Patents by Inventor Hiromi Ishikawa

Hiromi Ishikawa 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: 20050191016
    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: Application
    Filed: April 28, 2005
    Publication date: September 1, 2005
    Inventors: Hiromi Ishikawa, Kazuhiko Nagano, Yoji Okazaki, Takeshi Fujii, Hiromitsu Yamakawa
  • Publication number: 20050185157
    Abstract: A spatial light modulator performs spatial light modulation of light produced by a light source. An image-side telecentric image forming optical system forms an image of a two-dimensional pattern of the light, which has been obtained from the spatial light modulation, on a photosensitive material. An axial air separation adjusting section is located between the image forming optical system and the photosensitive material. The axial air separation adjusting section alters an axial air separation between the image forming optical system and the photosensitive material and thereby adjusts a focusing point at the time of the formation of the image of the two-dimensional pattern of the light.
    Type: Application
    Filed: April 25, 2005
    Publication date: August 25, 2005
    Inventors: Hiromi Ishikawa, Masahiro Ohba, Norihisa Takada, Yutaka Korogi
  • Publication number: 20050186508
    Abstract: The invention provides a stereolithographic resin composition including a photo-curable component, a resin having a function of causing a reversible, quick sol-gel phase transition based on temperature change, and a filler, and a stereolithographic method using the resin composition.
    Type: Application
    Filed: April 28, 2005
    Publication date: August 25, 2005
    Inventors: Kazuhiko Nagano, Yoji Okazaki, Takeshi Fujii, Hiromi Ishikawa
  • Publication number: 20050180692
    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: Application
    Filed: April 13, 2005
    Publication date: August 18, 2005
    Inventors: Hiromi Ishikawa, Kazuhiko Nagano, Yoji Okazaki, Takeshi Fujii, Hiromitsu Yamakawa
  • Publication number: 20050179772
    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: Application
    Filed: April 13, 2005
    Publication date: August 18, 2005
    Inventors: Hiromi Ishikawa, Kazuhiko Nagano, Yoji Okazaki, Takeshi Fujii, Hiromitsu Yamakawa
  • Patent number: 6930761
    Abstract: A spatial light modulator performs spatial light modulation of light produced by a light source. An image-side telecentric image forming optical system forms an image of a two-dimensional pattern of the light, which has been obtained from the spatial light modulation, on a photosensitive material. An axial air separation adjusting section is located between the image forming optical system and the photosensitive material. The axial air separation adjusting section alters an axial air separation between the image forming optical system and the photosensitive material and thereby adjusts a focusing point at the time of the formation of the image of the two-dimensional pattern of the light.
    Type: Grant
    Filed: May 6, 2004
    Date of Patent: August 16, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiromi Ishikawa, Masahiro Ohba, Norihisa Takada, Yutaka Korogi
  • Publication number: 20050175302
    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 described, 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.
    Type: Application
    Filed: April 13, 2005
    Publication date: August 11, 2005
    Inventors: Hiromi Ishikawa, Kazuhiko Nagano, Yoji Okazaki, Takeshi Fujii, Hiromitsu Yamakawa
  • Patent number: 6928198
    Abstract: 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 digital micromirror device (DMD) is placed satisfies the following formula: D W ? ? × M 2 × t - K × ? a ? .
    Type: Grant
    Filed: May 23, 2003
    Date of Patent: August 9, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiromi Ishikawa, Yoji Okazaki, Kazuhiko Nagano
  • Publication number: 20050168823
    Abstract: An image exposure system is formed by a spatial light modulator element comprising a number of two-dimensionally arranged pixel portions each modulating light projected thereon, a light source which projects light onto the spatial light modulator element and an imaging optical system which includes a micro lens array and forms on a photosensitive material an image of light modulated by the spatial light modulator element, the micro lens array being made up of micro lenses which are arranged like an array and collect light from the pixel portions of the spatial light modulator element. Each micro lens of the micro lens array has an aspherical surface or a refractive index profile which corrects aberration due to distortion of the pixel portions or has a shape of lens aperture which does not permit light from a periphery of each of the pixel portions of the spatial light modulator element.
    Type: Application
    Filed: December 27, 2004
    Publication date: August 4, 2005
    Inventors: Shuichi Ishii, Hiromi Ishikawa
  • Publication number: 20050147138
    Abstract: In an image forming apparatus: pixel portions of a spatial light-modulation element are two-dimensionally arranged, and individually modulate portions of light applied to the spatial light-modulation element, according to control signals; a first image-forming optical system is arranged in optical paths of the portions of the light modulated by the pixel portions; a microlens array is arranged in a vicinity of an image-forming plane of the first image-forming optical system, and has microlenses arranged in correspondence with the pixel portions, respectively; and a second image-forming optical system is arranged in optical paths of the portions of the light which have passed through the microlenses, and forms on a predetermined surface an image represented by the portions of the light modulated by the spatial light-modulation element. Each of the first and second image-forming optical systems forms an image with a magnification power greater than one.
    Type: Application
    Filed: February 15, 2005
    Publication date: July 7, 2005
    Inventors: Hiromi Ishikawa, Kazuhiko Nagano
  • Patent number: 6894712
    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 9, 2003
    Date of Patent: May 17, 2005
    Assignees: Fuji Photo Film Co., Ltd., Fuji Photo Optical Co., Ltd.
    Inventors: Hiromi Ishikawa, Kazuhiko Nagano, Yoji Okazaki, Takeshi Fujii, Hiromitsu Yamakawa
  • Patent number: 6876494
    Abstract: In an image forming apparatus: pixel portions of a spatial light-modulation element are two-dimensionally arranged, and individually modulate portions of light applied to the spatial light-modulation element, according to control signals; a first image-forming optical system is arranged in optical paths of the portions of the light modulated by the pixel portions; a microlens array is arranged in a vicinity of an image-forming plane of the first image-forming optical system, and has microlenses arranged in correspondence with the pixel portions, respectively; and a second image-forming optical system is arranged in optical paths of the portions of the light which have passed through the microlenses, and forms on a predetermined surface an image represented by the portions of the light-modulated by the spatial light-modulation element. Each of the first and second image-forming optical systems forms an image with a magnification power greater than one.
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: April 5, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiromi Ishikawa, Kazuhiko Nagano
  • Patent number: 6875994
    Abstract: A radiation image read-out apparatus for reading out a radiation image recorded on a stimulable phosphor sheet includes a stimulating light projector which projects stimulating light emitted from a stimulating light source onto the stimulable phosphor sheet through a projecting optical system so that the stimulating light is collected in a line-like area of the stimulable phosphor sheet, and a line sensor which detects stimulated emission emitted from the line-like area of the stimulable phosphor sheet upon exposure to the stimulating light. The projecting optical system has an aspheric toric surface.
    Type: Grant
    Filed: July 15, 2002
    Date of Patent: April 5, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Hiromi Ishikawa
  • Publication number: 20050028353
    Abstract: A base plate and load beam for an HG assembly are formed in series, stacked, and transferred by a transfer system in the form of the stacked-layer series to undergo the necessary assembly processes such as layer joining, slider attachment, and electrical connections between the terminals thereon. When uncompleted HG assemblies are transferred for each of the manufacturing processes, the uncompleted HG assembly is mounted on the assembly jig such as a tray or a block for transference. For this reason, assemblingjigs, the number of which is at least equal to the number of the uncompleted HG assemblies remaining at the respective assembly processes would be needed. Accordingly, the efficiency of work space is reduced, and a rise in manufacturing cost is brought about by the need for the assembling jigs.
    Type: Application
    Filed: August 30, 2004
    Publication date: February 10, 2005
    Inventors: Takao Kidachi, Tadaaki Tomiyama, Yoshio Uematsu, Hiromi Ishikawa, Tatsushi Yoshida, Hiroyoshi Yokome, Yukihiro Nakamura, Hisashi Ohyama, Tatsumi Tsuchiya
  • Publication number: 20050022372
    Abstract: A base plate and load beam for an HG assembly are formed in series, stacked, and transferred by a transfer system in the form of the stacked-layer series to undergo the necessary assembly processes such as layer joining, slider attachment, and electrical connections between the terminals thereon. When uncompleted HG assemblies are transferred for each of the manufacturing processes, the uncompleted HG assembly is mounted on the assembly jig such as a tray or a block for transference. For this reason, assembling jigs, the number of which is at least equal to the number of the uncompleted HG assemblies remaining at the respective assembly processes would be needed. Accordingly, the efficiency of work space is reduced, and a rise in manufacturing cost is brought about by the need for the assembling jigs.
    Type: Application
    Filed: August 30, 2004
    Publication date: February 3, 2005
    Inventors: Takao Kidachi, Tadaaki Tomiyama, Yoshio Uematsu, Hiromi Ishikawa, Tatsushi Yoshida, Hiroyoshi Yokome, Yukihiro Nakamura, Hisashi Ohyama, Tatsumi Tsuchiya
  • Publication number: 20050024477
    Abstract: In an exposure head of the invention, plural first micro-focusing elements are arranged in a first microlens array so as to correspond to plural micromirrors in a DMD. An aperture array that includes plural apertures arranged so as to respectively correspond to the plural first micro-focusing elements is disposed. The apertures allow only main portions of Fraunhofer diffraction images to be transmitted therethrough. The main portions of the Fraunhofer diffraction images transmitted through the apertures are imaged on an exposure plane by second micro-focusing elements of a second microlens array. According to the exposure head of the invention, cross-talk light and scattered light can be effectively reduced, and beam diameters of beam spots projected on the exposure plane through the apertures can be adjusted to a required size.
    Type: Application
    Filed: July 26, 2004
    Publication date: February 3, 2005
    Inventors: Masaru Noguchi, Hiromi Ishikawa
  • Publication number: 20050024777
    Abstract: A base plate and load beam for an HG assembly are formed in series, stacked, and transferred by a transfer system in the form of the stacked-layer series to undergo the necessary assembly processes such as layer joining, slider attachment, and electrical connections between the terminals thereon. When uncompleted HG assemblies are transferred for each of the manufacturing processes, the uncompleted HG assembly is mounted on the assembly jig such as a tray or a block for transference. For this reason, assembling jigs, the number of which is at least equal to the number of the uncompleted HG assemblies remaining at the respective assembly processes would be needed. Accordingly, the efficiency of work space is reduced, and a rise in manufacturing cost is brought about by the need for the assembling jigs.
    Type: Application
    Filed: August 30, 2004
    Publication date: February 3, 2005
    Inventors: Takao Kidachi, Tadaaki Tomiyama, Yoshio Uematsu, Hiromi Ishikawa, Tatsushi Yoshida, Hiroyoshi Yokome, Yukihiro Nakamura, Hisashi Ohyama, Tatsumi Tsuchiya
  • Publication number: 20040246454
    Abstract: A spatial light modulator performs spatial light modulation of light produced by a light source. An image-side telecentric image forming optical system forms an image of a two-dimensional pattern of the light, which has been obtained from the spatial light modulation performed by the spatial light modulator, on a photosensitive material. At least either one of two pupil-adjacent lenses, which are adjacent to each other with an entrance pupil position in the image forming optical system intervening between the two pupil-adjacent lenses, is constituted such that at least either one of lens surfaces of the pupil-adjacent lens is an aspherical surface.
    Type: Application
    Filed: April 30, 2004
    Publication date: December 9, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Hiromi Ishikawa, Sumihiro Nishihata
  • Patent number: 6823581
    Abstract: A base plate and load beam for an HG assembly are formed in series, stacked, and transferred by a transfer system in the form of the stacked-layer series to undergo the necessary assembly processes such as layer joining, slider attachment, and electrical connections between the terminals thereon. When uncompleted HG assemblies are transferred for each of the manufacturing processes, the uncompleted HG assembly is mounted on the assembly jig such as a tray or a block for transference. For this reason, assembling jigs, the number of which is at least equal to the number of the uncompleted HG assemblies remaining at the respective assembly processes would be needed. Accordingly, the efficiency of work space is reduced, and a rise in manufacturing cost is brought about by the need for the assembling jigs.
    Type: Grant
    Filed: November 20, 2001
    Date of Patent: November 30, 2004
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Takao Kidachi, Tadaaki Tomiyama, Yoshio Uematsu, Hiromi Ishikawa Ishikawa, Tatsushi Yoshida, Hiroyoshi Yokome, Yukihiro Nakamura, Hisashi Ohyama, Tatsumi Tsuchiya
  • Publication number: 20040223229
    Abstract: A spatial light modulator has pixel sections for performing spatial light modulation of light. An image-side telecentric image forming optical system forms an image of a two-dimensional pattern of the light having been obtained from the spatial light modulation. A microlens array having microlenses arrayed in two-dimensional directions is located in the vicinity of a plane of image formation of the two-dimensional pattern, whose image is formed by the image forming optical system. A magnification adjusting optical system for adjusting a magnification of image formation at the time of the formation of the image of the two-dimensional pattern of the light with the image forming optical system is located between the image forming optical system and the microlens array.
    Type: Application
    Filed: May 5, 2004
    Publication date: November 11, 2004
    Inventor: Hiromi Ishikawa