Patents by Inventor Toshiaki Matsuzawa

Toshiaki Matsuzawa 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: 20190180476
    Abstract: A calibration device includes: a two-dimensional image conversion element having a plurality of pixels; and an optical system for forming an image-formation relationship between the two-dimensional image conversion element and a three-dimensional world coordinate space, the calibration device including a computer, the computer being configured to: acquire calibration data indicating a correspondence between two-dimensional pixel coordinates in the image conversion element and three-dimensional world coordinates in the world coordinate space; and calculate parameters of a camera model by fitting, to the acquired calibration data, the camera model representing two coordinate values of the two-dimensional pixel coordinates as functions of three coordinate values of the three-dimensional world coordinates, wherein the camera model represents the two coordinate values of the two-dimensional pixel coordinates by means of a linear sum of a plurality of two-dimensional vector functions having, as elements, the functi
    Type: Application
    Filed: February 4, 2019
    Publication date: June 13, 2019
    Applicant: OLYMPUS CORPORATION
    Inventor: Toshiaki MATSUZAWA
  • Publication number: 20190073795
    Abstract: Provided is a calibration device for an optical device including a two-dimensional image conversion element having a plurality of pixels and including an optical system that forms an image-forming relationship between the image conversion element and a three-dimensional world coordinate space, the calibration device including: a computer, wherein the computer is configured to: obtain calibration data representing the correspondence between two-dimensional pixel coordinates of the image conversion element and three-dimensional world coordinates of the world coordinate space; and fit a camera model representing the direction of a principal ray in the world coordinate space, corresponding to the pixel coordinates, as a function of the pixel coordinates, to the calibration data obtained, thereby calculating parameters of the camera model.
    Type: Application
    Filed: November 7, 2018
    Publication date: March 7, 2019
    Applicant: OLYMPUS CORPORATION
    Inventor: Toshiaki MATSUZAWA
  • Patent number: 10127687
    Abstract: A calibration device for an optical device including a two-dimensional image conversion element having a plurality of pixels and an optical system that forms an image-formation relationship between the image conversion element and the three-dimensional world coordinate space. The calibration device includes: a calibration-data acquisition unit that acquires calibration data representing the correspondence between two-dimensional pixel coordinates in the image conversion element and three-dimensional world coordinates in the world coordinate space; and a parameter calculating unit that calculates parameters of a camera model by applying, to the calibration data acquired by the calibration-data acquisition unit, a camera model in which two coordinate values of the three-dimensional world coordinates are expressed as functions of the other one coordinate value of the world coordinates and the two coordinate values of the two-dimensional pixel coordinates.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: November 13, 2018
    Assignee: OLYMPUS CORPORATION
    Inventor: Toshiaki Matsuzawa
  • Publication number: 20170243374
    Abstract: A calibration device for an optical device including a two-dimensional image conversion element having a plurality of pixels and an optical system that forms an image-formation relationship between the image conversion element and the three-dimensional world coordinate space. The calibration device includes: a calibration-data acquisition unit that acquires calibration data representing the correspondence between two-dimensional pixel coordinates in the image conversion element and three-dimensional world coordinates in the world coordinate space; and a parameter calculating unit that calculates parameters of a camera model by applying, to the calibration data acquired by the calibration-data acquisition unit, a camera model in which two coordinate values of the three-dimensional world coordinates are expressed as functions of the other one coordinate value of the world coordinates and the two coordinate values of the two-dimensional pixel coordinates.
    Type: Application
    Filed: May 9, 2017
    Publication date: August 24, 2017
    Applicant: OLYMPUS CORPORATION
    Inventor: Toshiaki MATSUZAWA
  • Patent number: 7761257
    Abstract: An apparatus is for evaluating optical characteristics of an optical system based on an image forming position of a point image formed through the optical system. The apparatus includes a point image producing unit that forms a point image through the optical system in each point light source; an imaging unit that images the point images to produce a point image distribution image; and a moving unit that changes relative distance between the optical system and the point light source or the imaging unit in an optical axis direction. The apparatus also performs processing of detecting an image forming position in each different relative distance of the point image based on image information of the point image distribution images, the processing including calculating a regression expression for the detected image forming positions to obtain a shape parameter of the image axis in each of the point images.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: July 20, 2010
    Assignee: Olympus Corporation
    Inventor: Toshiaki Matsuzawa
  • Patent number: 7747101
    Abstract: This lens evaluation device comprises a plurality of point light sources arranged on the plane, an imaging unit for picking up an object and obtaining its image, a movement unit for changing the relative distance between the point light source or the imaging unit and the optical system to be evaluated, a storage medium for recording stack images obtained by the imaging unit picking up the images of the plurality of point light sources via the optical system every time the movement unit changes the relative distance, an image position calculation unit for calculating a plurality of image positions from the plurality of pieces of point light source image in the stack image recorded on the storage medium and an aberration acquisition unit for fitting an aberration model function to the plurality of image positions calculated and obtaining an aberration measurement value.
    Type: Grant
    Filed: November 13, 2006
    Date of Patent: June 29, 2010
    Assignee: Olympus Corporation
    Inventors: Toshiaki Matsuzawa, Go Ryu, Yukio Eda, Terumasa Morita
  • Publication number: 20080281556
    Abstract: An apparatus is for evaluating optical characteristics of an optical system based on an image forming position of a point image formed through the optical system. The apparatus includes a point image producing unit that forms a point image through the optical system in each point light source; an imaging unit that images the point images to produce a point image distribution image; and a moving unit that changes relative distance between the optical system and the point light source or the imaging unit in an optical axis direction. The apparatus also performs processing of detecting an image forming position in each different relative distance of the point image based on image information of the point image distribution images, the processing including calculating a regression expression for the detected image forming positions to obtain a shape parameter of the image axis in each of the point images.
    Type: Application
    Filed: May 8, 2008
    Publication date: November 13, 2008
    Applicant: OLYMPUS CORPORATION
    Inventor: Toshiaki MATSUZAWA
  • Publication number: 20070115457
    Abstract: This lens evaluation device comprises a plurality of point light sources arranged on the plane, an imaging unit for picking up an object and obtaining its image, a movement unit for changing the relative distance between the point light source or the imaging unit and the optical system to be evaluated, a storage medium for recording stack images obtained by the imaging unit picking up the images of the plurality of point light sources via the optical system every time the movement unit changes the relative distance, an image position calculation unit for calculating a plurality of image positions from the plurality of pieces of point light source image in the stack image recorded on the storage medium and an aberration acquisition unit for fitting an aberration model function to the plurality of image positions calculated and obtaining an aberration measurement value.
    Type: Application
    Filed: November 13, 2006
    Publication date: May 24, 2007
    Applicant: Olympus Corporation
    Inventors: Toshiaki Matsuzawa, Go Ryu, Yukio Eda, Terumasa Morita
  • Patent number: 6229928
    Abstract: A 4-line buffer sequentially takes in image data items and temporarily stores a specific size of image data. A spatial filter in which a coefficient matrix based on the no-neighbor algorithm in a restoration process has been set performs a spatial filtering process on the image data items sequentially outputted from the 4-line buffer to produce a restored image based on the no-neighbor algorithm. This enables images to be restored in real time, which produces an image whose luminance distribution is approximate to that of the specimen.
    Type: Grant
    Filed: September 14, 1998
    Date of Patent: May 8, 2001
    Assignee: Olympus Optical Co., Ltd.
    Inventor: Toshiaki Matsuzawa
  • Patent number: 5260824
    Abstract: An atomic force microscope comprises a probe having a sharply-pointed tip end. The probe is supported on the free end portion of a cantilever and is close to the surface of a specimen. When an interatomic force is produced, the cantilever is deformed, and the probe is displaced. The displacement of the probe is detected by an optical system. A light beam emitted from a light source is collimated by a lens, and reflected by a polarized beam-splitter, and also by a half-mirror. Then, the light beam passes through a quarter wavelength plate and an objective lens, such that the light is converged on the cantilever. The reflected light beam from the cantilever returns along the same optical path and passes through the splitter. The light beam is divided into two light beams at the splitter. These two light beams are reflected by respective prisms and are then incident on respective photodetectors. These photodetectors detect the displacement of the probe.
    Type: Grant
    Filed: April 19, 1990
    Date of Patent: November 9, 1993
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Takao Okada, Shuzo Mishima, Tsugiko Takase, Hirofumi Miyamoto, Hiroko Ohta, Yasushi Satoh, Yoshimitsu Enomoto, Toshiaki Matsuzawa, Yuzo Nakamura, Hiroshi Kajimura
  • Patent number: 4098893
    Abstract: Pyridine derivatives having the formula ##STR1## wherein R.sub.1 is an alkyl group having 1 to 3 carbon atoms; R.sub.2 is hydrogen atom or an alkyl group having 1 to 3 carbon atoms; R.sub.3 is hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 3 or 4 carbon atoms, an alkyl group having 1 or 2 carbon atoms and hydroxy as a substituent, an alkanoyl group having 1 to 18 carbon atoms, an alkenoyl group having 3 to 11 carbon atoms, an aromatic acyl group having 6 or 10 carbon atoms in the aromatic ring and optionally alkyl, alkoxy, acetylamino, cyano or halogen as a substituent, a heterocyclic acyl group, an alkylcarbamoyl group having 1 to 4 carbon atoms in the alkyl moiety, an allylcarbamoyl group or hydroxy group; n is an integer of 0 to 2 inclusive; and, when n is 2, R.sub.1 's may be the same or different; provided that when R.sub.2 is said alkyl group having 1 to 3 carbon atoms, R.sub.3 is said alkyl group having 1 to 4 carbon atoms.
    Type: Grant
    Filed: July 15, 1977
    Date of Patent: July 4, 1978
    Assignee: Sankyo Company Limited
    Inventors: Yasuhiro Morisawa, Mitsuru Kataoka, Noritoshi Kitano, Toshiaki Matsuzawa
  • Patent number: 4054663
    Abstract: Pyridine derivatives having the formula ##STR1## wherein R.sub.1 is an alkyl group having 1 to 3 carbon atoms; R.sub.2 is hydrogen atom or an alkyl group having 1 to 3 carbon atoms; R.sub.3 is hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 3 or 4 carbon atoms, an alkyl group having 1 or 2 carbon atoms and hydroxy as a substituent, an alkanoyl group having 1 to 18 carbon atoms, an alkenoyl group having 3 to 11 carbon atoms, an aromatic acyl group having 6 or 10 carbon atoms in the aromatic ring and optionally alkyl, alkoxy, acetylamino, cyano or halogen as a substituent, a heterocyclic acyl group, an alkylcarbamoyl group having 1 to 4 carbon atoms in the alkyl moiety, an allylcarbamoyl group or hydroxy group; n is an integer of 0 to 2 inclusive; and, when n is 2, R.sub.1 's may be the same or different; provided that when R.sub.2 is said alkyl group having 1 to 3 carbon atoms, R.sub.3 is said alkyl group having 1 to 4 carbon atoms.
    Type: Grant
    Filed: December 11, 1975
    Date of Patent: October 18, 1977
    Assignee: Sankyo Company Limited
    Inventors: Yasuhiro Morisawa, Mitsuru Kataoka, Noritoshi Kitano, Toshiaki Matsuzawa
  • Patent number: 4053608
    Abstract: Anticoccidial compositions which comprise as active ingredient pyridine derivatives having the formula ##STR1## wherein R.sub.1 is hydrogen atom, a halomethyl group or methyl group;R.sub.2 is hydrogen atom or an alkyl group of 1-3 carbon atoms;R.sub.3 is hydrogen atom, an alkyl group of 1-3 carbon atoms, allyl group, an alkyl group having 2 or 3 carbon atoms and alkoxy of 1 or 2 carbon atoms as a substituent, an alkyl group having 1-3 carbon atoms and hydroxy as a substituent, an alkanoyl group of 1-18 carbon atoms, a haloacetyl group, an alkenoyl group of 3-11 carbon atoms, an aromatic acyl group, a heterocyclic acyl group, an N-alkylcarbamoyl group of 1-4 carbon atoms in the alkyl moiety or hydroxy group;Provided that when R.sub.2 is said alkyl group of 1-3 carbon atoms, R.sub.3 is said alkyl group of 1-3 carbon atoms and inorganic acid addition salts thereof.
    Type: Grant
    Filed: August 7, 1975
    Date of Patent: October 11, 1977
    Assignee: Sankyo Company Limited
    Inventors: Yasuhiro Morisawa, Mitsuru Kataoka, Noritoshi Kitano, Toshiaki Matsuzawa
  • Patent number: 3983238
    Abstract: An anticoccidial composition which comprises a compound of the formula ##SPC1##Intimately dispersed in an inert edible carrier, wherein R.sub.1 and R.sub.2 are each hydrogen, an aliphatic acyl group, an aromatic acyl group or a heterocyclic acyl group, and at least R.sub.1 and R.sub.2 is said heterocyclic acyl group; or a salt thereof.The composition is a preventive and curative anticoccidial agent for poultry and domestic animals. Particularly, it shows a significant activity against chronic coccidiosis caused by Eimeria acervulina.The composition is less toxic for animals, besides it has an advantage that it is also effective for coccidiosis caused by coccidia resistant to the known anticoccidial agents.
    Type: Grant
    Filed: March 12, 1975
    Date of Patent: September 28, 1976
    Assignee: Sankyo Company Limited
    Inventors: Yasuhiro Morisawa, Mitsuru Kataoka, Taiichiro Watanabe, Noritoshi Kitano, Toshiaki Matsuzawa
  • Patent number: 3949070
    Abstract: Antibiotic substance named "Pholipomycin" which is useful as a growth promoting agent for domestic animals, poultries and the like and produced by the cultivation of a new microorganism, Streptomyces lividoclavatus strain No. 3176, NRRL 8022.
    Type: Grant
    Filed: January 30, 1975
    Date of Patent: April 6, 1976
    Assignee: Sankyo Company Limited
    Inventors: Mamoru Arai, Akio Torikata, Hisayoshi Fukatsu, Noritoshi Kitano, Toshiaki Matsuzawa
  • Patent number: 3935311
    Abstract: A composition which comprises a pyridinol derivative of the formula ##SPC1##Intimately dispersed in an inert edible carrier, wherein R.sub.1 and R.sub.2 may be the same or different and each represents a hydrogen atom; a lower alkyl group, an aralkyl group, an aliphatic, an aromatic or a heterocyclic acyl group; an alkoxycarbonyl group; an aralkoxycarbonyl group; an aryloxycarbonyl group; a N-substituted carbonyl group; a N-substituted thiocarbonyl group; a phosphono group; or a salt thereof.The composition is a preventive and curative anticoccidial agent for poultry and domestic animals. Particularly, it shows a significant activity against chronic coccidiosis caused by Eimeria acervulina.The composition is less toxic for animals, besides it has an advantage that it is also effective for coccidiosis caused by coccidia resistant to the known anticoccidial agents.
    Type: Grant
    Filed: September 26, 1974
    Date of Patent: January 27, 1976
    Assignee: Sankyo Company Limited
    Inventors: Yasuhiro Morisawa, Mitsuru Kataoka, Taiichiro Watanabe, Noritoshi Kitano, Toshiaki Matsuzawa