Patents by Inventor Yoji Okazaki

Yoji Okazaki 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).

  • Patent number: 7077972
    Abstract: A method of creating a micro-channel in a substrate surface by exposing a resist film with a laser beam, removing the exposed resist film per the predetermined pattern, and etching the substrate using the predetermined pattern to form the micro-channel.
    Type: Grant
    Filed: April 13, 2005
    Date of Patent: July 18, 2006
    Assignees: Fuji Photo Film Co., Ltd., Fujinon Corporation
    Inventors: Hiromi Ishikawa, Kazuhiko Nagano, Yoji Okazaki, Takeshi Fujii, Hiromitsu Yamakawa
  • Patent number: 7079169
    Abstract: In an exposure apparatus of the invention, for a spatial light modulator, each of a plurality of pixel portions fewer than the total number of the pixel portions is controlled with a control signal generated according to exposure information. Namely, a part of the pixel portions is controlled without controlling a whole of the pixel portions on the substrate. Thus, the number of pixels in the pixel portions is decreased, and transfer time of the control signal becomes short. This enables modulation speed of the laser beam to be increased and the high-speed exposure to be performed. An incorporated laser light source, in which the laser beams are incorporated and struck on the optical fiber, is preferable to the laser device. By adopting the incorporated laser light source, high brightness and high output can be obtained, and it is preferable to the exposure of the spatial light modulator. Since the fiber array is obtained with few optical fibers, it is low cost.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: July 18, 2006
    Assignees: Fuji Photo Film Co., Ltd., Fujinon Corporation
    Inventors: Hiromi Ishikawa, Kazuhiko Nagano, Yoji Okazaki, Takeshi Fujii, Hiromitsu Yamakawa
  • Patent number: 7068690
    Abstract: In a laser-light source: submounts each being made of a material having a thermal expansion coefficient of 3.5 to 6.0×10?6/° C. and having a thickness of 200 to 400 micrometers are separately formed on a heat-dissipation block made of copper or copper alloy; a single-cavity nitride-based semiconductor laser chips are respectively mounted junction-side-down on the corresponding submounts; an optical condenser system collects laser beams emitted from the semiconductor laser chips, and couples the collected laser beams to a multimode optical fiber. A bonding surface of each semiconductor laser chip is bonded to a bonding surface of a corresponding submount through a metalization layer and an Au—Sn eutectic solder layer each of which is divided into areas.
    Type: Grant
    Filed: July 10, 2003
    Date of Patent: June 27, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yoji Okazaki, Kazuhiko Nagano, Teruhiko Kuramachi
  • Patent number: 7068414
    Abstract: A reduction in utilization efficiency of laser beams emitted from laser emission portions of illumination means is limited and an exposure surface is exposed by beam spots with desired spot diameters and spot forms. At an exposure head, first microlenses are arranged in a two dimensional manner so as to correspond to micromirrors at a DMD, and apertures are arranged in a two dimensional manner at back side focusing positions of the first microlenses. With this exposure head, light source images, which are formed to be very small at back side focusing positions of the first microlenses by the first microlenses, are projected onto the exposure surface, and these light source images serve as beam spots BS and expose the exposure surface.
    Type: Grant
    Filed: June 9, 2003
    Date of Patent: June 27, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroshi Sunagawa, Hiromi Ishikawa, Yoji Okazaki, Kazuhiko Nagano, Takeshi Fujii, Toshihiko Omori
  • Patent number: 7061517
    Abstract: In the present invention provides, in order to obtain a desired focal depth t in a range ? of an acceptable increased amount of beam diameter, an exposure head is designed so that the ratio D/W of an output beam width D to a beam width W at the position where a DMD is placed satisfies the following relational formula. D W ? ? × M 2 × t - K × ? a ? In the above formula, parameters are defined as follows.
    Type: Grant
    Filed: May 9, 2005
    Date of Patent: June 13, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiromi Ishikawa, Yoji Okazaki, Kazuhiko Nagano
  • Patent number: 7062311
    Abstract: A fluorescence observing apparatus including a light source for emitting excitation light, an excitation light irradiation section for irradiating the excitation light to a sample, and a fluorescence measurement section for measuring fluorescence emitted from the sample by the irradiation of the excitation light. In the fluorescence observing apparatus, a GaN semiconductor laser is employed as the light source.
    Type: Grant
    Filed: July 6, 2000
    Date of Patent: June 13, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tomonari Sendai, Katsumi Hayashi, Kazuo Hakamata, Toshiro Hayakawa, Yoji Okazaki, Kenji Matsumoto
  • Publication number: 20060119831
    Abstract: An exposure method that can conduct digital exposure with high precision and with a high light-use efficiency using evanescent light. Light that is modulated by a DMD and condensed by a microlens array is incident at corresponding optical fiber cores arranged in a matrix in an evanescent array head, and is guided through the insides of the optical fibers. Because the light condensed by the microlens array is incident at the optical fiber cores corresponding to the microlenses, the light can be efficiently incident. Evanescent light leaks out from micro-openings formed in emission-side end portions of the optical fibers, and a photosensitive material is exposed by this evanescent light.
    Type: Application
    Filed: January 12, 2006
    Publication date: June 8, 2006
    Inventor: Yoji Okazaki
  • Patent number: 7048528
    Abstract: In an exposure apparatus of the invention, for a spatial light modulator, each of a plurality of pixel portions fewer than the total number of the pixel portions is controlled with a control signal generated according to exposure information. Namely, a part of the pixel portions is controlled without controlling a whole of the pixel portions on the substrate. Thus, the number of pixels in the pixel portions is decreased, and transfer time of the control signal becomes short. This enables modulation speed of the laser beam to be increased and the high-speed exposure to be performed. An incorporated laser light source, in which the laser beams are incorporated and struck on the optical fiber, is preferable to the laser device. By adopting the incorporated laser light source, high brightness and high output can be obtained, and it is preferable to the exposure of the spatial light modulator. Since the fiber array is obtained with few optical fibers, it is low cost.
    Type: Grant
    Filed: April 13, 2005
    Date of Patent: May 23, 2006
    Assignees: Fuji Photo Film Co., Ltd., Fuji Photo Optical Co., Ltd.
    Inventors: Hiromi Ishikawa, Kazuhiko Nagano, Yoji Okazaki, Takeshi Fujii, Hiromitsu Yamakawa
  • Patent number: 7017377
    Abstract: A washing machine includes an electric motor developing torque used for wash, rinse and dehydration operations, a current detector detecting current flowing into the motor, and a torque controller performing a vector control for the motor on the basis of the current detected by the current detector so that the torque developed by the motor is optimum for at least each of the wash and dehydration operations.
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: March 28, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tsuyoshi Hosoito, Toshimasa Tanaka, Yoji Okazaki, Michiaki Ito, Shinichiro Kawabata, Kazunobu Nagai, Futoshi Isono
  • Patent number: 7016018
    Abstract: The invention provides an exposure device that can conduct digital exposure with high precision and with a high light-use efficiency using evanescent light. Light that is modulated by a DMD and condensed by a microlens array is incident at corresponding optical fiber cores arranged in a matrix in an evanescent array head, and is guided through the insides of the optical fibers. Because the light condensed by the microlens array is incident at the optical fiber cores corresponding to the microlenses, the light can be efficiently incident. Evanescent light leaks out from micro-openings formed in emission-side end portions of the optical fibers, and a photosensitive material is exposed by this evanescent light.
    Type: Grant
    Filed: June 3, 2004
    Date of Patent: March 21, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Yoji Okazaki
  • Patent number: 7015488
    Abstract: In an exposure apparatus of the invention, for a spatial light modulator, each of a plurality of pixel portions fewer than the total number of the pixel portions is controlled with a control signal generated according to exposure information. Namely, a part of the pixel portions is controlled without controlling a whole of the pixel portions on the substrate. Thus, the number of pixels in the pixel portions is decreased, and transfer time of the control signal becomes short. This enables modulation speed of the laser beam to be increased and the high-speed exposure to be performed. An incorporated laser light source, in which the laser beams are incorporated and struck on the optical fiber, is preferable to the laser device. By adopting the incorporated laser light source, high brightness and high output can be obtained, and it is preferable to the exposure of the spatial light modulator. Since the fiber array is obtained with few optical fibers, it is low cost.
    Type: Grant
    Filed: April 13, 2005
    Date of Patent: March 21, 2006
    Assignees: Fuji Photo Film Co., Ltd., Fuji Photo Optical Co., Ltd.
    Inventors: Hiromi Ishikawa, Kazuhiko Nagano, Yoji Okazaki, Takeshi Fujii, Hiromitsu Yamakawa
  • Patent number: 7014986
    Abstract: A writing device is provided which, in simple processes, can write in two dimensions and three dimensions, and which can form highly accurate patterns. An exposure head, a conductive material discharging head, and an insulating material discharging head are disposed at one scanning stage. At the one scanning stage, a pattern can be formed on a printed board which is on the scanning stage. As a result, processes can be simplified, time between patternings can be shortened, and pattern formation can be made to be faster. Moreover, positional offset of the exposure head and the discharging heads with respect to the printed board does not arise. Thus, it is easy to increase a density of a pattern, and a highly accurate pattern is formed.
    Type: Grant
    Filed: June 6, 2003
    Date of Patent: March 21, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Mitsuru Sawano, Yoji Okazaki, Kazuhiko Nagano, Hiromi Ishikawa, Takeshi Fujii
  • Publication number: 20060044541
    Abstract: The invention provides an exposure device that can conduct digital exposure with high precision and with a high light-use efficiency using evanescent light. Light that is modulated by a DMD and condensed by a microlens array is incident at corresponding optical fiber cores arranged in a matrix in an evanescent array head, and is guided through the insides of the optical fibers. Because the light condensed by the microlens array is incident at the optical fiber cores corresponding to the microlenses, the light can be efficiently incident. Evanescent light leaks out from micro-openings formed in emission-side end portions of the optical fibers, and a photosensitive material is exposed by this evanescent light.
    Type: Application
    Filed: October 28, 2005
    Publication date: March 2, 2006
    Inventor: Yoji Okazaki
  • Patent number: 7006887
    Abstract: The present invention provides an optical modeling method capable of inhibiting distortion in an object to be modeled and modeling with higher precision. A square exposure region is divided into a plurality of pixels which are further divided into first and second pixel sub-groups, the first pixel sub-group is exposed such that neighboring pixels or more are not exposed at one time, and then unexposed pixels incorporated in the second pixel sub-group are exposed two neighboring pixels or more are not exposed at one time. A photo-curable resin is exposed twice, and then cured in an amount of one photo-curable resin layer. Accordingly, the neighboring pixels are not exposed at one time, the producing of curing shrinkage is limited within one pixel, and distortion due to the curing shrinkage does not spread to the pixels neighboring the one pixel, whereby distortion in the object to be modeled can be inhibited significantly, and modeling with higher precision is made possible.
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: February 28, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kazuhiko Nagano, Yoji Okazaki
  • Patent number: 6995912
    Abstract: A condensing lens is integrally formed with collimator-lens portions which respectively collimate light beams and a condensing lens portion which makes the collimated light beams converge at a common point. In addition, an optically-multiplexed-laser-light source is constituted by semiconductor lasers, a multimode optical fiber, and the above condensing lens, where the collimator-lens portions in the condensing lens are respectively arranged in correspondence with the semiconductor lasers, and the condensing lens portion couples the light beams collimated by the collimator-lens portions, to the multimode optical fiber.
    Type: Grant
    Filed: May 23, 2003
    Date of Patent: February 7, 2006
    Assignees: Fuji Photo Film Co., Ltd., Fujinon Corporation
    Inventors: Yoji Okazaki, Kazuhiko Nagano, Hiromitsu Yamakawa
  • Publication number: 20060021392
    Abstract: A washing machine includes an electric motor generating a driving force for wash, rinse and dehydration operations, a current detector detecting electric current flowing into the motor, a torque control unit performing a vector control for the motor on the basis of the current detected by the current detector so that torque developed by the motor is rendered optimum for at least the wash and dehydration operations, a speed control unit controlling a rotational speed of the motor, based on the current detected by the current detector, and a laundry amount determining unit determining an amount of laundry in a rotating tub, based on a magnitude of torque current in a period when a rotational speed of the motor varies.
    Type: Application
    Filed: June 26, 2003
    Publication date: February 2, 2006
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Tsuyoshi Hosoito, Yoji Okazaki
  • Publication number: 20050281506
    Abstract: An optical fiber of a bundled fiber light source is an optical fiber whose core diameter is uniform but whose emission end cladding diameter is smaller than an incidence end cladding diameter thereof, and a light emission region thereof is made smaller. An angle of luminous flux from this higher luminance bundled fiber light source, which passes through a lens system and is incident on a DMD, is smaller, i.e., an illumination NA is made smaller. Thus, an angle of flux which is incident on a surface that is to be exposed is smaller. That is, a minute image formation beam can be obtained without increasing the image formation NA, focal depth is lengthen.
    Type: Application
    Filed: August 3, 2005
    Publication date: December 22, 2005
    Inventors: Yoji Okazaki, Hiromi Ishikawa, Kazuhiko Nagano, Takeshi Fujii, Hiromitsu Yamakawa
  • Publication number: 20050281516
    Abstract: An optical fiber of a bundled fiber light source is an optical fiber whose core diameter is uniform but whose emission end cladding diameter is smaller than an incidence end cladding diameter thereof, and a light emission region thereof is made smaller. An angle of luminous flux from this higher luminance bundled fiber light source, which passes through a lens system and is incident on a DMD, is smaller, i.e., an illumination NA is made smaller. Thus, an angle of flux which is incident on a surface that is to be exposed is smaller. That is, a minute image formation beam can be obtained without increasing the image formation NA, focal depth is lengthen.
    Type: Application
    Filed: August 3, 2005
    Publication date: December 22, 2005
    Inventors: Yoji Okazaki, Hiromi Ishikawa, Kazuhiko Nagano, Takeshi Fujii, Hiromitsu Yamakawa
  • Patent number: 6975659
    Abstract: A plurality of multi-cavity laser diode chips, each having a plurality of light emitting points, are fixed side by side and form a laser diode array.
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: December 13, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kazuhiko Nagano, Yoji Okazaki, Teruhiko Kuramachi
  • Publication number: 20050265655
    Abstract: An optical fiber of a bundled fiber light source is an optical fiber whose core diameter is uniform but whose emission end cladding diameter is smaller than an incidence end cladding diameter thereof, and a light emission region thereof is made smaller. An angle of luminous flux from this higher luminance bundled fiber light source, which passes through a lens system and is incident on a DMD, is smaller, i.e., an illumination NA is made smaller. Thus, an angle of flux which is incident on a surface that is to be exposed is smaller. That is, a minute image formation beam can be obtained without increasing the image formation NA, focal depth is lengthen.
    Type: Application
    Filed: August 3, 2005
    Publication date: December 1, 2005
    Inventors: Yoji Okazaki, Hiromi Ishikawa, Kazuhiko Nagano, Takeshi Fujii, Hiromitsu Yamakawa