Patents by Inventor Katsuya Yagi
Katsuya Yagi 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).
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Patent number: 9591241Abstract: A compound eye optical system forms a plurality of images with different fields of view for connecting the plurality of images with the different fields of view and outputting one composite image. The system includes: a plurality of individual eye optical systems forming the plurality of images with different fields of view on an imaging surface; and an overall optical system forming an image with a field of view incorporating the entire fields of view obtained by the plurality of individual eye optical systems on the imaging surface, wherein the individual eye optical systems and the overall optical system are configured by a lens array plate having a plurality of lenses integrally formed.Type: GrantFiled: December 4, 2013Date of Patent: March 7, 2017Assignee: Konica Minolta, Inc.Inventors: Kenji Konno, Motohiro Asano, Jun Takayama, Makoto Jin, Shoji Kogo, Katsuya Yagi, Hiroshi Hatano
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Publication number: 20150312496Abstract: A compound eye optical system forms a plurality of images with different fields of view for connecting the plurality of images with the different fields of view and outputting one composite image. The system includes: a plurality of individual eye optical systems forming the plurality of images with different fields of view on an imaging surface; and an overall optical system forming an image with a field of view incorporating the entire fields of view obtained by the plurality of individual eye optical systems on the imaging surface, wherein the individual eye optical systems and the overall optical system are configured by a lens array plate having a plurality of lenses integrally formed.Type: ApplicationFiled: December 4, 2013Publication date: October 29, 2015Inventors: Kenji KONNO, Motohiro ASANO, Jun TAKAYAMA, Makoto JIN, Shoji KOGO, Katsuya YAGI, Hiroshi HATANO
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Patent number: 8199616Abstract: A method for assembling an optical pickup apparatus for recording/reproducing a high density DVD, DVD and CD including two objective lens and three laser light sources, the objective lenses being provided on the lens holder having an actuator base for supporting the actuator, the method for assembling the optical pickup apparatus comprises the steps of adjusting a first tilt angle of the actuator base so that a coma aberration of a spot formed by the first light beams decreases when the first light beams are converged onto the first recording medium via the first objective lens, and adjusting a second tilt angle formed between the second objective lens and the lens holder so that a coma aberration of a beam spot formed by the second light beams decreases when the second light beams are converged onto the second recording medium via the second objective lens.Type: GrantFiled: November 15, 2010Date of Patent: June 12, 2012Assignee: Konica Minolta Opto, Inc.Inventors: Hideyuki Fujii, Tatsuji Kurogama, Katsuya Yagi, Katsumi Fujiwara
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Publication number: 20110122746Abstract: A method for assembling an optical pickup apparatus for recording/reproducing a high density DVD, DVD and CD including two objective lens and three laser light sources, the objective lenses being provided on the lens holder having an actuator base for supporting the actuator, the method for assembling the optical pickup apparatus comprises the steps of adjusting a first tilt angle of the actuator base so that a coma aberration of a spot formed by the first light beams decreases when the first light beams are converged onto the first recording medium via the first objective lens, and adjusting a second tilt angle formed between the second objective lens and the lens holder so that a coma aberration of a beam spot formed by the second light beams decreases when the second light beams are converged onto the second recording medium via the second objective lens.Type: ApplicationFiled: November 15, 2010Publication date: May 26, 2011Applicant: Konica Minolta Opto, Inc.Inventors: Hideyuki Fujii, Tatsuji Kurogama, Katsuya Yagi, Katsumi Fujiwara
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Patent number: 7929385Abstract: An optical pickup apparatus for recording and/or reproducing information onto/or from information recording surface, the optical pickup apparatus comprises a laser light source, an objective lens for converging light beams from the laser light source onto the information recording surface through a protective layer of an optical information recording medium, an optical device for changing a divergence angle of incident light beams by moving in an optical axis direction, the optical device being arranged between the laser light source and the objective lens, a light receiving device for receiving light beams reflected by the information recording surface and passed through the objective lens, and a driving device capable of moving the optical device in a direction crossing the optical axis.Type: GrantFiled: July 5, 2005Date of Patent: April 19, 2011Assignee: Konica Minolta Opto, Inc.Inventors: Katsumi Fujiwara, Tatsuji Kurogama, Katsuya Yagi, Hideyuki Fujii
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Patent number: 7843777Abstract: A method for assembling an optical pickup apparatus for recording/reproducing a high density DVD, DVD and CD including two objective lens and three laser light sources, the objective lenses being provided on the lens holder having an actuator base for supporting the actuator, the method for assembling the optical pickup apparatus comprises the steps of adjusting a first tilt angle of the actuator base so that a coma aberration of a spot formed by the first light beams decreases when the first light beams are converged onto the first recording medium via the first objective lens, and adjusting a second tilt angle formed between the second objective lens and the lens holder so that a coma aberration of a beam spot formed by the second light beams decreases when the second light beams are converged onto the second recording medium via the second objective lens.Type: GrantFiled: July 13, 2005Date of Patent: November 30, 2010Assignee: Konica Minolta Opto, Inc.Inventors: Hideyuki Fujii, Tatsuji Kurogama, Katsuya Yagi, Katsumi Fujiwara
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Patent number: 7586827Abstract: An optical pickup apparatus has a semiconductor laser source which emits a laser beam in a wavelength band of 405 nm having an elliptic light intensity distribution; a beam shaping element which shapes the light intensity distribution of the laser beam; a polarizing beam splitter having a polarized light separation film in contact with the air and reflecting the laser beam shaped by the beam shaping element on the polarized light separation film; and an objective lens which focuses the laser beam reflected on the polarized light separation film onto an optical information recording medium.Type: GrantFiled: October 25, 2004Date of Patent: September 8, 2009Assignee: Konica Minolta Opto, Inc.Inventors: Takuji Hatano, Katsuya Yagi, Yuichi Atarashi, Yuichiro Ori
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Patent number: 7511880Abstract: The present invention provides a semiconductor light source module including: a semiconductor light source for emitting a light flux with a predefined wavelength; a SHG element for converting an incident light flux entering onto an incident end surface of the SHG element into an outgoing light flux having a different wavelength from the incident light flux; a light converging optical system for converging a light flux emitted from the semiconductor light source onto the incident end surface of the SHG element; a light receiving element for receiving a part of a light flux emitted from the SHG element; and a drive device for driving an optical element in the light converging optical system based on a light flux received by the light receiving element.Type: GrantFiled: October 11, 2006Date of Patent: March 31, 2009Assignees: Konica Minolta Opto, Inc., Corning IncorporatedInventors: Nobuyoshi Mori, Katsuya Yagi, Yuichi Atarashi, Fumio Nagai, David A. Loeber, Jacques Gollier, E. Alan Dowdell
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Patent number: 7221492Abstract: An optical scanning device (1) for scanning an information layer (4) of an optical record carrier (2), the device (1) comprising a radiation source (11) for generating a radiation beam (12, 15, 20) and an objective system (18) for converging the radiation beam on the information layer, the information layer being covered by a transparent layer (3) of thickness td and refractive index nd. The objective system comprises a lens having a protection device projecting away from the lens towards the optical record carrier such that the distance between the protection device and the optical record carrier is less than the free working distance. The lens satisfies the condition: where D is the entrance pupil diameter, FWD is the free working distance, and D, FWD, t and td are all expressed in millimeters and where FWD+td/nd<0.51.Type: GrantFiled: August 4, 2003Date of Patent: May 22, 2007Assignee: Koninklijke Philips Electronics N. V.Inventors: Nobuyoshi Mori, Katsuya Yagi, Bernardus Hendrikus Wilhelmus Hendriks, Johannes Joseph Hubertina Barbara Schleipen, Marco Andreas Jacobus Van As
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Publication number: 20070091411Abstract: The present invention provides a semiconductor light source module including: a semiconductor light source for emitting a light flux with a predefined wavelength; a SHG element for converting an incident light flux entering onto an incident end surface of the SHG element into an outgoing light flux having a different wavelength from the incident light flux; a light converging optical system for converging a light flux emitted from the semiconductor light source onto the incident end surface of the SHG element; a light receiving element for receiving a part of a light flux emitted from the SHG element; and a drive device for driving an optical element in the light converging optical system based on a light flux received by the light receiving element.Type: ApplicationFiled: October 11, 2006Publication date: April 26, 2007Inventors: Nobuyoshi Mori, Katsuya Yagi, Yuichi Atarashi, Fumio Nagai
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Patent number: 7193954Abstract: An optical pickup apparatus includes first, second and third light sources; a light converging optical system including a first objective optical element and a second objective optical element, wherein the first objective optical element converges the light flux emitted from the first light source on a first information recording surface, the second objective optical element converges the light flux emitted from the third light source on a third information recording surface, and the first objective optical element or the second objective optical element converges the light flux emitted from the second light source on a second information recording surface; a lens holder holding the first objective optical element and the second objective element therein; and a chromatic aberration correcting element which corrects a chromatic aberration caused by a wavelength variation in a light flux emitted by the first light source.Type: GrantFiled: March 22, 2004Date of Patent: March 20, 2007Assignee: Konica Minolta Holding, Inc.Inventors: Katsuya Yagi, Yuichi Atarashi, Tohru Kimura, Kiyono Ikenaka
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Publication number: 20060198279Abstract: An optical pickup apparatus includes: a first light source; a second light source; a third light source; an objective lens; a coupling lens; a light flux splitter; and a light-receiving element. The coupling lens is formed of two or more lenses in two or more groups, and at least one group of the lenses forming the coupling lens is arranged movably along an optical axis of the coupling lens. The each of the first to third light source and a light-receiving portion in the light-receiving element is optically conjugate each other through an information recording surface of the information recording medium when at least one group of the lenses in the coupling lens is positioned at the predefined position.Type: ApplicationFiled: May 5, 2006Publication date: September 7, 2006Inventors: Tatsuji Kurogama, Katsuya Yagi, Kiyono Ikenaka
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Publication number: 20060136714Abstract: Each of a client and a server has a pattern table. The client reads a public key from the pattern table to encrypt data. The client adds a pattern number corresponding to the public key used for encryption to the encrypted data, and transmits the encrypted data to the server. The server searches the pattern table based on the pattern number, to specify a combination of the public key and a secret key. The server decrypts the encrypted data based on the secret key to obtain original data.Type: ApplicationFiled: November 18, 2005Publication date: June 22, 2006Applicant: FUJITSU LIMITEDInventors: Katsuya Yagi, Manabu Ozawa, Kyoko Fujisawa
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Publication number: 20060018214Abstract: A method for assembling an optical pickup apparatus for recording/reproducing a high density DVD, DVD and CD including two objective lens and three laser light sources, the objective lenses being provided on the lens holder having an actuator base for supporting the actuator, the method for assembling the optical pickup apparatus comprises the steps of adjusting a first tilt angle of the actuator base so that a coma aberration of a spot formed by the first light beams decreases when the first light beams are converged onto the first recording medium via the first objective lens, and adjusting a second tilt angle formed between the second objective lens and the lens holder so that a coma aberration of a beam spot formed by the second light beams decreases when the second light beams are converged onto the second recording medium via the second objective lens.Type: ApplicationFiled: July 13, 2005Publication date: January 26, 2006Applicant: Konica Minolta Opto, Inc.Inventors: Hideyuki Fujii, Tatsuji Kurogama, Katsuya Yagi, Katsumi Fujiwara
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Publication number: 20060013109Abstract: An optical pickup apparatus for recording and/or reproducing information onto/or from information recording surface, the optical pickup apparatus comprises a laser light source, an objective lens for converging light beams from the laser light source onto the information recording surface through a protective layer of an optical information recording medium, an optical device for changing a divergence angle of incident light beams by moving in an optical axis direction, the optical device being arranged between the laser light source and the objective lens, a light receiving device for receiving light beams reflected by the information recording surface and passed through the objective lens, and a driving device capable of moving the optical device in a direction crossing the optical axis.Type: ApplicationFiled: July 5, 2005Publication date: January 19, 2006Applicant: Konica Minolta Opto, Inc.Inventors: Katsumi Fujiwara, Tatsuji Kurogama, Katsuya Yagi, Hideyuki Fujii
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Publication number: 20050275917Abstract: An optical scanning device (1) for scanning an information layer (4) of an optical record carrier (2), the device (1) comprising a radiation source (11) for generating a radiation beam (12, 15, 20) and an objective system (18) for converging the radiation beam on the information layer, the information layer being covered by a transparent layer (3) of thickness td and refractive index nd. The objective system comprises a lens having a protection device projecting away from the lens towards the optical record carrier such that the distance between the protection device and the optical record carrier is less than the free working distance. The lens satisfies the condition: where D is the entrance pupil diameter, FWD is the free working distance, and D, FWD, t and td are all expressed in millimeters and where FWD+td/nd<0.51.Type: ApplicationFiled: August 4, 2003Publication date: December 15, 2005Inventors: Nobuyoshi Mori, Katsuya Yagi, Bernardus Hendrikus Hendriks, Johannes Joseph Schleipen, Marco Van As
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Publication number: 20050219988Abstract: An optical pickup apparatus comprises a first, second and third light beam sources for emitting first light beams having wavelengths ?1, ?2 and ?3 (?1<?2<?3) for a first, second and third recording medium respectively having a first, a second and a third protective layers of thickness t1, t2 and t3, an objective optical lens for converging the first, the second and the third light beams onto respective recording surfaces of the first, second and the third recording media, a tracking device for moving the objective optical lens, a first divergent angle changing element for changing a divergent angle of light beams, which is capable of moving in the optical axis direction and placed in an optical path, and a coma aberration correction element for correcting coma aberration caused when the tracking device moves the objective optical element.Type: ApplicationFiled: March 30, 2005Publication date: October 6, 2005Inventors: Yuichi Atarashi, Kohei Ota, Katsuya Yagi, Junji Hashimura, Tohru Kimura, Katsuya Sakamoto
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Publication number: 20050111337Abstract: An optical pickup apparatus has a semiconductor laser source which emits a laser beam in a wavelength band of 405 nm having an elliptic light intensity distribution; a beam shaping element which shapes the light intensity distribution of the laser beam; a polarizing beam splitter having a polarized light separation film in contact with the air and reflecting the laser beam shaped by the beam shaping element on the polarized light separation film; and an objective lens which focuses the laser beam reflected on the polarized light separation film onto an optical information recording medium.Type: ApplicationFiled: October 25, 2004Publication date: May 26, 2005Inventors: Takuji Hatano, Katsuya Yagi, Yuichi Atarashi, Yuichiro Ori
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Publication number: 20050111516Abstract: An optical pickup apparatus detects optical information by making a laser beam in a 405 nm wavelength band emitted from a semiconductor laser light source incident on an optical information recording medium and then making the laser beam reflected from the optical information recording medium incident on a photodetector. The optical pickup apparatus has a polarizing beam splitter including a polarizing beam splitting film that forms an optical path from the semiconductor laser light source to the optical information recording medium by reflecting the s-polarized component of the laser beam and that forms an optical path from the optical information recording medium to the photodetector by transmitting the p-polarized component of the laser beam; and a monitoring sensor that receives the laser beam to monitor the laser output intensity of the semiconductor laser light source.Type: ApplicationFiled: November 4, 2004Publication date: May 26, 2005Inventors: Takuji Hatano, Yuichiro Ori, Katsuya Yagi, Yuichi Atarashi
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Publication number: 20040190423Abstract: An optical pickup apparatus includes first, second and third light sources; a light converging optical system including a first objective optical element and a second objective optical element, wherein the first objective optical element converges the light flux emitted from the first light source on a first information recording surface, the second objective optical element converges the light flux emitted from the third light source on a third information recording surface, and the first objective optical element or the second objective optical element converges the light flux emitted from the second light source on a second information recording surface; a lens holder holding the first objective optical element and the second objective element therein; and a chromatic aberration correcting element which corrects a chromatic aberration caused by a wavelength variation in a light flux emitted by the first light source.Type: ApplicationFiled: March 22, 2004Publication date: September 30, 2004Applicant: Konica Minolta Holding, Inc.Inventors: Katsuya Yagi, Yuichi Atarashi, Tohru Kimura, Kiyono Ikenaka
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Patent number: 5037024Abstract: A method of splicing together metal webs for use in planography with the ends thereof being butted or lapped against each other. In the metal web splicing method, the ends of the metal webs are spliced together in a butted manner, the splice portion thereof is welded, and the welded splice portion is rolled. According to the splicing method, there is left no level difference in the welded splice portion, which eliminates the possibility of the spliced metal webs being broken during the movement thereof and also has no ill effect on the coating process for the spliced metal webs.Type: GrantFiled: December 5, 1989Date of Patent: August 6, 1991Assignee: Fuji Photo Film Co., Ltd.Inventors: Shinichiro Minato, Akio Uesugi, Tsutomu Kakei