having a wide-angle lens, which includes a front group, a reflection surface, and a rear group arranged in order from an object side, has a field angle larger than 180 degrees, and bends an optical axis of the front group toward the rear group by the reflection surface, and an imaging sensor, obtains an image in a solid angle of 4? radian by combining images imaged by the imaging systems. Each of the two wide-angle lenses includes the reflection surface between the front group and the rear group, the reflection surfaces are made to be common to the two imaging systems. This reduces an interval between lenses nearest to the object side in the front groups of the two wide-angle lenses, thereby reducing a distance between maximum field angles of the two wide-angle lenses.
    Type: Application
    Filed: November 16, 2018
    Publication date: March 21, 2019
    Inventors: Hiroyuki SATOH, Noriyuki TERAO, Yoshiaki IRINO, Tomonori TANAKA, Nozomi IMAE, Toru HARADA, Hirokazu TAKENAKA, Hideaki YAMAMOTO, Kensuke MASUDA, Satoshi SAWAGUCHI, Daisuke BESSHO, Makoto SHOHARA, Yoichi ITO, Shusaku TAKASU
  • Publication number: 20190054674
    Abstract: A front panel for on-board liquid crystal displays has a high hardness resin composition (B) on at least one side of a layer containing a resin (A) having a polycarbonate resin (a1). The front panel satisfies the following conditions (i) to (iv): (i) the thickness of the layer containing a high hardness resin composition (B) is 10 to 250 ?m, and the total thickness of the layer containing a resin (A) comprising a polycarbonate resin (a1) and the layer containing a high hardness resin composition (B) is 100 to 3,000 ?m; (ii) the high hardness resin composition (B) consists of any one of specific resin compositions (B1) to (B3); (iii) the retardation of the front panel is 3,000 nm or more; and (iv) the standard deviation of the second derivative of the irregular shape of the hard coat layer having irregularities is 0.1 or more.
    Type: Application
    Filed: March 2, 2017
    Publication date: February 21, 2019
    Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Hirokazu TAKENAKA, Yasuo OOSE, Takuya GOTO
  • Patent number: 10192185
    Abstract: A farmland management system includes an information detection unit configured to acquire information relating to a crop being cultivated, a storage unit configured to store crop registration information for estimating a growth condition of the crop, a growth estimation unit configured to refer to the crop registration information and estimate the growth condition of the crop based on the information relating to the crop and the crop registration information, and a display unit configured to display the growth condition estimated by the growth estimation unit.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: January 29, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Yasuhiro Tomii, Shohei Matsumura, Takashi Noguchi, Kensuke Masuda, Kohji Oshikiri, Takeshi Denda, Hirokazu Takenaka, Yuji Yamanaka
  • Patent number: 10151905
    Abstract: An image capture system including two imaging systems of the same structure each having a wide-angle lens, which includes a front group, a reflection surface, and a rear group arranged in order from an object side, has a field angle larger than 180 degrees, and bends an optical axis of the front group toward the rear group by the reflection surface, and an imaging sensor, obtains an image in a solid angle of 4? radian by combining images imaged by the imaging systems. Each of the two wide-angle lenses includes the reflection surface between the front group and the rear group, the reflection surfaces are made to be common to the two imaging systems. This reduces an interval between lenses nearest to the object side in the front groups of the two wide-angle lenses, thereby reducing a distance between maximum field angles of the two wide-angle lenses.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: December 11, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventors: Hiroyuki Satoh, Noriyuki Terao, Yoshiaki Irino, Tomonori Tanaka, Nozomi Imae, Toru Harada, Hirokazu Takenaka, Hideaki Yamamoto, Kensuke Masuda, Satoshi Sawaguchi, Daisuke Bessho, Makoto Shohara, Yoichi Ito, Shusaku Takasu
  • Publication number: 20180332221
    Abstract: An image processing apparatus detecting a plurality of joint positions between a plurality of input images includes a target image generation unit configured to generate a plurality of target images to be searched in a second input image among the input images from a first input image among the input images; a characteristic amount calculation unit configured to calculate a characteristic amount for each of the target images generated by the target image generation unit; and a joint position determination unit configured to determine the joint position for a target image of interest among the target images having the characteristic amounts calculated by the characteristic amount calculation unit depending on the characteristic amount.
    Type: Application
    Filed: July 20, 2018
    Publication date: November 15, 2018
    Inventors: Hirokazu TAKENAKA, Kazuhiro YOSHIDA, Keiichi KAWAGUCHI
  • Patent number: 10063774
    Abstract: An image processing apparatus detecting a plurality of joint positions between a plurality of input images includes a target image generation unit configured to generate a plurality of target images to be searched in a second input image among the input images from a first input image among the input images; a characteristic amount calculation unit configured to calculate a characteristic amount for each of the target images generated by the target image generation unit; and a joint position determination unit configured to determine the joint position for a target image of interest among the target images having the characteristic amounts calculated by the characteristic amount calculation unit depending on the characteristic amount.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: August 28, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Hirokazu Takenaka, Kazuhiro Yoshida, Keiichi Kawaguchi
  • Publication number: 20180213152
    Abstract: An imaging system includes an imaging body having an optical system and an imaging element, a power supplier configured to supply power to the imaging element, and a housing configured to hold the imaging body and the power supplier, wherein the optical system includes at least one optical element projecting from the housing, and a distance AP between a gravity center A of a portion including the optical system and a gravity center P of the entire imaging system and a distance BP between a gravity center B of the power supplier and the gravity center P of the entire imaging system satisfy the following condition.
    Type: Application
    Filed: March 26, 2018
    Publication date: July 26, 2018
    Inventors: Kensuke Masuda, Noriyuki Terao, Yoshiaki Irino, Tomonori Tanaka, Nozomi Imae, Toru Harada, Hirokazu Takenaka, Hideaki Yamamoto, Satoshi Sawaguchi, Daisuke Bessho, Hiroyuki Satoh, Makoto Shohara
  • Patent number: 9992414
    Abstract: An imaging system includes an imaging body having an optical system and an imaging element, a power supplier configured to supply power to the imaging element, and a housing configured to hold the imaging body and the power supplier, wherein the optical system includes at least one optical element projecting from the housing, and a distance AP between a gravity center A of a portion including the optical system and a gravity center P of the entire imaging system and a distance BP between a gravity center B of the power supplier and the gravity center P of the entire imaging system satisfy the following condition.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: June 5, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventors: Kensuke Masuda, Noriyuki Terao, Yoshiaki Irino, Tomonori Tanaka, Nozomi Imae, Toru Harada, Hirokazu Takenaka, Hideaki Yamamoto, Satoshi Sawaguchi, Daisuke Bessho, Hiroyuki Satoh, Makoto Shohara
  • Publication number: 20180024333
    Abstract: An image capture system including two imaging systems of the same structure each having a wide-angle lens, which includes a front group, a reflection surface, and a rear group arranged in order from an object side, has a field angle larger than 180 degrees, and bends an optical axis of the front group toward the rear group by the reflection surface, and an imaging sensor, obtains an image in a solid angle of 4? radian by combining images imaged by the imaging systems. Each of the two wide-angle lenses includes the reflection surface between the front group and the rear group, the reflection surfaces are made to be common to the two imaging systems. This reduces an interval between lenses nearest to the object side in the front groups of the two wide-angle lenses, thereby reducing a distance between maximum field angles of the two wide-angle lenses.
    Type: Application
    Filed: September 26, 2017
    Publication date: January 25, 2018
    Applicant: RICOH COMPANY, LTD.
    Inventors: Hiroyuki SATOH, Noriyuki TERAO, Yoshiaki IRINO, Tomonori TANAKA, Nozomi IMAE, Toru HARADA, Hirokazu TAKENAKA, Hideaki YAMAMOTO, Kensuke MASUDA, Satoshi SAWAGUCHI, Daisuke BESSHO, Makoto SHOHARA, Yoichi ITO, Shusaku TAKASU
  • Publication number: 20170315336
    Abstract: An imaging device includes two imaging optical systems each of the imaging optical systems including a wide-angle lens having an angle of view wider than 180 degrees, and an imaging sensor configured to image an image by the wide-angle lens, so as to obtain an image in a solid angle of 4 ? radian by synthesizing the images by the respective imaging optical systems, wherein the wide-angle lens of each of the imaging optical systems includes, in order from an object side to an image side, a front group having a negative power, a reflection surface and a back group having a positive power, and is configured to bend an optical axis of the front group by the reflection surface at 90 degrees toward the back group.
    Type: Application
    Filed: July 14, 2017
    Publication date: November 2, 2017
    Inventors: Kensuke MASUDA, Noriyuki TERAO, Yoshiaki IRINO, Tomonori TANAKA, Nozomi IMAE, Toru HARADA, Hirokazu TAKENAKA, Hideaki YAMAMOTO, Satoshi SAWAGUCHI, Daisuke BESSHO, Hiroyuki SATOH, Makoto SHOHARA
  • Publication number: 20170310895
    Abstract: An imaging system includes an imaging body having an optical system and an imaging element, a power supplier configured to supply power to the imaging element, and a housing configured to hold the imaging body and the power supplier, wherein the optical system includes at least one optical element projecting from the housing, and a distance AP between a gravity center A of a portion including the optical system and a gravity center P of the entire imaging system and a distance BP between a gravity center B of the power supplier and the gravity center P of the entire imaging system satisfy the following condition.
    Type: Application
    Filed: July 13, 2017
    Publication date: October 26, 2017
    Inventors: Kensuke MASUDA, Noriyuki TERAO, Yoshiaki IRINO, Tomonori TANAKA, Nozomi IMAE, Toru HARADA, Hirokazu TAKENAKA, Hideaki YAMAMOTO, Satoshi SAWAGUCHI, Daisuke BESSHO, Hiroyuki SATOH, Makoto SHOHARA
  • Patent number: 9798117
    Abstract: An image capture system including two imaging systems of the same structure each having a wide-angle lens, which includes a front group, a reflection surface, and a rear group arranged in order from an object side, has a field angle larger than 180 degrees, and bends an optical axis of the front group toward the rear group by the reflection surface, and an imaging sensor, obtains an image in a solid angle of 4? radian by combining images imaged by the imaging systems. Each of the two wide-angle lenses includes the reflection surface between the front group and the rear group, the reflection surfaces are made to be common to the two imaging systems. This reduces an interval between lenses nearest to the object side in the front groups of the two wide-angle lenses, thereby reducing a distance between maximum field angles of the two wide-angle lenses.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: October 24, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Hiroyuki Satoh, Noriyuki Terao, Yoshiaki Irino, Tomonori Tanaka, Nozomi Imae, Toru Harada, Hirokazu Takenaka, Hideaki Yamamoto, Kensuke Masuda, Satoshi Sawaguchi, Daisuke Bessho, Makoto Shohara, Yoichi Ito, Shusaku Takasu