Patents by Inventor Toyoharu Hanzawa
Toyoharu Hanzawa 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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Publication number: 20090015942Abstract: The invention relates to an electronic image pickup system whose depth dimension is extremely reduced, taking advantage of an optical system type that can overcome conditions imposed on the movement of a zooming movable lens group while high specifications and performance are kept. The electronic image pickup system comprises an optical path-bending zoom optical system comprising, in order from its object side, a 1-1st lens group G1-1 comprising a negative lens group and a reflecting optical element P for bending an optical path, a 1-2nd lens group G1-2 comprising one positive lens and a second lens group G2 having positive refracting power. For zooming from the wide-angle end to the telephoto end, the second lens group G2 moves only toward the object side. The electronic image pickup system also comprises an electronic image pickup device I located on the image side of the zoom optical system.Type: ApplicationFiled: September 8, 2008Publication date: January 15, 2009Inventors: Shinichi Mihara, Hirokazu Konishi, Toyoharu Hanzawa, Masahito Watanabe, Atsujiro Ishii, Tetsuhide Takeyama, Ayami Imamura
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Patent number: 7436599Abstract: The invention relates to an electronic image pickup system whose depth dimension is extremely reduced, taking advantage of an optical system type that can overcome conditions imposed on the movement of a zooming movable lens group while high specifications and performance are kept. The electronic image pickup system comprises an optical path-bending zoom optical system comprising, in order from its object side, a 1-1st lens group G1-1 comprising a negative lens group and a reflecting optical element P for bending an optical path, a 1-2nd lens group G1-2 comprising one positive lens and a second lens group G2 having positive refracting power. For zooming from the wide-angle end to the telephoto end, the second lens group G2 moves only toward the object side. The electronic image pickup system also comprises an electronic image pickup device I located on the image side of the zoom optical system.Type: GrantFiled: May 10, 2002Date of Patent: October 14, 2008Assignee: Olympus CorporationInventors: Shinichi Mihara, Hirokazu Konishi, Toyoharu Hanzawa, Masahito Watanabe, Atsujiro Ishii, Tetsuhide Takeyama, Ayami Imamura
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Patent number: 7432974Abstract: An optical system enables images of a wide range of natural subjects to be well reproduced with their colors, and provides an image pickup system including, at least, an image pickup optical system, an electronic image pickup device having three or more different spectral characteristics to obtain a color image, and a controller for implementing signal processing or image processing on the basis of an output from the electronic image pickup device. The optical element that takes part in the determination of a focal length in said image pickup system includes an optical element making use of a refraction phenomenon alone.Type: GrantFiled: October 6, 2006Date of Patent: October 7, 2008Assignee: Olympus CorporationInventors: Shinichi Mihara, Toyoharu Hanzawa, Toshihide Nozawa
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Patent number: 7380998Abstract: An image pickup apparatus comprising a first lens unit which comprises at least a negative lens element and at least a positive lens element and has negative refractive power, a second lens unit which has positive refractive power, and an optical path bending reflecting optical element which has a variable reflecting surface disposed in an airspace between a most object side lens component of the first lens unit and a most object side lens component of the second lens unit. This image pickup apparatus changes a magnification by moving the second lens unit along an optical axis and corrects a deviation of an image location by varying a shape of the variable reflecting surface of the reflecting optical element.Type: GrantFiled: April 30, 2007Date of Patent: June 3, 2008Assignee: Olympus CorporationInventors: Shinichi Mihara, Masahito Watanabe, Tomoyuki Satori, Toyoharu Hanzawa, Shigeru Kato
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Patent number: 7365910Abstract: The invention relates to an electronic image pickup system whose depth dimension is extremely reduced, taking advantage of an optical system type that can overcome conditions imposed on the movement of a zooming movable lens group while high specifications and performance are kept. The electronic image pickup system comprises an optical path-bending zoom optical system comprising, in order from its object side, a 1-1st lens group G1-1 comprising a negative lens group and a reflecting optical element P for bending an optical path, a 1-2nd lens group G1-2 comprising one positive lens and a second lens group G2 having positive refracting power. For zooming from the wide-angle end to the telephoto end, the second lens group G2 moves only toward the object side. The electronic image pickup system also comprises an electronic image pickup device I located on the image side of the zoom optical system.Type: GrantFiled: January 20, 2004Date of Patent: April 29, 2008Assignee: Olympus CorporationInventors: Atsujiro Ishii, Toyoharu Hanzawa
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Publication number: 20070258711Abstract: An image pickup apparatus comprising a first lens unit which comprises at least a negative lens element and at least a positive lens element and has negative refractive power, a second lens unit which has positive refractive power, and an optical path bending reflecting optical element which has a variable reflecting surface disposed in an airspace between a most object side lens component of the first lens unit and a most object side lens component of the second lens unit. This image pickup apparatus changes a magnification by moving the second lens unit along an optical axis and corrects a deviation of an image location by varying a shape of the variable reflecting surface of the reflecting optical element.Type: ApplicationFiled: April 30, 2007Publication date: November 8, 2007Applicant: Olympus CorporationInventors: Shinichi Mihara, Masahito Watanabe, Tomoyuki Satori, Toyoharu Hanzawa, Shigeru Kato
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Patent number: 7280274Abstract: A three-dimensional image observation microscope system includes an imaging unit that captures images focused at different object point distances in an optical axis direction and a display unit that displays a plurality of the images captured by the imaging unit for overlaid observation along the line of sight of a viewer as a three-dimensional image. The imaging unit includes an objective optical system that obtains an image of an object, a zoom optical system that controls the magnification of the image obtained by the objective optical system, and a plurality of image pickup devices that capture the images with a magnification controlled by the zoom optical system. Specified conditions related to focal length, numerical apertures, inclinations, magnifications and distances within the imaging unit and the display unit are satisfied.Type: GrantFiled: January 24, 2006Date of Patent: October 9, 2007Assignee: Olympus Medical Systems Corp.Inventor: Toyoharu Hanzawa
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Patent number: 7253834Abstract: An image pickup apparatus comprising a first lens unit which comprises at least a negative lens element and at least a positive lens element and has negative refractive power, a second lens unit which has positive refractive power, and an optical path bending reflecting optical element which has a variable reflecting surface disposed in an airspace between a most object side lens component of the first lens unit and a most object side lens component of the second lens unit. This image pickup apparatus changes a magnification by moving the second lens unit along an optical axis and corrects a deviation of an image location by varying a shape of the variable reflecting surface of the reflecting optical element.Type: GrantFiled: March 20, 2002Date of Patent: August 7, 2007Assignee: Olympus CorporationInventors: Shinichi Mihara, Masahito Watanabe, Tomoyuki Satori, Toyoharu Hanzawa, Shigeru Kato
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Publication number: 20070035646Abstract: An optical system is presented that enables images of a wide range of natural subjects to be well reproduced with their colors, and provides an image pickup system including, at least, an image pickup optical system, an electronic image pickup device having three or more different spectral characteristics to obtain a color image, and a controller for implementing signal processing or image processing on the basis of an output from the electronic image pickup device. The optical element that takes part in determining the focal length in the image pickup system includes an optical element making use of a refraction phenomenon alone.Type: ApplicationFiled: October 19, 2006Publication date: February 15, 2007Applicant: OLYMPUS CORPORATIONInventors: Shinichi Mihara, Hisashi Goto, Yuji Miyauchi, Toyoharu Hanzawa, Masahiro Imamura, Yuko Kobayashi, Tsutomu Uzawa, Toshihide Nozawa, Takuji Horie, Kouki Hozumi
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Publication number: 20070030368Abstract: An optical system is presented that enables images of a wide range of natural subjects to be well reproduced with their colors, and provides an image pickup system including, at least, an image pickup optical system, an electronic image pickup device having three or more different spectral characteristics to obtain a color image, and a controller for implementing signal processing or image processing on the basis of an output from the electronic image pickup device. The optical element that takes part in determining the focal length in the image pickup system includes an optical element making use of a refraction phenomenon alone.Type: ApplicationFiled: October 11, 2006Publication date: February 8, 2007Applicant: OLYMPUS CORPORATIONInventors: Shinichi Mihara, Hisashi Goto, Yuji Miyauchi, Toyoharu Hanzawa, Masahiro Imamura, Yuko Kobayashi, Tsutomu Uzawa, Toshihide Nozawa, Takuji Horie, Kouki Hozumi
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Patent number: 7167304Abstract: A binocular stereoscopic observation apparatus includes an imaging section forming left and right images with parallax in at least two directions and an observing section in which the images with parallax are stereoscopically observed with a viewer's eyes. In this case, the imaging section has an imaging lens forming images of an object at imaging positions on each of left and right optical paths and i imaging positions on the optical axis of the imaging lens, satisfying the following conditions: L(j?1)<Lj Ek=Lj?L(j?1) Dd<Ek where Lj is a distance, measured along the optical axis, from the imaging lens to the jth imaging position, Ek is a difference between distances, measured along the optical axis, from adjacent imaging positions to the imaging lens, and Dd is an image-side depth of an optical system of the imaging section.Type: GrantFiled: January 26, 2005Date of Patent: January 23, 2007Assignee: Olympus CorporationInventor: Toyoharu Hanzawa
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Publication number: 20060181767Abstract: A three-dimensional image observation microscope system includes an imaging unit that captures images focused at different object point distances in an optical axis direction and a display unit that displays a plurality of the images captured by said imaging unit for overlaid observation along the line of sight of a viewer as a three-dimensional image. The imaging unit includes an objective optical system that obtains an image of an object, a zoom optical system that controls the magnification of the image obtained by said objective optical system, and a plurality of image pickup devices that capture the images with a magnification controlled by said zoom optical system. Specified conditions related to focal length, numerical apertures, inclinations, magnifications and distances within the imaging unit and the display unit are satisfied.Type: ApplicationFiled: January 24, 2006Publication date: August 17, 2006Inventor: Toyoharu Hanzawa
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Publication number: 20060181615Abstract: An optical system enables images to be well reproduced with their colors, and provides an image pickup system including an image pickup optical system, an electronic image pickup device to obtain a color image and a controller for implementing signal processing or image processing on the basis of an output from the electronic image pickup device. The optical element that takes part in the determination of a focal length includes an optical element making use of a refraction phenomenon alone. The 400-nm wavelength input/output ratio is 10% or less with respect to an input-output ratio for a 400-nm to 800-nm wavelength at which an output signal strength ratio with respect to an input quantity of light is highest when the input quantity of light is defined by the quantity of a light beam emanating from the same object point and entering the image pickup optical system and the output signal strength is defined by the strength of a signal produced from the controller in response to the light beam.Type: ApplicationFiled: April 10, 2006Publication date: August 17, 2006Applicant: OLYMPUS CORPORATIONInventors: Shinichi Mihara, Hisashi Goto, Yuji Miyauchi, Toyoharu Hanzawa, Masahiro Imamura, Yuko Kobayashi, Tsutomu Uzawa, Toshihide Nozawa, Takuji Horie, Kouki Hozumi
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Patent number: 7085045Abstract: A stereoscopic microscope is disclosed that includes an objective lens which substantially collimates light from an object of interest, left and right afocal zooming systems, left and right afocal relay systems, and an ocular tube optical system which forms magnified images of the object. The optical axis of the objective lens is substantially normal to a plane that includes the optical axes of the left and right afocal zooming systems, a beam splitter is arranged in each optical path between the left and right afocal zooming systems and said ocular tube optical system, and in each optical path between the left and right afocal zooming systems and the ocular tube optical system, there is at least one region between the beam splitter and the ocular tube optical system where the optical axes of light fluxes from an observation object point intersect. Preferably, there are additional regions of intersecting light.Type: GrantFiled: September 4, 2003Date of Patent: August 1, 2006Assignee: Olympus CorporationInventors: Toyoharu Hanzawa, Kazuo Morita, Yasushi Namii
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Patent number: 7057659Abstract: The invention relates to an optical system which, albeit being simple in construction, enables images of a wide range of natural subjects to be well reproduced with their colors, and provides an image pickup system comprising, at least, an image pickup optical system 1, an electronic image pickup device 3 having three or more different spectral characteristics to obtain a color image and a controller 4 for implementing signal processing or image processing on the basis of an output from the electronic image pickup device. The optical element that takes part in the determination of a focal length in said image pickup system comprises an optical element making use of a refraction phenomenon alone.Type: GrantFiled: July 7, 2000Date of Patent: June 6, 2006Assignee: Olympus CorporationInventors: Shinichi Mihara, Hisashi Goto, Yuji Miyauchi, Toyoharu Hanzawa, Masahiro Imamura, Yuko Kobayashi, Tsutomu Uzawa, Toshihide Nozawa, Takuji Horie, Kouki Hozumi
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Patent number: 6996341Abstract: A photographic apparatus is disclosed for use with a stereoscopic microscope having at least two observation light paths for obtaining at least two images having parallax, with the photographic apparatus guiding a light flux that has been split from one of the observation optical paths. The photographic apparatus includes: a connecting part that may be connected to the stereoscopic microscope; at least two image pickup elements, each having an image receiving surface; a beam splitter positioned in an optical path between the connecting part and the at least two image receiving surfaces; and an image relay optical system in each light flux following the beam splitter. Each image relay optical system relays an intermediate image that is formed in each light flux following the beam splitter to a respective one of the at least two image receiving surfaces.Type: GrantFiled: September 17, 2003Date of Patent: February 7, 2006Assignee: Olympus CorporationInventor: Toyoharu Hanzawa
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Publication number: 20050128287Abstract: A binocular stereoscopic observation apparatus includes an imaging section forming left and right images with parallax in at least two directions and an observing section in which the images with parallax are stereoscopically observed with a viewer's eyes. In this case, the imaging section has an imaging lens forming images of an object at imaging positions on each of left and right optical paths and i imaging positions on the optical axis of the imaging lens, satisfying the following conditions: L(j?1)<Lj Ek=Lj?L(j?1) Dd<Ek where Lj is a distance, measured along the optical axis, from the imaging lens to the jth imaging position, Ek is a difference between distances, measured along the optical axis, from adjacent imaging positions to the imaging lens, and Dd is an image-side depth of an optical system of the imaging section.Type: ApplicationFiled: January 26, 2005Publication date: June 16, 2005Inventor: Toyoharu Hanzawa
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Publication number: 20040169764Abstract: The invention relates to an electronic image pickup system whose depth dimension is extremely reduced, taking advantage of an optical system type that can overcome conditions imposed on the movement of a zooming movable lens group while high specifications and performance are kept. The electronic image pickup system comprises an optical path-bending zoom optical system comprising, in order from its object side, a 1-1st lens group G1-1 comprising a negative lens group and a reflecting optical element P for bending an optical path, a 1-2nd lens group G1-2 comprising one positive lens and a second lens group G2 having positive refracting power. For zooming from the wide-angle end to the telephoto end, the second lens group G2 moves only toward the object side. The electronic image pickup system also comprises an electronic image pickup device I located on the image side of the zoom optical system.Type: ApplicationFiled: January 20, 2004Publication date: September 2, 2004Inventors: Atsujiro Ishii, Toyoharu Hanzawa
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Publication number: 20040091259Abstract: A photographic apparatus is disclosed for use with a stereoscopic microscope having at least two observation light paths for obtaining at least two images having parallax, with the photographic apparatus guiding a light flux that has been split from one of the observation optical paths. The photographic apparatus includes: a connecting part that may be connected to the stereoscopic microscope; at least two image pickup elements, each having an image receiving surface; a beam splitter positioned in an optical path between the connecting part and the at least two image receiving surfaces; and an image relay optical system in each light flux following the beam splitter. Each image relay optical system relays an intermediate image that is formed in each light flux following the beam splitter to a respective one of the at least two image receiving surfaces.Type: ApplicationFiled: September 17, 2003Publication date: May 13, 2004Inventor: Toyoharu Hanzawa
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Publication number: 20040051946Abstract: A stereoscopic microscope is disclosed that includes an objective lens which substantially collimates light from an object of interest, left and right afocal zooming systems, left and right afocal relay systems, and an ocular tube optical system which forms magnified images of the object. The optical axis of the objective lens is substantially normal to a plane that includes the optical axes of the left and right afocal zooming systems, a beam splitter is arranged in each optical path between the left and right afocal zooming systems and said ocular tube optical system, and in each optical path between the left and right afocal zooming systems and the ocular tube optical system, there is at least one region between the beam splitter and the ocular tube optical system where the optical axes of light fluxes from an observation object point intersect. Preferably, there are additional regions of intersecting light.Type: ApplicationFiled: September 4, 2003Publication date: March 18, 2004Inventors: Toyoharu Hanzawa, Kazuo Morita, Yasushi Namii