Patents by Inventor Keiki Yoshitsugu

Keiki Yoshitsugu 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: 9118907
    Abstract: An imaging device in the present disclosure includes: an imaging unit including an imaging optical system configured to form an image of an object and an imaging element configured to convert an optical image formed by the imaging optical system into an image signal and output the image signal; a distance-measuring section configured to obtain distance information of the object; an image display section configured to display an image of the image signal; an object recording section configured to previously register and record an object to be shot; and a distance designation section configured to designate a distance at which the object is to be shot. The imaging optical system performs a focusing operation for the distance designated by the distance designation section. The imaging unit performs shooting exposure when the object recorded previously by the object recording section is located at the distance designated by the distance designation section.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: August 25, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Michihiro Yamagata, Kenichi Hayashi, Keiki Yoshitsugu
  • Patent number: 9110508
    Abstract: An electronic device presents, to the user, a realistic control feel in response to a complicated operation such as an operation using multiple fingers. An electronic device 10 includes a touch panel 11 to be touched by the user, a vibrating section 13 for vibrating the touch panel 11, and a vibration control section 33 for controlling the vibration of the vibrating section 13. The vibration control section 33 changes the vibration of the vibrating section 13 when, after the user touches the touch panel 11 with multiple fingers, the user lifts at least one of the multiple fingers off the touch panel 11 with at least one other of the multiple fingers remaining on the touch panel 11.
    Type: Grant
    Filed: January 21, 2013
    Date of Patent: August 18, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Akira Koga, Keiki Yoshitsugu
  • Patent number: 8743185
    Abstract: A stereoscopic imaging optical system having a function to adjust a stereo base, an imaging device that includes the stereoscopic imaging optical system, and a camera that includes the imaging device, are provided. The stereoscopic imaging optical system includes two imaging lens systems arranged in parallel, and two diaphragms arranged in the imaging lens systems, respectively. At least one of the diaphragms is decentered with respect to an optical axis to adjust the stereo base. Further, a condition (1.8?SBmax/(fT×tan(?T))?45, where SBmax is a maximum value of the stereo base, fT is a focal length of the optical system at a telephoto limit, and ?T is a half view angle (°) at the telephoto limit) is satisfied.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: June 3, 2014
    Assignee: Panasonic Corporation
    Inventors: Shinji Yamaguchi, Michihiro Yamagata, Keiki Yoshitsugu
  • Patent number: 8610798
    Abstract: A zoom lens system comprises: a negative first lens unit being composed of two lens elements; a positive second lens unit; and a positive third lens unit, wherein the lens units are moved such that an interval between the first lens unit and the second lens unit decreases and an interval between the second lens unit and the third lens unit increases in zooming, so that magnification change is achieved, wherein the first lens unit is composed of a negative first lens element and a positive second lens element, and wherein the condition is satisfied: 0.50<fL2/fT<1.00 where, Z=fT/fW>4.0, ?W>35, fL2: a focal length of the second lens element, fT, fW: focal lengths of the entire system at a telephoto limit, a wide-angle limit, ?W: a half view angle at a wide-angle limit.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: December 17, 2013
    Assignee: Panasonic Corporation
    Inventors: Keiki Yoshitsugu, Takakazu Bito
  • Patent number: 8559116
    Abstract: A zoom lens system of the present invention has a plurality of lens units each composed of at least one lens element and, in order from the object side to the image side, comprises: a first lens unit having negative optical power and composed of two lens elements; a second lens unit having positive optical power; and a third lens unit having positive optical power, wherein in zooming, the lens units are moved such that an interval between the first lens unit and the second lens unit should decrease and that an interval between the second lens unit and the third lens unit should increase, so that magnification change is achieved, and wherein the condition is satisfied: 2.50<tan(?W)×Z<6.00 where, Z=fT/fW>4.0, ?W>35, fT, fW: focal lengths of the entire system at a telephoto limit, a wide-angle limit, ?W: a half value of maximum view angle at a wide-angle limit.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: October 15, 2013
    Assignee: Panasonic Corporation
    Inventors: Takakazu Bito, Keiki Yoshitsugu
  • Patent number: 8537268
    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 positive optical power, and a fourth lens unit having positive optical power, wherein in zooming, the intervals between the respective lens units vary, the third lens unit comprises a plurality of lens elements, and the condition (I-1): 0.47<|f31/fG3|<1.00 (fT/fW>2.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: September 17, 2013
    Assignee: Panasonic Corporation
    Inventors: Tomoko Iiyama, Keiki Yoshitsugu
  • Patent number: 8488252
    Abstract: A high-performance zoom lens system which is compact and has a wide view angle at a wide-angle limit and a high zooming ratio in a balanced manner, 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 a fourth lens unit having positive optical power, wherein the first lens unit is composed of at most two lens elements, the second lens unit is composed of two lens elements, the third lens unit is composed of three lens elements, in order from the object side to the image side, including an object side lens element having positive optical power, a lens element having negative optical power, and an image side lens element having positive optical power, and the conditions: ?W?36 and fT/fW>4.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: July 16, 2013
    Assignee: Panasonic Corporation
    Inventor: Keiki Yoshitsugu
  • Patent number: 8462442
    Abstract: A high-performance zoom lens system which is compact and has a wide view angle at a wide-angle limit and a high zooming ratio in a balanced manner, 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 a fourth lens unit having positive optical power, wherein the first lens unit is composed of at most two lens elements, the second lens unit is composed of two lens elements, the third lens unit is composed of three lens elements, and the condition: nd>1.75 (nd: a refractive index to the d-line of each lens element constituting the zoom lens system) is satisfied; an imaging device; and a camera are provided.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: June 11, 2013
    Assignee: Panasonic Corporation
    Inventor: Keiki Yoshitsugu
  • Patent number: 8462443
    Abstract: A high-performance zoom lens system which is compact and has a wide view angle at a wide-angle limit and a high zooming ratio in a balanced manner, 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 a fourth lens unit having positive optical power, wherein the first lens unit is composed of at most two lens elements, the second lens unit is composed of two lens elements, the third lens unit is composed of three lens elements, in order from the object side to the image side, including an object side lens element having positive optical power, a lens element having negative optical power, and an image side lens element having positive optical power, and the conditions: fT/fW>6.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: June 11, 2013
    Assignee: Panasonic Corporation
    Inventor: Keiki Yoshitsugu
  • Patent number: 8446520
    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 positive optical power, and a fourth lens unit having positive optical power, wherein in zooming, the intervals between the respective lens units vary, and the condition (I-1): 2?W/FW?34 (fT/fW>2.0, ?W: a half view angle (°) at a wide-angle limit, FW: an F-number at a wide-angle limit, fT: a focal length of the entire system at a telephoto limit, fW: a focal length of the entire system at a wide-angle limit) is satisfied, having a high resolution and a short overall optical length (overall length of lens system), and still having a view angle of 70° or greater at a wide-angle limit, which is satisfactorily adaptable for wide-angle image taking, and yet having a large aperture with an F-number of about 2.0 at a wide-angle limit; an imaging device; and a camera.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: May 21, 2013
    Assignee: Panasonic Corporation
    Inventors: Tomoko Iiyama, Keiki Yoshitsugu
  • Patent number: 8432618
    Abstract: A zoom lens system according to the present invention, from an object side, comprises 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 a fourth lens unit having positive optical power. In zooming, the first to the fourth units all move along the optical axis. The third lens unit is composed of three or more lens elements. The condition (6): nd8?1.5 and vd8?75 and the condition (7): (nd9?1)+(nd10?1)?1.55 are satisfied (where, 16<fT/fW, ?>35, and in the third lens unit: nd8, nd9, nd10 are refractive indices to the d-line of the lens elements located on the most object side and at the second and the third positions from the object side; vd8 is an Abbe number to the d-line of the lens element on the most object side; ? is a half view angle at a wide-angle limit; fT is a focal length of the entire system at a telephoto limit; and fW is a focal length of the entire system at a wide-angle limit).
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: April 30, 2013
    Assignee: Panasonic Corporation
    Inventors: Keiki Yoshitsugu, Katsu Yamada, Shunichiro Yoshinaga
  • Patent number: 8432616
    Abstract: A zoom lens system has a plurality of lens units each composed of at least one lens element and, in order from the object side to the image side, comprises: a negative first lens unit being composed of two lens elements; a positive second lens unit; and a positive third lens unit, wherein in zooming from a wide-angle limit to a telephoto limit during image taking, the individual lens units are moved along an optical axis such that an interval between the first lens unit and the second lens unit decreases and that an interval between the second lens unit and the third lens unit increases, so that magnification change is achieved, and wherein on the image side relative to the second lens unit, an aperture diaphragm is arranged that moves along the optical axis integrally with the second lens unit during zooming.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: April 30, 2013
    Assignee: Panasonic Corporation
    Inventors: Keiki Yoshitsugu, Takakazu Bito
  • Patent number: 8427756
    Abstract: A zoom lens system has a plurality of lens units each composed of at least one lens element and, in order from the object side to the image side, comprises: a negative first lens unit being composed of two lens elements; a positive second lens unit; and a positive third lens unit, wherein in zooming from a wide-angle limit to a telephoto limit during image taking, the individual lens units are moved along an optical axis such that an interval between the first lens unit and the second lens unit decreases and that an interval between the second lens unit and the third lens unit increases, so that magnification change is achieved, and wherein on the image side relative to the second lens unit, an aperture diaphragm is arranged that moves along the optical axis integrally with the second lens unit during zooming.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: April 23, 2013
    Assignee: Panasonic Corporation
    Inventors: Keiki Yoshitsugu, Takakazu Bito
  • Patent number: 8395848
    Abstract: A zoom lens system of the present invention has a plurality of lens units each composed of at least one lens element and, in order from the object side to the image side, comprises: a first lens unit having negative optical power and composed of two lens elements; a second lens unit having positive optical power; and a third lens unit having positive optical power, wherein in zooming, at least the first lens unit and the second lens unit move along an optical axis, on the image side relative to the second lens unit, an aperture diaphragm is arranged that moves along the optical axis integrally with the second lens unit during zooming, the second lens unit is, in order from the object side to the image side, composed of a first cemented lens element by cementing two lens elements and a second cemented lens element by cementing two lens elements, and the condition is satisfied: 2.00<fG2a/fG2b<3.00 where, fG2a, fG2b: focal lengths of the first and second cemented lens elements.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: March 12, 2013
    Assignee: Panasonic Corporation
    Inventors: Keiki Yoshitsugu, Takakazu Bito
  • Publication number: 20130027605
    Abstract: A zoom lens system has a plurality of lens units each composed of at least one lens element and, in order from the object side to the image side, comprises: a negative first lens unit being composed of two lens elements; a positive second lens unit; and a positive third lens unit, wherein in zooming from a wide-angle limit to a telephoto limit during image taking, the individual lens units are moved along an optical axis such that an interval between the first lens unit and the second lens unit decreases and that an interval between the second lens unit and the third lens unit increases, so that magnification change is achieved, and wherein on the image side relative to the second lens unit, an aperture diaphragm is arranged that moves along the optical axis integrally with the second lens unit during zooming.
    Type: Application
    Filed: September 5, 2012
    Publication date: January 31, 2013
    Applicant: Panasonic Corporation
    Inventors: Keiki Yoshitsugu, Takakazu Bito
  • Publication number: 20130027586
    Abstract: A zoom lens system has a plurality of lens units each composed of at least one lens element and, in order from the object side to the image side, comprises: a negative first lens unit being composed of two lens elements; a positive second lens unit; and a positive third lens unit, wherein in zooming from a wide-angle limit to a telephoto limit during image taking, the individual lens units are moved along an optical axis such that an interval between the first lens unit and the second lens unit decreases and that an interval between the second lens unit and the third lens unit increases, so that magnification change is achieved, and wherein on the image side relative to the second lens unit, an aperture diaphragm is arranged that moves along the optical axis integrally with the second lens unit during zooming.
    Type: Application
    Filed: September 5, 2012
    Publication date: January 31, 2013
    Applicant: PANASONIC CORPORATION
    Inventors: Keiki Yoshitsugu, Takakazu Bito
  • Publication number: 20130021501
    Abstract: A zoom lens system comprises: a negative first lens unit being composed of two lens elements; a positive second lens unit; and a positive third lens unit, wherein the lens units are moved such that an interval between the first lens unit and the second lens unit decreases and an interval between the second lens unit and the third lens unit increases in zooming, so that magnification change is achieved, wherein the first lens unit is composed of a negative first lens element and a positive second lens element, and wherein the condition is satisfied: 0.50<fL2/fT<1.00 where, Z=fT/fW>4.0, ?w>35, fL2: a focal length of the second lens element, fT, fW: focal lengths of the entire system at a telephoto limit, a wide-angle limit, ?w: a half view angle at a wide-angle limit.
    Type: Application
    Filed: September 5, 2012
    Publication date: January 24, 2013
    Applicant: PANASONIC CORPORATION
    Inventors: Keiki Yoshitsugu, Takakazu Bito
  • Patent number: 8325250
    Abstract: A zoom lens system of the present invention has a plurality of lens units each composed of at least one lens element and, in order from the object side to the image side, comprises: a first lens unit having negative optical power and composed of two lens elements; a second lens unit having positive optical power; and a third lens unit having positive optical power, wherein in zooming, the lens units are moved such that an interval between the first lens unit and the second lens unit should decrease and that an interval between the second lens unit and the third lens unit should increase, so that magnification change is achieved, wherein the first lens unit is, in order from the object side to the image side, composed of a first lens element having negative optical power and a second lens element having positive optical power, and wherein the condition is satisfied: 0.50<fL2/fT<1.00 where, Z=fT/fW>4.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: December 4, 2012
    Assignee: Panasonic Corporation
    Inventors: Keiki Yoshitsugu, Takakazu Bito
  • Patent number: 8325425
    Abstract: A high-performance zoom lens system which is compact and has a wide view angle at a wide-angle limit and a high zooming ratio in a balanced manner, 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 a fourth lens unit having positive optical power, wherein the first lens unit is composed of at most two lens elements, the second lens unit is composed of two lens elements, the third lens unit is composed of three lens elements, in order from the object side to the image side, including an object side lens element having positive optical power, a lens element having negative optical power, and an image side lens element having positive optical power, and the conditions: ?2.0<f2/fW<?1.1, fT/fW>6.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: December 4, 2012
    Assignee: Panasonic Corporation
    Inventor: Keiki Yoshitsugu
  • Patent number: 8325424
    Abstract: A high-performance zoom lens system which is compact and has a wide view angle at a wide-angle limit and a high zooming ratio in a balanced manner, 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 a fourth lens unit having positive optical power, wherein the first lens unit is composed of at most two lens elements, the second lens unit is composed of two lens elements, the third lens unit is composed of three lens elements, in order from the object side to the image side, including an object side lens element having positive optical power, a lens element having negative optical power, and an image side lens element having positive optical power, and the conditions: ?2.3<f2/fW<?1.5, ?W?36 and fT/fW>4.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: December 4, 2012
    Assignee: Panasonic Corporation
    Inventor: Keiki Yoshitsugu