Patents by Inventor Takuya Imaoka
Takuya Imaoka 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: 20200201007Abstract: An imaging optical system includes a plurality of lens groups each moving such that spaces between each one of the plurality of lens groups change during a zooming. The imaging optical system conjugates a conjugate point on a magnification side and an intermediate imaging position, and conjugates a conjugate point on a reduction side and the intermediate imaging position. The imaging optical system includes a first lens group located at a furthest place on the magnification side and a rear group in this order from the magnification side toward the reduction side. The first lens group includes a field curvature correction lens group moving along an optical axis when an amount of a field curvature is changed, and a focusing lens group. The imaging optical system satisfies condition (4) below: |{(1??cw2)×?crw2}/{(1??fw2)×?frw2}|<0.Type: ApplicationFiled: March 2, 2020Publication date: June 25, 2020Inventor: Takuya IMAOKA
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Patent number: 10620411Abstract: An imaging optical system includes a plurality of lens groups each moving such that spaces between each one of the plurality of lens groups change during a zooming. The imaging optical system conjugates a conjugate point on a magnification side and an intermediate imaging position, and conjugates a conjugate point on a reduction side and the intermediate imaging position. The imaging optical system includes a first lens group located at a furthest place on the magnification side and a rear group in this order from the magnification side toward the reduction side. The first lens group includes a field curvature correction lens group moving along an optical axis when an amount of a field curvature is changed, and a focusing lens group. The imaging optical system satisfies condition (4) below: |{(1?ßcw2)×ßcrw2}/{(1?ßfw2)×ßfrw2}|<0.Type: GrantFiled: September 21, 2018Date of Patent: April 14, 2020Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventor: Takuya Imaoka
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Publication number: 20190025561Abstract: An imaging optical system includes a plurality of lens groups each moving such that spaces between each one of the plurality of lens groups change during a zooming. The imaging optical system conjugates a conjugate point on a magnification side and an intermediate imaging position, and conjugates a conjugate point on a reduction side and the intermediate imaging position. The imaging optical system includes a first lens group located at a furthest place on the magnification side and a rear group in this order from the magnification side toward the reduction side. The first lens group includes a field curvature correction lens group moving along an optical axis when an amount of a field curvature is changed, and a focusing lens group. The imaging optical system satisfies condition (4) below: |{(1??cw2)×?crw2}/{(1??fw2)×?frw2}|<0.Type: ApplicationFiled: September 21, 2018Publication date: January 24, 2019Inventor: Takuya IMAOKA
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Publication number: 20180284408Abstract: The lens system forms an image conjugately between each of a magnification conjugate point and a reduction conjugate point; and an intermediate image-forming position. The lens system includes a magnification optical system with positive power, the magnification optical system having a plurality of lens elements and positioned closer to the magnification side than the intermediate image-forming position; and a relay optical system with positive power, the relay optical system having a plurality of lens elements and positioned closer to the reduction side than the intermediate image-forming position. The lens system satisfies following conditions (1) and (2). 0.08?fp/fr?0.8??(1) {Ymax?ft·tan(?max)}/{ft·tan(?max)}??0.3??(2) where fr is composite focal length of the relay optical system, fp is composite focal length of the magnification optical system, Ymax is a radius of an effective image diameter, ?max is a maximum half view angle, and ft is the focal length of the lens system.Type: ApplicationFiled: March 6, 2018Publication date: October 4, 2018Inventor: TAKUYA IMAOKA
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Patent number: 10067314Abstract: A lens system which includes a lens group including at least one lens element and forms an image on an image sensor which is rectangular with a first side and a second side greater than or equal to the first side in length, the lens system including: in order from an object side to an image surface side, a front lens group; a diaphragm; and a rear lens group, wherein at least one of the front lens group and the rear lens group includes a freeform surface lens asymmetric about an optical axis, and the lens system satisfies 1<A/(B?C)<10000 and 1<A/(D?E)<10000.Type: GrantFiled: January 11, 2017Date of Patent: September 4, 2018Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventor: Takuya Imaoka
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Patent number: 9835932Abstract: A zoom lens system according to the present disclosure includes a plurality of lens groups each of which is made up of at least one lens element. The zoom lens system includes, in order from an object side to an image side: a first focusing lens group having a negative power; and a second focusing lens group having a positive power, wherein when zooming is performed from a wide end to a telephoto end, the first focusing lens group and the second focusing lens group move along an optical axis, when focusing is performed from an infinity focusing state to a proximity object focusing state, the first focusing lens group and the second focusing lens group move to perform the focusing, and a predetermined condition is satisfied.Type: GrantFiled: January 15, 2016Date of Patent: December 5, 2017Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventor: Takuya Imaoka
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Patent number: 9746651Abstract: A zoom lens system according to the present disclosure includes, in order from an object side to an image plane side, a first lens group having positive optical power; a second lens group having negative optical power; a third lens group having positive optical power; and a subsequent lens group including a fourth lens group, a fifth lens group, and a sixth lens group. The first lens group comprises, in order from the object side, a first lens element having negative optical power; a second lens element having positive optical power; a third lens element having positive optical power; and a fourth lens element having positive optical power. The fifth lens group in the subsequent lens group has negative optical power. The first lens group is fixed with respect to the image plane in zooming from a wide-end to a tele-end upon image shooting.Type: GrantFiled: March 15, 2016Date of Patent: August 29, 2017Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Qinghua Zhao, Yoshiyuki Hisatomi, Takuya Imaoka
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Patent number: 9733451Abstract: A dome camera includes a camera body rotatable and including a lens system and an imaging device, a correction optical system having a curved shape, and a dome cover covering the camera body and the correction optical system. The correction optical system performs at least any one of tilt, decenter, and rotation in accordance with a rotation angle of the camera body.Type: GrantFiled: March 22, 2016Date of Patent: August 15, 2017Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventor: Takuya Imaoka
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Publication number: 20170212334Abstract: A lens system which includes a lens group including at least one lens element and forms an image on an image sensor which is rectangular with a first side and a second side greater than or equal to the first side in length, the lens system including: in order from an object side to an image surface side, a front lens group; a diaphragm; and a rear lens group, wherein at least one of the front lens group and the rear lens group includes a freeform surface lens asymmetric about an optical axis, and the lens system satisfies 1<A/(B?C)<10000 and 1<A/(D?E)<10000.Type: ApplicationFiled: January 11, 2017Publication date: July 27, 2017Inventor: Takuya IMAOKA
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Publication number: 20160274342Abstract: A zoom lens system according to the present disclosure includes, in order from an object side to an image plane side, a first lens group having positive optical power; a second lens group having negative optical power; a third lens group having positive optical power; and a subsequent lens group including a fourth lens group, a fifth lens group, and a sixth lens group. The first lens group comprises, in order from the object side, a first lens element having negative optical power; a second lens element having positive optical power; a third lens element having positive optical power; and a fourth lens element having positive optical power. The fifth lens group in the subsequent lens group has negative optical power. The first lens group is fixed with respect to the image plane in zooming from a wide-end to a tele-end upon image shooting.Type: ApplicationFiled: March 15, 2016Publication date: September 22, 2016Inventors: Qinghua ZHAO, Yoshiyuki HISATOMI, Takuya IMAOKA
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Publication number: 20160209632Abstract: A zoom lens system according to the present disclosure includes a plurality of lens groups each of which is made up of at least one lens element. The zoom lens system includes, in order from an object side to an image side: a first focusing lens group having a negative power; and a second focusing lens group having a positive power, wherein when zooming is performed from a wide end to a telephoto end, the first focusing lens group and the second focusing lens group move along an optical axis, when focusing is performed from an infinity focusing state to a proximity object focusing state, the first focusing lens group and the second focusing lens group move to perform the focusing, and a predetermined condition is satisfied.Type: ApplicationFiled: January 15, 2016Publication date: July 21, 2016Inventor: Takuya IMAOKA
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Patent number: 9398201Abstract: 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 negative optical power, a fifth lens unit having negative optical power; and a sixth lens unit having positive optical power, wherein the condition: 3.5<|f6/f2|<15.5 (f2: a focal length of the second lens unit, f6: a focal length of the sixth lens unit) is satisfied.Type: GrantFiled: April 15, 2015Date of Patent: July 19, 2016Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventor: Takuya Imaoka
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Publication number: 20160205299Abstract: A dome camera includes a camera body rotatable and including a lens system and an imaging device, a correction optical system having a curved shape, and a dome cover covering the camera body and the correction optical system. The correction optical system performs at least any one of tilt, decenter, and rotation in accordance with a rotation angle of the camera body.Type: ApplicationFiled: March 22, 2016Publication date: July 14, 2016Inventor: TAKUYA IMAOKA
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Patent number: 9348125Abstract: A zoom lens system comprising: a negative first lens unit including at least one positive lens element; a positive second lens unit including at least one negative lens element; and subsequent lens units including an aperture diaphragm, wherein the subsequent lens units include a most-image-side lens unit fixed to an image surface in focusing, a first focusing lens unit is provided between the aperture diaphragm and the most-image-side lens unit, and the conditions: 1.0<LSW/{fT×tan(?T)}<2.6 and 0.8<LG1G2/fW<2.8 (LSW: axial distance from aperture diaphragm to image surface at wide-angle limit, fT: focal length of entire system at telephoto limit, ?T: half view angle at telephoto limit, LG1G2; axial distance between most-image-side lens element in first lens unit and most-object-side lens element in second lens unit at wide-angle limit, fW: focal length of entire system at wide-angle limit) are satisfied.Type: GrantFiled: December 20, 2013Date of Patent: May 24, 2016Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventor: Takuya Imaoka
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Patent number: 9250423Abstract: A zoom lens system, in order from an object side to an image side, includes 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 negative optical power, and a subsequent lens unit. The first lens unit includes a negative lens element and a positive lens element. In the zoom lens system, the conditions: 1.47<nd2<1.57 and 60<vd2<75 (nd2: a refractive index to a d-line of the positive lens element, vd2: an Abbe number to a d-line of the positive lens element) are satisfied.Type: GrantFiled: June 13, 2013Date of Patent: February 2, 2016Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Takuya Imaoka, Tsuneo Uchida, Shunichiro Yoshinaga, Masafumi Sueyoshi
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Publication number: 20150237242Abstract: 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 negative optical power, a fifth lens unit having negative optical power; and a sixth lens unit having positive optical power, wherein the condition: 3.5<|f6/f2|<15.5 (f2: a focal length of the second lens unit, f6: a focal length of the sixth lens unit) is satisfied.Type: ApplicationFiled: April 15, 2015Publication date: August 20, 2015Inventor: Takuya IMAOKA
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Publication number: 20150097989Abstract: A zoom lens system comprising: a negative first lens unit; a positive second lens unit; a negative third lens unit; and a positive fourth lens unit, wherein in zooming, the first lens unit moves with locus of a convex to the image side and the second lens unit moves to the object side, and the conditions: 0<(DaW?DaT)/TLW<0.26 and 0<TG2G/TGa11<0.4 (DaW: optical axial interval between the first and second lens units at the wide-angle limit, DaT: optical axial interval between the first and second lens units at the telephoto limit, TLW: overall length of the lens system at the wide-angle limit, TG2G: optical axial thickness of the second lens unit, TGall: sum of optical axial thicknesses of the respective lens units) are satisfied.Type: ApplicationFiled: March 27, 2014Publication date: April 9, 2015Applicant: Panasonic CorporationInventors: Hideki KAI, Takahiro KITADA, Takuya IMAOKA
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Patent number: 8941927Abstract: Compact and lightweight zoom lens systems having less aberration fluctuation in association with focusing, lens barrels, interchangeable lens apparatuses, and camera systems are provided. The zoom lens system comprises: a first lens unit having positive optical power; a first focusing lens unit which is located on an image side relative to the first lens unit, has negative optical power, and moves along an optical axis in zooming and focusing; and a second focusing lens unit which is located on the image side relative to the first focusing lens unit, has positive optical power, and moves along the optical axis in the zooming and the focusing, and satisfies the condition: |d2T/d1T|<1.0 (d1T: an amount of movement of the first focusing lens unit in focusing at a telephoto limit, d2T: an amount of movement of the second focusing lens unit in focusing at a telephoto limit).Type: GrantFiled: November 27, 2013Date of Patent: January 27, 2015Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Shunichiro Yoshinaga, Isamu Izuhara, Kyoichi Miyazaki, Takuya Imaoka
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Patent number: 8934177Abstract: A zoom lens system wherein a positive lens unit located closest to an object side is fixed with respect to an image surface in zooming, a negative lens unit, among lens units located on an image side relative to an aperture diaphragm, is a focusing lens unit which moves along an optical axis in focusing, and the conditions: ?1.8<fn/fW<?0.3 and 0.1<T1/fW<1.5 (fn: a composite focal length of the negative lens unit, T1: an axial thickness of the positive lens unit located closest to the object side, fW: a focal length of the entire system at a wide-angle limit) are satisfied.Type: GrantFiled: January 24, 2013Date of Patent: January 13, 2015Assignee: Panasonic Intellectual Property Managment Co., LtdInventors: Takuya Imaoka, Kyoichi Miyazaki
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Patent number: 8873145Abstract: 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 second lens unit is, in order from the object side to the image side, composed of an object-side second lens unit and an image-side second lens unit, the image-side second lens unit moves in a direction perpendicular to an optical axis to optically compensate image blur, and the condition: 1<|f2I/fW|<10 (f2I: a composite focal length of the image-side second lens unit, fW: a focal length of the entire system at a wide-angle limit) is satisfied.Type: GrantFiled: January 30, 2013Date of Patent: October 28, 2014Assignee: Panasonic CorporationInventor: Takuya Imaoka