Patents by Inventor Yoshio Matsumura

Yoshio Matsumura 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: 20130242184
    Abstract: A zoom lens system, in order from an object side to an image side, comprising: a first lens unit having positive optical power; a second lens unit having negative optical power; a third lens unit having positive optical power; a fourth lens unit having positive optical power; and a fifth lens unit having negative optical power, wherein the first lens unit is composed of only optical elements having optical power, in zooming from a wide-angle limit to a telephoto limit at the time of image taking, at least the first lens unit is fixed with respect to an image surface, and the condition: 0.7<|M4G/M5G|<11.0 (M4G: an amount of movement of the fourth lens unit with respect to the image surface in zooming, M5G is an amount of movement of the fifth lens unit with respect to the image surface in zooming) is satisfied.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 19, 2013
    Applicant: PANASONIC CORPORATION
    Inventor: Yoshio MATSUMURA
  • Publication number: 20130242171
    Abstract: A zoom lens system comprising: a positive first lens unit; a negative second lens unit; a positive third lens unit; a fourth lens unit; and at least one subsequent lens unit, wherein the subsequent lens unit(s) includes a negative lens unit, the first and third lens units are respectively composed of two or less lens elements and four or more lens elements, the first and second lens units move along an optical axis in zooming, and the conditions: 0.0<LGmax/LG2<1.5, 0.2<|f2/fW|, and 0.1<|fe/f2| (LGmax: a maximum value of an axial thickness of the subsequent lens unit(s), LG2: an axial thickness of the second lens unit, fW, f2, and fe: focal lengths of the entire system at a wide-angle limit, the second lens unit, and a negative lens unit located closest to the image side) are satisfied.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 19, 2013
    Applicant: PANASONIC CORPORATION
    Inventors: Yoshiaki KURIOKA, Takehiro NISHIOKA, Yoshio MATSUMURA
  • Publication number: 20130242142
    Abstract: A zoom lens system, in order from an object side to an image side, comprising: a first lens unit having positive optical power; and a second lens unit having negative optical power, wherein the first lens unit is composed of two or less lens elements, in zooming from a wide-angle limit to a telephoto limit at the time of image taking, at least the first lens unit is fixed with respect to an image surface, and the conditions: LT/fT<1.45 and 2.6<(fT/fW)×(tan(?W))2 (LT: an overall length of lens system at a telephoto limit, fT: a focal length of the entire system at the telephoto limit, fW: a focal length of the entire system at a wide-angle limit, ?W: a half view angle at the wide-angle limit) are satisfied.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 19, 2013
    Applicant: PANASONIC CORPORATION
    Inventor: Yoshio MATSUMURA
  • Patent number: 8320051
    Abstract: A zoom lens system, in order from an object side to an image side, comprising a first lens unit having positive optical power, a second lens unit having negative optical power, a third lens unit having positive optical power, and subsequent lens units including a fourth lens unit having optical power, wherein any one of the first lens unit, the second lens unit, the third lens unit, and the subsequent lens units includes a lens element having a reflecting surface that bends a light beam incident from an object, wherein in zooming from a wide-angle limit to a telephoto limit at the time of image taking, the first lens unit and the third lens unit do not move along an optical axis, and wherein the condition is satisfied: 1.42<nd4ave<1.58 (nd4ave is an average of refractive indices to the d-line of the lens elements constituting the fourth lens unit), an imaging device and a camera are provided.
    Type: Grant
    Filed: October 7, 2010
    Date of Patent: November 27, 2012
    Assignee: Panasonic Corporation
    Inventors: Yoshio Matsumura, Tsutomu Iwashita, Yoshiaki Kurioka, Shinji Yamaguchi
  • Publication number: 20120257285
    Abstract: A zoom lens system, in order from an object side to an image side, comprising: a first lens unit having negative optical power; a second lens unit having positive optical power; a third lens unit having negative optical power; and a fourth lens unit having positive optical power, wherein the third lens unit is composed of two or less lens elements, the fourth lens unit is composed of two or less lens elements, the first lens unit has at least one air space between lens elements constituting the first lens unit, and the condition: Dair/fW>0.75 (Dair: an air space located on the most object side in the first lens unit, fW: a focal length of the entire system at a wide-angle limit) is satisfied; an imaging device; and a camera are provided.
    Type: Application
    Filed: April 6, 2012
    Publication date: October 11, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Satoshi Kuzuhara, Yoshio Matsumura
  • Publication number: 20120242887
    Abstract: A zoom lens system, in order from an object side to an image side, comprising a positive first lens unit, a negative second lens unit, a positive third lens unit, a negative fourth lens unit and a positive fifth lens unit, wherein the zoom lens system is provided with an image blur compensating lens unit moving in a direction perpendicular to an optical axis and being a part of the second lens unit or a part of the third lens unit, the first lens unit and the second lens unit individually move relative to an image surface in zooming, and the condition: TmainG/TsubG>3.0 (TmainG: an optical axial thickness of the lens unit containing the image blur compensating lens unit, TsubG: an optical axial thickness of the image blur compensating lens unit) is satisfied; an interchangeable lens apparatus; and a camera system are provided.
    Type: Application
    Filed: March 23, 2012
    Publication date: September 27, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Yoshio Matsumura, Takuya Imaoka
  • Publication number: 20120229902
    Abstract: A zoom lens system, in order from an object side to an image side, comprising: a first lens unit having negative optical power; a second lens unit having positive optical power; a third lens unit having negative optical power; and a subsequent lens unit containing at least a fourth lens unit, wherein in zooming from a wide-angle limit to a telephoto limit at the time of image taking, intervals between the individual lens units vary and the fourth lens unit is fixed relative to an image surface, and wherein the conditions: vd4G<40 and ?w>34 (vd4G: an Abbe number to the d-line of a lens element constituting the fourth lens unit, ?w: a half view angle at a wide-angle limit) are satisfied; an imaging device; and a camera are provided.
    Type: Application
    Filed: March 7, 2012
    Publication date: September 13, 2012
    Applicant: PANASONIC CORPORATION
    Inventor: Yoshio Matsumura
  • Publication number: 20120229903
    Abstract: A zoom lens system, in order from an object side to an image side, comprising: a first lens unit having negative optical power; a second lens unit having positive optical power; a third lens unit having negative optical power; and a fourth lens unit having positive optical power, wherein in zooming from a wide-angle limit to a telephoto limit at the time of image taking, the first lens unit moves along an optical axis, and wherein the second lens unit, in order from an object side to an image side, comprises: a lens element having positive optical power; a lens element having negative optical power; and a lens element having positive optical power, in which air spaces are included between the individual lens elements; an imaging device; and a camera are provided.
    Type: Application
    Filed: March 7, 2012
    Publication date: September 13, 2012
    Applicant: Panasonic Corporation
    Inventor: Yoshio MATSUMURA
  • Publication number: 20120229693
    Abstract: A zoom lens system, in order from an object side to an image side, comprising: a first lens unit; and a subsequent lens unit containing at least a second lens unit, wherein an interval between the first lens unit and the subsequent lens unit varies in zooming, the zoom lens system is provided with a focusing lens unit that moves relative to an image surface in focusing from an infinity in-focus condition to a close-object in-focus condition, the focusing lens unit is an image blur compensating lens unit that moves in a direction perpendicular to an optical axis in order to optically compensate image blur, and the focusing lens unit is arranged on the image side relative to an aperture diaphragm; an imaging device; and a camera are provided.
    Type: Application
    Filed: March 7, 2012
    Publication date: September 13, 2012
    Applicant: PANASONIC CORPORATION
    Inventor: Yoshio Matsumura
  • Publication number: 20120229692
    Abstract: A zoom lens system, in order from an object side to an image side, comprising: a negative first lens unit; and at least one subsequent lens unit, wherein an interval between the first lens unit and the at least one subsequent lens unit varies in zooming, the zoom lens system is provided with: an escaping lens unit that, at the time of retracting, escapes along an axis different from that at the time of image taking; and an image blur compensating lens unit that moves in a direction perpendicular to an optical axis in order to optically compensate image blur, and the escaping lens unit is a lens unit that is different from the image blur compensating lens unit; an imaging device; and a camera are provided.
    Type: Application
    Filed: March 7, 2012
    Publication date: September 13, 2012
    Applicant: PANASONIC CORPORATION
    Inventor: Yoshio Matsumura
  • Publication number: 20120154524
    Abstract: A zoom lens system comprising a plurality of lens units including, in order from an object side to an image side, at least a positive first lens unit, a negative second lens unit, and a positive third lens unit, wherein any one of the plurality of lens units includes a lens element having a reflecting surface that bends a light beam incident from an object, in zooming from a wide-angle limit to a telephoto limit at the time of image taking, the first lens unit and the third lens unit do not move along an optical axis, and the conditions: 4.25<?(fW×fT)/tG2<10.00 and fT/fW>2.5 (tG2: a thickness of the second lens unit, fT and fW: focal lengths of the entire system at a telephoto limit and a wide-angle limit) are satisfied; an imaging device; and a camera.
    Type: Application
    Filed: October 8, 2010
    Publication date: June 21, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Yoshio Matsumura, Tsutomu Iwashita, Yoshiaki Kurioka, Shinji Yamaguchi
  • Patent number: 8189074
    Abstract: A zoom lens system is provided that includes a compactly constructed focusing lens unit and that has a suppressed change in the image magnification at the time of movement of a focusing lens unit. The zoom lens system according to the present invention comprises a plurality of lens units and an aperture diaphragm arranged in the lens unit. The plurality of lens units include: a negative lens unit that is arranged on an object side relative to the aperture diaphragm and provided with negative optical power having an absolute value greatest in the entire system and that moves in a direction along an optical axis at the time of zooming; and a focusing lens unit that is arranged in an optical path between the negative lens unit and the aperture diaphragm and that moves in a direction along the optical axis at the time of focusing such that an interval relative to the negative lens unit should vary.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: May 29, 2012
    Assignee: Panasonic Corporation
    Inventors: Kyoichi Miyazaki, Katsu Yamada, Takuya Imaoka, Masaki Sampei, Yoshio Matsumura
  • Publication number: 20120026600
    Abstract: A zoom lens system, in order from an object side to an image side, comprising a first lens unit having positive optical power and at least one subsequent lens unit, wherein an interval between the first lens unit and a lens unit which is one of the at least one subsequent lens unit varies in zooming, and at least one lens element among all the lens elements constituting the lens system satisfies the condition: 0.0002399×vd2?0.0123×vd+0.8157??gF<0 (vd<23) or ?gF>0.66 (23?vd<80), or satisfies the condition: ?0.00325×vd+0.69??gF>0 (?W>77, vd is an Abbe number to the d-line of the lens element constituting the lens system, ?gF is a partial dispersion ratio of the lens element constituting the lens system, ?W is a view angle at a wide-angle limit); an imaging device; and a camera are provided.
    Type: Application
    Filed: July 28, 2011
    Publication date: February 2, 2012
    Applicant: Panasonic Corporation
    Inventor: Yoshio Matsumura
  • Publication number: 20120026601
    Abstract: A zoom lens system, in order from an object side to an image side, comprising a first lens unit having negative optical power and at least one subsequent lens unit, wherein a second lens unit is located closest to the object side in the subsequent lens units, an interval between the first lens unit and a lens unit which is one of the at least one subsequent lens unit varies in zooming, the condition: LT/HT<13.6 (LT is an overall length of lens system at a telephoto limit, HT is an image height at a telephoto limit) is satisfied, and at least one lens element in the second lens unit satisfies the conditions: vd<40, and 0.0002122×vd2?0.01687×vd+1.8157?nd>0 (1.40?nd<1.67) or 0.001181×vd2?0.07563×vd+2.873?nd>0 (1.67?nd<2.50) (vd is an Abbe number to the d-line of the lens element constituting the second lens unit, nd is a refractive index to the d-line of the lens element constituting the second lens unit); an imaging device; and a camera are provided.
    Type: Application
    Filed: July 28, 2011
    Publication date: February 2, 2012
    Applicant: Panasonic Corporation
    Inventor: Yoshio Matsumura
  • Patent number: 8014079
    Abstract: A zoom lens system, in order from an object side to an image side, comprising a first lens unit of positive power, a second lens unit of negative power, a third lens unit of positive power, and a fourth lens unit of positive power, wherein in zooming, the first to the fourth lens units are moved along the optical axis such that the air spaces between the individual lens units should vary, so that magnification change is achieved, and wherein the conditions: ?0.60<M2/fG2<?0.07, ?W?30, and fT/fW?4.5 (M2 is an amount of axial movement of the second lens unit in zooming, fG2 is a composite focal length of the second lens unit, ?W is a half view angle at a wide-angle limit, and fT and fW are focal lengths of the entire system at a telephoto limit and at a wide-angle limit, respectively) are satisfied, an imaging device and a camera are provided.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: September 6, 2011
    Assignee: Panasonic Corporation
    Inventors: Yoshio Matsumura, Nobuyuki Adachi
  • Publication number: 20110085247
    Abstract: A zoom lens system, in order from an object side to an image side, comprising a first lens unit having positive optical power, a second lens unit having negative optical power, a third lens unit having positive optical power, and subsequent lens units including a fourth lens unit having optical power, wherein any one of the first lens unit, the second lens unit, the third lens unit, and the subsequent lens units includes a lens element having a reflecting surface that bends a light beam incident from an object, wherein in zooming from a wide-angle limit to a telephoto limit at the time of image taking, the first lens unit and the third lens unit do not move along an optical axis, and wherein the condition is satisfied: 1.42<nd4ave<1.58 (nd4ave is an average of refractive indices to the d-line of the lens elements constituting the fourth lens unit), an imaging device and a camera are provided.
    Type: Application
    Filed: October 7, 2010
    Publication date: April 14, 2011
    Applicant: PANASONIC CORPORATION
    Inventors: Yoshio MATSUMURA, Tsutomu IWASHITA, Yoshiaki KURIOKA, Shinji YAMAGUCHI
  • Publication number: 20110002049
    Abstract: A zoom lens system, in order from an object side to an image side, comprising a first lens unit of positive power, a second lens unit of negative power, a third lens unit of positive power, and a fourth lens unit of positive power, wherein in zooming, the first to the fourth lens units are moved along the optical axis such that the air spaces between the individual lens units should vary, so that magnification change is achieved, and wherein the conditions: ?0.60<M2/fG2<?0.07, ?W?30, and fT/fW?4.5 (M2 is an amount of axial movement of the second lens unit in zooming, fG2 is a composite focal length of the second lens unit, ?W is a half view angle at a wide-angle limit, and fT and fW are focal lengths of the entire system at a telephoto limit and at a wide-angle limit, respectively) are satisfied, an imaging device and a camera are provided.
    Type: Application
    Filed: July 2, 2010
    Publication date: January 6, 2011
    Applicant: PANASONIC CORPORATION
    Inventors: Yoshio Matsumura, Nobuyuki Adachi
  • Publication number: 20100091172
    Abstract: A zoom lens system is provided that includes a compactly constructed focusing lens unit and that has a suppressed change in the image magnification at the time of movement of a focusing lens unit. The zoom lens system according to the present invention comprises a plurality of lens units and an aperture diaphragm arranged in the lens unit. The plurality of lens units include: a negative lens unit that is arranged on an object side relative to the aperture diaphragm and provided with negative optical power having an absolute value greatest in the entire system and that moves in a direction along an optical axis at the time of zooming; and a focusing lens unit that is arranged in an optical path between the negative lens unit and the aperture diaphragm and that moves in a direction along the optical axis at the time of focusing such that an interval relative to the negative lens unit should vary.
    Type: Application
    Filed: April 1, 2009
    Publication date: April 15, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Kyoichi Miyazaki, Katsu Yamada, Takuya Imaoka, Masaki Sampei, Yoshio Matsumura
  • Patent number: 6194357
    Abstract: Waterborne lubricants comprising: (A) water-soluble inorganic salt; (B) homogeneously dispersed solid lubricant; (C) at least one homogeneously emulsified substance selected from mineral oils, animal and plant oils and fats, and synthetic oils; (D) surfactant; and (E) water, in which the weight ratio (B)/(A) is from 0.05:1 to 2:1 and the weight ratio {C/(A+B)} is from 0.05:1 to 1:1, provide a one-step, highly lubricating waterborne lubricant for use in the cold plastic working of metals. This waterborne lubricant can replace the conversion coating treatment (phosphate, oxalate, etc.)+reactive soap treatment combined lubrication system now in general use and is free of the environmental issues associated with the combined lubrication system, provides for facile coating removal, and is not subject to the decline in seizure resistance caused by nonuniform add-on when large numbers of workpieces are treated together by immersion.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: February 27, 2001
    Assignee: Henkel Corporation
    Inventors: Motoharu Murata, Yoshio Matsumura, Yoshihiko Nishizawa, Takashi Koyama
  • Patent number: 5919529
    Abstract: A plurality of transporter robots are provided on respective rails. Each semiconductor substrate is transported by a first robot from an indexer to processing units and then to a cooling plate. The second robot comes to the cooling plate and transports the substrate to other processing units. The cooling plate is used as an interface for the exchange of the substrate between the robots. No liquids nor gasses are applied to the substrate in the cooling plate and the substrate is passed to the next robot without contamination. No dedicated buffers are required, and thereby the size of the apparatus is reduced.
    Type: Grant
    Filed: February 2, 1996
    Date of Patent: July 6, 1999
    Assignee: Dainippon Screen Mfg. Co., Ltd.
    Inventor: Yoshio Matsumura