With Variable Magnification (e.g., Zoom Type) Patents (Class 359/676)
  • Patent number: 11327279
    Abstract: A zoom optical system comprises, in order from an object side: a first lens group having positive refractive power; a front-side lens group; an intermediate lens group having positive refractive power; and a rear-side lens group. The front-side lens group is composed of one or more lens groups and has a negative lens group. At least part of the intermediate lens group is a focusing lens group. The rear-side lens group is composed of one or more lens groups. Upon zooming, distances between the first lens group and the front-side lens group, between the front-side lens group and the intermediate lens group, and between the intermediate lens group and the rear-side lens group change. At least one of the following conditional expressions is satisfied: 0.010<fF/fXR<10.000 2.250<TLW/ZD1<10.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: May 10, 2022
    Assignee: Nikon Corporation
    Inventors: Satoru Shibata, Tomoyuki Sashima
  • Patent number: 11320649
    Abstract: The present invention concerns an objective (10) for imaging an object field of view of 10° onto an imager (12), the objective (10) comprising in order of the propagating direction: —a first lens unit (U1) comprising several lenses, the first lens unit (U1) having a positive first focal length and a first dimension inferior to 15 millimeters, —a bending mirror (M) adapted to bend at a 90° angle, —a liquid lens (LL), and —a second lens unit (U2) comprising several lenses, the second lens unit (U2) having a positive second focal length and a second dimension, the ratio between the first focal length and the second focal length being comprised between 1.0 and 2.0 and the ratio between the first dimension and the second dimension being superior or equal to 2.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: May 3, 2022
    Assignees: GENSIGHT BIOLOGICS, Sorbonne Université, Centre National de la Recherche Scientifique, INSTITUT NATIONAL DE LA SANTE ET DE LA RECHERCHE MEDICALE (INSERM)
    Inventors: Joël Chavas, Guillaume Chenegros, Charlie Galle
  • Patent number: 11314064
    Abstract: Provided is a zoom lens including, in order from an object side to an image side, a positive first lens unit, a negative second lens unit, a positive third lens unit, a positive fourth lens unit and a rear lens group consisting of at least one lens unit. An interval between each pair of adjacent lens units is changed during zooming. The rear lens group includes a negative N-th lens unit configured to move during focusing. The second lens unit and the third lens unit are configured to move during zooming. A focal length of the second lens unit, a focal length of the third lens unit, a focal length of the fourth lens unit, a lateral magnification of the fourth lens unit at a wide angle end and a lateral magnification of the fourth lens unit at a telephoto end are appropriately set.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: April 26, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kohei Kimura, Takahiro Hatada
  • Patent number: 11249290
    Abstract: Provided is a zoom lens including, in order from an object side to an image side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power, and a fourth lens unit having a negative refractive power. In the zoom lens, an interval between each pair of adjacent lens units is changed during zooming, and the first lens unit is configured not to move for zooming. Further, a total length DT of the zoom lens at a telephoto end, a focal length fT of the zoom lens at the telephoto end, a distance BW of a back focus at a wide-angle end, a total length DW of the zoom lens at the wide-angle end, and a focal length f3 of the third lens unit are each appropriately set.
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: February 15, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Koji Aoki
  • Patent number: 11209649
    Abstract: The disclosed optical lens assemblies may include a deformable optical element including a substantially transparent transducer configured to deform, and thus change at least one optical property of, the deformable optical element. At least a portion of the substantially transparent transducer may be positioned within a substantially transparent optical aperture of the optical lens assembly. Various head-mounted displays incorporating such an optical lens assembly, and methods of fabricating the same, are also disclosed.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: December 28, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Katherine Marie Smyth, John M. Cooke, Andrew John Ouderkirk, Karol Constantine Hatzilias
  • Patent number: 11209662
    Abstract: The imaging lens consists of, in order from an object side, a first lens group, a stop, a positive second lens group, and a negative third lens group. The second lens group includes a negative lens and a positive lens. During focusing, the second lens group moves, and the third lens group does not move. Image blur correction is performed by moving the entire third lens group or a part of the third lens group in the direction intersecting the optical axis.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: December 28, 2021
    Assignee: FUJIFILM Corporation
    Inventor: Takashi Suzuki
  • Patent number: 11169429
    Abstract: An optical system is provided, including a light path adjustment module, an optical element driving module and a light flux adjustment module, The light path adjustment module is used for receiving light traveling in a first direction and adjusting the path of the light. The optical element driving module is used for receiving light. The light flux adjustment module is used for adjusting the light flux of the light, wherein the light flux adjustment module is disposed between the light path adjustment module and the optical element driving module.
    Type: Grant
    Filed: January 13, 2020
    Date of Patent: November 9, 2021
    Assignee: TDK TAIWAN CORP.
    Inventors: Chao-Hsi Wang, Chao-Chang Hu, Chih-Wei Weng, Sin-Jhong Song
  • Patent number: 11163141
    Abstract: Compact folded lens systems are described that may be used in small form factor cameras. Lens systems are described that may include three lens elements with refractive power, with a light folding element such as a prism, located between a first lens element on the object side of the lens system and a second lens element, that redirects the light refracted from the first lens element from a first axis onto a second axis on which the other lens elements and a photosensor are arranged. The lens systems may include an aperture stop located behind the front vertex of the lens system, for example at the first lens element, and an optional infrared filter, for example located between the last lens element and a photosensor.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: November 2, 2021
    Assignee: Apple Inc.
    Inventors: Yuhong Yao, Yoshikazu Shinohara
  • Patent number: 11150451
    Abstract: A zoom optical system (ZL) comprises a first negative lens group (G2) having a negative refractive power; and a second negative lens group (G4) disposed closer to an image than the first negative lens group (G2), wherein a distance between the first negative lens group (G2) and the second negative lens group (G4) changes during zooming, at least part of the first negative lens group (G2) is movable so as to have a displacement component in a direction perpendicular to an optical axis, at least part of the second negative lens group (G4) is movable along the optical axis during focusing, and the following conditional expression, 0.50<fGb/fGa<2.60 is satisfied, where, fGa: a focal length of the first negative lens group (G2), and fGb: a focal length of the second negative lens group (G4).
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: October 19, 2021
    Assignee: Nikon Corporation
    Inventors: Takeshi Umeda, Tomoki Ito, Atsushi Shibayama
  • Patent number: 11150442
    Abstract: A zoom lens system includes, in order from an object side to an image side: a first lens group having positive power; a second lens group having negative power; a third lens group having positive power; a fourth lens group having negative power; a fifth lens group having positive power; and a sixth lens group having power. During zooming from wide angle extremity to telephoto extremity, the distance between respective lens groups changes. The fifth lens group is composed of at most two lens elements, at least one of which is a concave meniscus lens element having a convex surface facing the object side.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: October 19, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Genki Nakazawa
  • Patent number: 11150438
    Abstract: A camera module includes a solid state lens that flexes, in response to electrical signals. A lens barrel holds the lens on the optical axis. A lens barrel holder holds the lens barrel above an image sensor. The lens barrel holder includes electrically conductive interconnects between a bottom and a top end of the lens barrel holder. The conductive interconnects are not exposed to an exterior of the lens barrel holder. The camera module includes two or more respective lower electrically conductive connections in proximity to the interconnects and connecting the electrically conductive interconnects to respective conductors for the one or more electrical signals. The camera module includes two or more upper conductive connections configured to electrically connect the solid state lens to respective ones of the two or more conductive interconnects.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: October 19, 2021
    Assignee: Apple Inc.
    Inventors: Ya Wen Hsu, Pierre-Jean Y. Parodi-Keravec, Steven Webster
  • Patent number: 11092787
    Abstract: Provided are an optical lens assembly and an electronic apparatus including the optical lens assembly. The optical lens assembly includes a first lens group having positive refractive power, a stop, and a second lens group having positive refractive power that are arranged from an object side to an image side. The first lens group includes a first lens having negative refractive power and a meniscus shape convex toward the object side, a second lens having negative refractive power, and at least one other lens. The second lens group includes at least three lenses, and a lens of the second lens group closest to the image side has at least one inflection point.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: August 17, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-woo Kim, Tae-kun Lee
  • Patent number: 11073754
    Abstract: A projection optical system has a first optical system and a second optical system. The first and second optical systems are disposed in order from a demagnification side toward a magnification side. An intermediate image is formed between a demagnification-side imaging surface and a magnification-side imaging surface. The second optical system is an optical element having a first transmission surface, reflecting surface, and second transmission surface in order from the demagnification side toward the magnification side. The first transmission surface and reflecting surface are located at one side, and the second transmission surface is located at the other side with respect to the optical axis. The reflecting surface has a concavely curved surface shape. The second transmission surface has a convexly curved surface shape protruding toward the magnification side. The optical element has a first member and a second member different in refractive index.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: July 27, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Hirotaka Yanagisawa, Eiji Morikuni
  • Patent number: 11073741
    Abstract: A zoom lens includes a plurality of lens units, in which a distance between adjacent lens units changes during zooming, a first aperture stop, and a second aperture stop disposed on an image side of the first aperture stop. An aperture diameter of the first aperture stop determines an F-number of the zoom lens at a wide-angle end. The plurality of lens units includes a negative lens unit having a negative refractive power that is disposed on the image side of the first aperture stop and on an object side of the second aperture. An aperture diameter of the second aperture stop changes during the zooming. The aperture diameter of the second aperture stop at the wide-angle end is larger than the aperture diameter of the second aperture stop at a telephoto end.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: July 27, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Yuichi Gyoda
  • Patent number: 11061211
    Abstract: A bimodal zoom lens includes three coaxially aligned lenses including a first lens, a third lens, and a second lens therebetween. The first lens is a negative lens, each of the second lens and the third lens is a positive lens. The three coaxially aligned lenses form (i) a first configuration when the second lens and the first lens are separated by an axial distance L11 and (ii) a second configuration when the second lens and the first lens are separated by an axial distance L12, which exceeds axial distance L11. The second configuration has a second effective focal length that exceeds a first effective focal length of the first configuration.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: July 13, 2021
    Assignee: OmniVision Technologies, Inc.
    Inventors: Tingyu Cheng, Jau-Jan Deng
  • Patent number: 11054615
    Abstract: Provided are an optical lens assembly and an electronic apparatus including the same, according to various embodiments. The optical lens assembly includes a bending portion including a reflection surface for reflecting light and at least one surface having a refractive power, and a plurality of lenses arranged between the bending portion and an image plane. Other embodiments are possible.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: July 6, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Ki-woo Lee
  • Patent number: 11009677
    Abstract: A zoom lens including, in order from an object side: a first positive lens unit; a second negative lens unit; a third positive lens unit; a fourth negative lens unit; and a fifth positive lens unit, wherein during zooming from a wide angle end, intervals between the adjacent lens units are changed in such a way that the second lens unit is configured to move from the object side to the image side and the third lens unit and the fourth lens unit are configured to move, and a focal length of the third lens unit, a focal length of the fourth lens unit, a movement amount of the second lens unit during zooming from the wide angle end to the telephoto end, and a movement amount of the third lens unit during zooming from the wide angle end to the telephoto end are appropriately set.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: May 18, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Hirofumi Abe
  • Patent number: 10955644
    Abstract: A zoom optical system includes a front-side lens unit, an intermediate lens unit, and a rear-side lens unit. The front-side lens unit includes a first front unit and a second front unit, and a distance between the first front unit and the second front unit is wider at a telephoto end than at a wide angle end. The intermediate lens unit includes a first intermediate unit and a second intermediate unit, and a distance between the first intermediate unit and the second intermediate unit is narrower at the telephoto end than at the wide angle end. A distance between the second intermediate unit and a lens unit adjacent to the second intermediate unit varies. The second intermediate unit moves at the time of focusing, and the following conditional expressions (1) and (2) are satisfied: 0.9?LTLT/LTLW?1.17??(1) 4.2?KMBT?20.0??(2).
    Type: Grant
    Filed: December 23, 2018
    Date of Patent: March 23, 2021
    Assignee: OLYMPUS CORPORATION
    Inventors: Kazuteru Kawamura, Yasuharu Yamada, Toyoki Kon, Yuki Kubota
  • Patent number: 10948708
    Abstract: The objective optical system for an endoscope includes a negative front group, an aperture stop, and a positive rear group that are arranged in this order from an object side. The front group includes only a cemented lens in which a negative first lens, a negative second lens, and a positive third lens are cemented in this order from the object side, as a lens. The rear group includes only a cemented lens in which include a positive fourth lens, a positive fifth lens, and a negative sixth lens are cemented in this order from the object side, as a lens. Conditional expressions are satisfied.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: March 16, 2021
    Assignee: FUJIFILM Corporation
    Inventor: Tomoyuki Baba
  • Patent number: 10928799
    Abstract: Systems, methods, and apparatus are disclosed for machining a part. Methods include generating a first spatial representation identifying a first orientation of a machining tool, and mechanically coupling an end effector to the part at a first position, the end effector including the machining tool and a coupling tool. Methods include generating a second spatial representation identifying a second orientation of the machining tool relative to the part, the first and second spatial representations being generated based on images captured by at least one imaging device and measurements from a plurality of sensors. Methods include identifying a plurality of differences that result from the coupling and that include a rotational distance and translational distance, the identifying being based on a comparison of a first image and a second image. Methods include adjusting the machining tool to return the machining tool to the first orientation at the first position.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: February 23, 2021
    Assignee: The Boeing Company
    Inventors: Luke Fletcher, Phillip J. Crothers
  • Patent number: 10914935
    Abstract: The objective optical system includes a first lens group having a positive refractive power, a second lens group having a negative refractive power, and a third lens group having a positive refractive power. Focusing is carried out by moving the second lens group. The third lens group includes a positive lens and a cemented lens, and the cemented lens includes a positive lens and a negative lens. A first sub-unit includes a lens positioned on the object side of a predetermined air space and a second sub-lens group includes a lens positioned on an image side of the predetermined air space. The predetermined air space is the maximum air space among the air spaces in the third lens group.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: February 9, 2021
    Assignee: OLYMPUS CORPORATION
    Inventor: Hideyasu Takato
  • Patent number: 10908398
    Abstract: A variable focal length lens device includes: a lens system whose refractive index changes in accordance with an inputted drive signal; and a resonance-lock controller that locks the drive signal to a resonance frequency of the lens system. The resonance-lock controller tunes a frequency of the drive signal to a peak position of a voltage-current phase difference between a voltage of the drive signal and a drive current of the lens system, and raises or lowers the frequency of the drive signal in accordance with the drive current when the voltage-current phase difference changes.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: February 2, 2021
    Assignee: MITUTOYO CORPORATION
    Inventors: Shiro Igasaki, Nobuo Ohba, Yuki Kurahashi
  • Patent number: 10901187
    Abstract: An optical imaging lens including a first lens element to an eighth lens element arranged in sequence from an object side to an image side along an optical axis is provided. The first lens element has positive refracting power. At least one of the object-side surface and the image-side of the second lens element is an aspheric surface. At least one of the object-side surface and the image-side of the third lens element is an aspheric surface. At least one of the object-side surface and the image-side of the fourth lens element is an aspheric surface. The object-side surface and the image-side of the fifth lens element are both aspheric surfaces. The object-side surface and the image-side of the sixth lens element are both aspheric surfaces. An optical axis region of the image-side surface of the seventh lens element is concave. An optical axis region of the object-side surface of the eighth lens element is concave.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: January 26, 2021
    Assignee: GENIUS ELECTRONIC OPTICAL (XIAMEN) CO., LTD.
    Inventors: Jia-Sin Jhang, Maozong Lin, Feng Li
  • Patent number: 10866385
    Abstract: An optical system is provided and includes a fixed part, a first optical member holder, a second optical member holder and a first driving assembly. The first optical member holder is configured to hold a first optical member and is disposed over the fixed part. The second optical member holder is configured to hold a second optical member and is movably connected to the first optical member holder. The first driving assembly is configured to drive the first optical member holder to move relative to the fixed part.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: December 15, 2020
    Assignee: TDK Taiwan Corp.
    Inventors: Chao-Chang Hu, Chih-Wei Weng, Shao-Kuang Huang, Sin-Jhong Song
  • Patent number: 10824059
    Abstract: A first optical group that forms an intermediate image and a second optical group that enlarges and projects the intermediate image formed by the first optical group satisfy a variety of conditions. Therefore, the overall length of the entire lens system of the projection system is reduced in a linear arrangement, or the distance between the first optical group and the second optical group is increased and an optical path deflector that deflects the optical path is disposed at the middle of the optical path between the first and second optical groups to fold the optical path.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: November 3, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Nobutaka Minefuji
  • Patent number: 10816777
    Abstract: In the imaging optical system that consists of a first optical system and a second optical system in order from a magnified side, and has an intermediate image formed between the first optical system and the second optical system, a focus group moving during focusing is included between a most magnified side of the first optical system and a position at which a principal ray of light having a maximum angle of view and an optical axis of the first optical system intersect each other, and a predetermined conditional expression relating to the focus group is satisfied.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: October 27, 2020
    Assignee: FUJIFILM Corporation
    Inventor: Masaru Amano
  • Patent number: 10802241
    Abstract: A lens apparatus includes a fixed barrel, a first optical element, a rotary barrel configured to be rotated relative to the fixed barrel about an optical axis of the first optical element and move the first optical element; a contact member including rolling members respectively arranged at positions about the optical axis. The rolling members are in contact with the rotary barrel. The contact member is restricted in rotation relative to the fixed barrel about the optical axis. A pressing member presses the contact member toward the rotary barrel. A second optical element is different from the first optical element. An operation member is configured to be rotated relative to the fixed barrel about the optical axis and move the second optical element. A space, through which the operation member passes, is formed between two of the rolling elements in a circumference of the contact member.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: October 13, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Takeru Yuri
  • Patent number: 10768476
    Abstract: A display device is provided. The display device includes a display panel including a light-exiting side, and a birefringent structure disposed at the light-exiting side of the display panel. A plane of the birefringent structure is parallel to a plane of the display panel. When the display device is in a display stage, the birefringent structure and the display panel are configured with a relative rotation at a plane parallel to the plane of the birefringent structure.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: September 8, 2020
    Assignee: SHANGHAI TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Yingteng Zhai, Jialing Li
  • Patent number: 10768396
    Abstract: A zoom lens includes a front unit having a negative refractive power; and a rear unit having a positive refractive power, which includes an aperture stop. The front unit includes a first negative refractive power lens, a second negative refractive power lens, and a third positive refractive power lens. The first lens is nearest to an object, and has a meniscus shape with a convex surface directed toward the object side, and the second lens is on an image side of the first lens, and has a meniscus shape with a convex surface directed toward the object side. The rear unit includes a first lens unit A and a second lens unit B, wherein when zooming from a wide angle end to a telephoto end, a distance between the front unit and the rear unit narrows, and a distance between the first lens unit A and the second lens unit B changes. The first lens unit A includes a first sub-lens unit having a positive refractive power, the aperture stop, and a second sub-lens unit.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: September 8, 2020
    Assignee: OLYMPUS CORPORATION
    Inventors: Kazuteru Kawamura, Takashi Fujikura, Kenichi Nagasawa, Masaru Morooka
  • Patent number: 10746975
    Abstract: An objective lens for a still or film camera includes a first and second lens-element arrangement, and a wavefront manipulator. The first and second lens-element arrangement are spaced mutually apart along an optical axis of the lens such that an interstice is present therebetween. The wavefront manipulator is in the interstice and includes two optical components displaceable counter to one another, perpendicular to the optical axis, and which each include a free-form surface. The wavefront manipulator has a zero position, wherein the optical components do not cause any image aberrations in the imaging properties of the objective lens, and effective positions, wherein the optical components are displaced counter to one another, out of the zero position perpendicular to the optical axis, and wherein the optical components cause a spherical aberration in the imaging properties of the objective lens.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: August 18, 2020
    Assignees: Carl Zeiss AG, Carl Zeiss Microscopy GmbH
    Inventors: Marco Pretorius, Vladan Blahnik
  • Patent number: 10739568
    Abstract: An imaging lens includes a first lens group and a second lens group, arranged in this order from an object side to an image plane side. The first lens group includes a first lens, a second lens, and a third lens having negative refractive power. The second lens group includes a fourth lens, a fifth lens having negative refractive power, and a sixth lens. The third lens has a concave surface facing the image plane side near an optical axis thereof. The fourth lens has a specific Abbe's number. The fifth lens has a specific Abbe's number.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: August 11, 2020
    Assignee: KANTATSU CO., LTD.
    Inventors: Yoji Kubota, Kenichi Kubota, Hitoshi Hirano, Hisao Fukaya
  • Patent number: 10690895
    Abstract: A zoom lens includes in order from an object side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power, a fourth lens unit having a negative refractive power, and a fifth lens unit having a positive refractive power. The first lens unit includes a positive lens, and the second lens unit includes a positive lens, and the following conditional expressions (1), (2), (3), and (4) are satisfied: ?0.015?Tp2G_min_p?0.015??(1), 70.3??d1G_max_p??(2), 1.76?nd2G_max_p?2.3??(3), and 0.3?|f2/f3|?0.9??(4).
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: June 23, 2020
    Assignee: OLYMPUS CORPORATION
    Inventors: Toyoki Kon, Kazuteru Kawamura, Yasuharu Yamada, Tetsuya Yanai, Daichi Murakami
  • Patent number: 10684455
    Abstract: A zoom optical system comprising, in order from an object side: a first lens group (G1) having positive refractive power; a front-side lens group; an intermediate lens group having positive refractive power; and a rear-side lens group. The front-side lens group is composed of one or more lens groups and has a negative lens group. At least part of the intermediate lens group is a focusing lens group. The rear-side lens group is composed of one or more lens groups. Upon zooming, the first lens group and the intermediate lens group are moved with respect to an image surface, a distance between the first lens group and the front-side lens group is changed, and a distance between the intermediate lens group and the rear-side lens group is changed. The following conditional expression is satisfied: 0.000<?Fw<0.800 where ?Fw denotes a lateral magnification of the focusing lens group in the wide-angle end state.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: June 16, 2020
    Assignee: Nikon Corporation
    Inventors: Satoru Shibata, Tomoyuki Sashima
  • Patent number: 10678031
    Abstract: Provided is a zoom lens comprising, in order from an object side to an image side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, and a rear unit including at least one lens unit, in which the second lens unit is configured to move during zooming, an interval between each pair of adjacent lens units is changed during zooming, the rear unit has a positive refractive power over an entire zoom range, and the first lens unit includes a diffraction surface formed at a cemented surface of two optical elements cemented to each other. A focal length of the first lens unit, an amount of movement of the second lens unit during zooming from a wide angle end to a telephoto end and a back focus at the wide angle end are appropriately set.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: June 9, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Yu Inomoto
  • Patent number: 10678034
    Abstract: A variable magnification optical system includes, in order from an object: a first lens group (G1) having a negative refractive power; a second lens group (G2); a third lens group (G3); a fourth lens group (G4) having a negative refractive power; and a fifth lens group (G5) having a positive refractive power, the system performing varying magnification by changing the distance between the first and second lens groups, the distance between the second and third lens groups, the distance between the third and fourth lens groups, and the distance between the fourth and fifth lens groups, and the fourth lens group including a 42nd lens group (G42) configured to be movable so as to have a component in a direction orthogonal to an optical axis and a 41st lens group (G41) disposed at an object-side of the 42nd lens group.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: June 9, 2020
    Assignee: Nikon Corporation
    Inventor: Atsushi Shibayama
  • Patent number: 10670832
    Abstract: Provided is a zoom lens including, in order from an object side to an image side: a first lens unit having a positive refractive power; a second lens unit having a negative refractive power; a third lens unit having a positive refractive power; a fourth lens unit having a negative refractive power; a fifth lens unit having a negative refractive power; and a sixth lens unit having a positive refractive power, wherein an interval between adjacent lens units is changed during zooming, wherein the first lens unit is configured to move toward the object side during zooming from a wide angle end to a telephoto end, and wherein a focal length of the first lens unit, a focal length of the sixth lens unit, and a back focus at the wide angle end are appropriately set.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: June 2, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Takeo Mori
  • Patent number: 10663697
    Abstract: An optical path folding element includes an incident surface, a path folding surface and an exiting surface. The incident surface allows a light ray to pass into the optical path folding element. The path folding surface folds the light ray from the incident surface. The exiting surface allows the light ray to pass through and depart from the optical path folding element. At least one of the incident surface and the exiting surface includes an optical effective portion and at least one engaging structure symmetrically disposed around the optical effective portion. The engaging structure includes an annular surface portion and an inclined surface portion. The annular surface portion surrounds the optical effective portion, and the inclined surface portion is located between the annular surface portion and the optical effective portion. An angle between the annular surface portion and the inclined surface portion satisfies a specific condition.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: May 26, 2020
    Assignee: LARGAN PRECISION CO., LTD.
    Inventor: Ming-Ta Chou
  • Patent number: 10656398
    Abstract: A zoom lens includes a front-side lens unit, a rear-side lens unit, and an aperture stop. The front-side lens unit includes either one lens unit having a negative refractive power or two lens units having a negative refractive power, and has a negative refractive power as a whole. The rear-side lens unit is disposed on an image side of the front-side lens unit, and has a positive refractive power as a whole at a telephoto end. The rear-side lens unit includes a plurality of lens units, and includes an object-side positive lens unit having a positive refractive power which is disposed nearest to object and the following conditional expressions (1), (2), and (3) are satisfied: 1.2?|MGB_t|?6??(1), 10??dGn_min_p?27??(2), and ?0.03?TpGn_min_p?0.014??(3).
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: May 19, 2020
    Assignee: OLYMPUS CORPORATION
    Inventors: Kazuteru Kawamura, Toyoki Kon
  • Patent number: 10649235
    Abstract: An optical element switchable to a first state and a second state includes a first material and a second material, each of optical properties of the first and second materials changes between the first state and the second state, and refractive indices of the first and second materials and Abbe's numbers of the first and second materials satisfy a predetermined relationship.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: May 12, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Satoshi Ito
  • Patent number: 10627609
    Abstract: The present invention provides a zoom lens that can perform favorable correction of chromatic aberration in the entire zoom range, and can have higher performance and a smaller size than conventional ones; and an imaging apparatus including the zoom lens. To achieve the object, provided are a zoom lens and an imaging apparatus including the zoom lens. The zoom lens includes, in order from an object side: a positive first lens group G1; a negative second lens group G2; and a GR group including one or more lens groups. In the zoom lens, changing focal length is performed by varying intervals between the lens groups. The GR group has at least two cemented surfaces having negative refractive power, convex lenses GpH and GpL satisfying predetermined conditional expressions. An aperture stop is arranged in the first lens group or after. The zoom lens satisfies predetermined conditional expressions.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: April 21, 2020
    Assignee: Tamron Co., Ltd.
    Inventor: Keisuke Okada
  • Patent number: 10620410
    Abstract: A zoom lens system according to an example embodiment includes, sequentially from an object side to an image plane side along an optical axis, a first lens group having a negative refractive power and including at least one doublet lens, the doublet lens including two lenses, a second lens group having a positive refractive power, and a third lens group having a positive refractive power, wherein the first lens group and the second lens group are configured to move along the optical axis to perform zooming and focusing, and the zoom lens system satisfies 3.0<Vdf/Vdr<6.0, where Vdf denotes an Abbe number of a lens arranged at the object side in a doublet lens, and Vdr denotes an Abbe number of a lens arranged at the image plane side in a doublet lens.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: April 14, 2020
    Assignee: HANWHA TECHWIN CO., LTD.
    Inventor: Jin Ho Jang
  • Patent number: 10620426
    Abstract: An image pickup apparatus includes an image forming optical system which includes an aperture stop that sets an axial light beam, and a diffracting optical surface disposed at a position different from a position where the aperture stop is disposed, and an imager which is disposed on an image side of the image forming optical system, and has a light-receiving surface which is not flat and is curved to be concave toward the image forming optical system, wherein the diffracting optical surface satisfies the following conditional expression (1). 0.1<|DSD/TL|?1.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: April 14, 2020
    Assignee: OLYMPUS CORPORATION
    Inventors: Takahiro Amanai, Ayami Imamura
  • Patent number: 10585267
    Abstract: A zoom lens includes in order from an object side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a rear-side lens unit, and an aperture stop. The second lens unit includes a first sub-unit having a negative refractive power and a second sub-unit having a negative refractive power, and the rear-side lens unit includes a third lens unit having a positive refractive power which is disposed nearest to object. The first lens unit includes at least a negative lens and a positive lens and the first sub-unit includes at least a negative lens and a positive lens. The third lens unit includes at least two lens components having a positive refractive power, and the following conditional expressions (1) and (2) are satisfied: 61??d1G_max_p??(1), and ?0.03?Tp2Ga_min_p?0.0165??(2).
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: March 10, 2020
    Assignee: OLYMPUS CORPORATION
    Inventor: Kazuteru Kawamura
  • Patent number: 10578844
    Abstract: Comprising a first lens group G1 having positive refractive power, disposed at the most object side, and an image side lens group disposed at a side closer to an image than the first lens group G1, upon zooming, at least a distance between the first lens group G1 and the image side lens group being varied, the image side lens group comprising a vibration reduction lens group GVR which is moved so as to have a component in a direction perpendicular to the optical axis and a focusing lens group GF which is moved along the optical axis upon focusing, thereby providing a variable magnification optical system which has a higher optical performance, an optical apparatus and a method for manufacturing a variable magnification optical system.
    Type: Grant
    Filed: January 29, 2017
    Date of Patent: March 3, 2020
    Assignee: Nikon Corporation
    Inventor: Tomoki Ito
  • Patent number: 10571661
    Abstract: An image capturing optical assembly includes, in order from an object side to an image side, a first lens group, a second lens group and a third lens group, wherein the first lens group includes a first lens element and a second lens element, the second lens group includes a third lens element, a fourth lens element and a fifth lens element, and the third lens group includes a sixth lens element, a seventh lens element and an eighth lens element. At least one surface of at least one of the lens elements of each lens group is aspheric. At least one surface of at least one of the lens elements includes at least one inflection point.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: February 25, 2020
    Assignee: LARGAN PRECISION CO., LTD.
    Inventor: Hsin-Hsuan Huang
  • Patent number: 10571784
    Abstract: A projection optical device includes a fourth lens group movable along an optical axis, a fifth lens group provided in a position maintained within the projection optical device, a fourth lens frame holding the fourth lens group and having cam pins, a guide tube having a rectilinear groove, the cam pins inserted into the rectilinear groove, and a cam tube rotated with respect to the guide tube to guide the cam pins with the rectilinear groove and the cam groove, and moving the fourth lens frame along the optical axis, wherein the cam pins are formed on an upstream side in an optical path of the fourth lens group in a direction along the optical axis, and the fifth lens group is provided on the upstream side in the optical path of the fourth lens group.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: February 25, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takuya Hatano, Naoto Takehana
  • Patent number: 10574935
    Abstract: A projection optical system includes a first lens unit and a second lens unit interposing an intermediate image therebetween. The first lens unit includes two aspherical lenses (a first lens unit first lens and a first lens unit ninth lens), and a first lens unit cemented lens. The projection optical system satisfies the following Conditional Expressions (1) and (2) when the number of lens elements of the first lens unit and the number of lens elements of the second lens unit are set to be Num1 and Num2, respectively. In addition, refractive indexes and Abbe numbers of three lenses constituting the first lens unit cemented lens satisfy a predetermined conditional expression. Num2?7??(1) 1.5?Num1/Num2?2.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: February 25, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Koji Shiokawa
  • Patent number: 10551593
    Abstract: An optical lens including a first lens group and a second lens group is provided. The first lens group is arranged between a magnified side and a minified side. The first lens group includes a lens closest to the magnified side. A refractive power of the lens is negative, and at least one surface of the lens is an aspherical surface. The second lens group is arranged between the first lens group and the minified side. A distance between the first lens group and the second lens group is smaller than 0.7 millimeter. The optical lens is complied with conditions of 0.53<EFL/IH<0.7, FOV?150 degrees, and F?2.8, where EFL is an effective focal length, IH is an image height on an imaging plane at the minified side, FOV is a maximum field of view, and F is f-number.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: February 4, 2020
    Assignee: Young Optics Inc.
    Inventors: Kuo-Chuan Wang, Chen-Cheng Liao
  • Patent number: 10551600
    Abstract: A zoom lens which include, in order from an object side: a unit A including a unit configured to move for zooming; an aperture stop; and a positive unit B configured not to move for zooming, in which the unit B includes front and rear units with an air interval therebetween longest between the aperture stop and an image plane of the zoom lens, in which the front unit consists of, in order from the object side, a positive first front unit, a negative second front unit configured to move perpendicular to an optical axis of the zoom lens to perform image stabilization, and a third front unit having a positive refractive power, in which a lateral magnification of the second front unit, focal lengths of the first front unit, the second front unit, and the third front unit are set appropriately.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: February 4, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Masakazu Kodaira
  • Patent number: 10545334
    Abstract: The purpose of the present invention is to provide an optical device capable of rotationally adjusting a lens system with a flare-cut member incorporated therein. For this purpose, the flare-cut member according to the present invention is characterized by including a light shield surface for shielding the light flux incident on the periphery of a lens, and an opening formed in the light shield surface and causing the light flux incident on a lens element to pass therethrough, wherein the opening is formed in a rotationally symmetrical shape.
    Type: Grant
    Filed: January 28, 2015
    Date of Patent: January 28, 2020
    Assignee: Maxell, Ltd.
    Inventors: Masahiko Yatsu, Shuji Kato