+ - + + Arrangement Patents (Class 359/687)
  • Patent number: 10365458
    Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens, sequentially disposed from an object side to an imaging plane. The optical imaging system satisfies the expression BFL/f<0.15, where BFL represents a distance from an image-side surface of the eighth lens to an imaging plane of an image sensor and f represents an overall focal length of the optical imaging system.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: July 30, 2019
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jin Hwa Jung, Yong Joo Jo
  • Patent number: 10317654
    Abstract: A variable magnification optical system includes: a first lens group having positive refractive power and arranged closest to an object; a negative lens group having negative refractive power; a positive lens group which has positive refractive power, which includes at least one lens that moves integrally with an aperture stop, and which is arranged closer to an image than the negative lens group; and a focusing group arranged between the negative lens group and the positive lens group. When varying magnification, distances between the first lens group and the negative lens group and between the negative lens group and the positive lens group are changed. When focusing, distances between the focusing group and a lens facing an object-side of the focusing group and between the focusing group and a lens facing an image-side of the focusing group are changed. A predetermined conditional expression is satisfied.
    Type: Grant
    Filed: December 25, 2015
    Date of Patent: June 11, 2019
    Assignee: Nikon Corporation
    Inventors: Kensuke Uchida, Akihiko Obama, Norikazu Yokoi, Hiroshi Yamamoto, Taku Matsuo
  • Patent number: 10288896
    Abstract: A dual-aperture zoom camera comprising a Wide camera with a respective Wide lens and a Tele camera with a respective Tele lens, the Wide and Tele cameras mounted directly on a single printed circuit board, wherein the Wide and Tele lenses have respective effective focal lengths EFLW and EFLT and respective total track lengths TTLW and TTLT and wherein TTLW/EFLW>1.1 and TTLT/EFLT<1.0. Optionally, the dual-aperture zoom camera may further comprise an optical OIS controller configured to provide a compensation lens movement according to a user-defined zoom factor (ZF) and a camera tilt (CT) through LMV=CT*EFLZF, where EFLZF is a zoom-factor dependent effective focal length.
    Type: Grant
    Filed: March 11, 2017
    Date of Patent: May 14, 2019
    Assignee: Corephotonics Ltd.
    Inventors: Gal Shabtay, Ephraim Goldenberg
  • Patent number: 10281692
    Abstract: A zoom lens system includes a positive first lens group, a negative second lens group, and positive third and fourth lens groups, in that order from the object side. Upon zooming from the short to long focal length extremities, the first lens group does not move along the optical axis direction, and the second lens group and the third lens group are movable in the optical axis direction. The first lens group includes at least one negative lens element, and the following conditions are satisfied: ?d1n<22.85 and ?8.0<f3/f2<?3.0, wherein ?d1n designates the Abbe number, with respect to the d-line, of the negative lens element, which is provided closest to the object side within the first lens group, and f2 and f3 designate the focal lengths of the second and third lens groups, respectively.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: May 7, 2019
    Assignee: RICOH IMAGING COMPANY, LTD.
    Inventor: Masakazu Saori
  • Patent number: 10261293
    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 that does not move for zooming; a second lens unit having a negative refractive power that moves during zooming; at least one lens unit that moves during zooming; and a rear lens unit including an aperture stop, in which a focal length of the zoom lens at a wide angle end, a focal length of the first lens unit, a focal length of the second lens unit, and a half angle of field of the zoom lens at the wide angle end are appropriately set.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: April 16, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Yotaro Sanjo
  • Patent number: 10197780
    Abstract: A zoom lens includes a positive first unit, a negative second unit, and a rear lens system. The rear lens system includes a positive unit A, a negative unit B, and a positive C. The first unit is not moved for zooming, the unit A is moved for zooming, and intervals between adjacent lens units are changed during zooming. The first unit includes positive and negative lenses, the unit C includes positive and negative lenses, the second unit includes negative lenses, and the unit B includes positive lenses. An Abbe number average value of the positive lenses in the first unit, an Abbe number average value of the negative lenses in the second unit, an Abbe number average value of the positive lenses in the unit B, and an Abbe number average value of the positive lenses in the unit C are appropriately set.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: February 5, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Koichi Sakuma
  • Patent number: 10191252
    Abstract: A photographing optical lens system includes at least six lens elements, wherein the photographing optical lens system includes at least one cemented lens group cemented by two of the lens elements adjacent to each other. The at least one cemented lens group includes, in order from an object side to an image side, a first cemented lens element, a cemented layer and a second cemented lens element. The first cemented lens element has a cemented image-side surface being aspheric. The cemented layer has a cemented object-side surface and a cemented image-side surface. The second cemented lens element has a cemented object-side surface being aspheric. An aspheric coefficient of the cemented image-side surface of the first cemented lens element is different from an aspheric coefficient of the cemented object-side surface of the second cemented lens element. One of the lens elements closest to an imaged object has positive refractive power.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: January 29, 2019
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Hsiang-Chi Tang, Wei-Yu Chen
  • Patent number: 10156707
    Abstract: Provided is a zoom lens having, in order from an object, a first lens group (G1) having positive refractive power, a second lens group (G2) having negative refractive power, a third lens group (G3) having positive refractive power, and a fourth lens group (G4) having positive refractive power. Upon zooming from a wide-angle end state to a telephoto end state, a distance between the first lens group and the second lens group changes, a distance between the second lens group and the third lens group changes, a distance between the third lens group and the fourth lens group changes, and at least the first lens group (G1) moves. The first lens group (G1) is constituted by a set of cemented lenses, the third lens group (G3) is constituted by, in order from the object, a positive lens and a negative lens, and the conditional expression 0.50<TL/ft<1.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: December 18, 2018
    Assignee: Nikon Corporation
    Inventors: Daisaku Arai, Takamichi Kurashige
  • Patent number: 10151964
    Abstract: An ocular lens consists of a positive first lens group, a positive or negative second lens group, and a positive third lens group, in order from an observation object side. The first lens group consists of a positive meniscus lens with a convex surface toward an eye-point side. The second lens group includes a negative lens and a positive lens, and the number of lenses constituting the second lens group is three or less. The third lens group consists of a positive meniscus lens with a convex surface toward the eye-point side. The following conditional expression relating to a focal length of the whole system and a distance on an optical axis from a lens surface closest to the observation object side to a lens surface closest to the eye-point side is satisfied: 0.8<f/TL<1.1.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: December 11, 2018
    Assignee: FUJIFILM Corporation
    Inventors: Shunsuke Miyagishima, Hiroki Saito
  • Patent number: 10146031
    Abstract: The zoom lens consists of, in order from the object side, a first lens group that has positive refractive power, a second lens group that has a negative refractive power, a third lens group that has a positive refractive power, a stop, and a fourth lens group that has a positive refractive power. During zooming, the second lens group and the third lens group move, and the other lens groups and the stop remain stationary. The second lens group consists of, in order from the object side, a second A lens group that has a cemented lens at a position closest to the image side, consists of three or less lenses, and has a negative refractive power, a second B lens group that consists of one or more negative single lenses, and a second C lens group that consists of a cemented lens and has a negative refractive power.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: December 4, 2018
    Assignee: FUJIFILM Corporation
    Inventor: Ukyo Tomioka
  • Patent number: 10101568
    Abstract: A zoom lens includes, in order from the object side: a first lens group (G1) having positive refractive power, a second lens group (G2) having negative refractive power, a third lens group (G3) having positive refractive power, and a fourth lens group (G4) having positive refractive power. Upon zooming from the wide angle end state to the telephoto end state, the interval between each lens group changes and the fourth lens group (G4) moves to the image side after having once moved to the object side. The third lens group (G3) has, in order from the object side, a positive lens, a positive lens, and a negative lens. The zoom lens satisfies the following conditional expression: 2.50<TLt/(fw*ft)1/2<3.30, where TLt is the total length of the zoom lens in the telephoto state, fw is the focal distance of the total zoom lens system in the wide angle state, and ft is the focal distance of the total zoom lens system in the telephoto state.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: October 16, 2018
    Assignee: Nikon Corporation
    Inventor: Keiichi Nakamura
  • Patent number: 10073254
    Abstract: A zoom lens includes, 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 rear lens group including one or more lens units. For zooming, the first to third lens units move, thereby changing intervals between adjacent ones of these lens units. For the zoom lens, a focal length (f1) of the first lens unit, focal lengths (fw, ft) of the zoom lens at a wide angle end and at a telephoto end, respectively, and amounts (M2, M3) by which the second and third lens units, respectively, move when zooming from the wide angle end to the telephoto end are appropriately defined.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: September 11, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Toyokatsu Fujisaki
  • Patent number: 9989731
    Abstract: An optical imaging lens includes first, second, third, and fourth lens elements arranged in order from an object side to an image side along an optical axis. Each lens element has an object-side surface and an image-side surface. The first lens element has positive refracting power. The object-side surface of the first lens element has a convex portion in a vicinity of the optical axis. The second lens element has refracting power. At least one of the object-side surface and the image-side surface of the third lens element is an aspheric surface. The object-side surface and the image-side surface of the fourth lens element are both aspheric surfaces.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: June 5, 2018
    Assignee: GENIUS ELECTRONIC OPTICAL (XIAMEN) CO., LTD.
    Inventors: Kuo-Wen Chang, Wei-Chih Chao, Feng Li
  • Patent number: 9964737
    Abstract: A six-piece optical lens for capturing image and a six-piece optical module for capturing image are provided. In order from an object side to an image side, the optical lens along the optical axis includes a first lens with refractive power, a second lens with refractive power, a third lens with refractive power, a fourth lens with refractive power, a fifth lens with refractive power and a sixth lens with refractive power. At least one of the image-side surface and object-side surface of each of the six lens elements is aspheric. The optical lens can increase aperture value and improve the imagining quality for use in compact cameras.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: May 8, 2018
    Assignee: Ability Opto-Electronics Technology Co., Ltd.
    Inventors: Nai-Yuan Tang, Yeong-Ming Chang
  • Patent number: 9958654
    Abstract: Provided is a zoom lens including, in order from an object side to an image side, first to fourth lens units having positive, negative, positive, and positive refractive powers, respectively. In the zoom lens, during zooming, the first lens unit and the third lens unit do not move, and the second lens unit and the fourth lens unit move with loci different from each other, the first lens unit consists of, in order from the object side to the image side, a negative lens G11, a positive lens G12, and a positive lens G13, and an Abbe number ?1n of a material of the negative lens G11, an average value N1ave of refractive indices of materials of three lenses included in the first lens unit, a focal length f1 of the first lens unit, and a focal length f2 of the second lens unit are appropriately set.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: May 1, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Hirofumi Abe
  • Patent number: 9939620
    Abstract: A zoom lens includes, 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 rear lens group including one or more lens units, and an aperture stop. During zooming, with the first lens unit not moving, the second lens unit and at least one of the lens units of the rear lens group move. In this zoom lens, the configuration of the third lens unit and the location of the aperture stop are appropriately set.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: April 10, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Kenta Sudo
  • Patent number: 9927595
    Abstract: A lens assembly includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens is with positive refractive power. The second lens is with negative refractive power. The third lens is with positive refractive power. The fourth lens is a meniscus lens and includes a concave surface facing the object side and a convex surface facing the image side. The fifth lens includes a concave surface facing the image side. The first lens and the third lens are made of the same material and an Abbe number of the first lens is the same as an Abbe number of the third lens. An Abbe number of the first lens, an Abbe number of the third lens and an Abbe number of the fifth lens are greater than an Abbe number of the second lens.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: March 27, 2018
    Assignees: SINTAI OPTICAL (SHENZHEN) CO., LTD., ASIA OPTICAL INTERNATIONAL LTD.
    Inventors: Po-Yuan Shih, Hsi-Ling Chang, Chien-Hung Chen
  • Patent number: 9891416
    Abstract: A variable magnification optical system includes, in order from the object side: a positive first lens group, which is fixed when changing magnification; a negative second lens group that moves from the object side to the image side when changing magnification from the wide angle end to the telephoto end; and a rearward lens group having a positive refractive power throughout the entire variable magnification range that includes at least one lens group that moves when changing magnification. The first lens group includes, in order from the object side, a positive first lens group front group, a positive first lens group middle group, and a first lens group rear group constituted by a negative lens. The first lens group front group and first lens group middle group include cemented lenses formed by cementing a negative lens and a positive lens, provided in this order from the object side, together.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: February 13, 2018
    Assignee: FUJIFILM Corporation
    Inventors: Ukyo Tomioka, Michio Cho
  • Patent number: 9804369
    Abstract: A zoom lens includes, in order from an object side to an image side, a first lens unit having positive refractive power, a second lens unit having negative refractive power, a third lens unit having positive refractive power, and a fourth lens unit having positive refractive power. During zooming from a wide-angle end to a telephoto end, the first lens unit does not move and at least the second lens unit and the fourth lens unit move. A distance between adjacent lens units varies during zooming. In the zoom lens, a lens configuration of the first lens unit, a lens configuration of the second lens unit, a focal length of each lens unit, a focal length of the zoom lens at a wide-angle end, and a lateral magnification of the second lens unit during focusing on an infinite-distance object at the telephoto end are appropriately set based on predetermined conditions.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: October 31, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yu Inomoto
  • Patent number: 9791678
    Abstract: A zoom lens has, in order from an object: a first lens group having positive refractive power; a second lens group having negative refractive power; a third lens group having positive refractive power; and a fourth lens group having positive refractive power. Zooming is performed by changing an air gap between the lens groups. The fourth lens group includes, in order from the object, a first positive lens component, a second positive lens component having a convex surface facing the object, and a negative lens component. A specified conditional expression is satisfied.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: October 17, 2017
    Assignee: Nikon Corporation
    Inventors: Haruo Sato, Issei Tanaka
  • Patent number: 9784950
    Abstract: A zoom lens system includes a positive first lens group, a negative second lens group, a positive third lens group, and a positive fourth lens group. The second and third lens groups are moved during zooming. The first lens group includes a positive first sub-lens group which does not move during a focusing operation, and a positive second sub-lens group which moves during the focusing operation. The first sub-lens group includes at least one negative lens element, the second sub-lens group is a positive single lens element, and the following conditions (1) and (2) are satisfied: 60<?d1b<75 ??(1), and ?d1a<24??(2), wherein ?d1b and ?d1a_designates Abbe numbers at the d-line of the positive single lens element of the second sub-lens group and at the d-line of the negative lens element within the first sub-lens group, respectively.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: October 10, 2017
    Assignee: RICOH IMAGING COMPANY, LTD.
    Inventors: Masakazu Saori, Yoshimitsu Ohara
  • Patent number: 9766436
    Abstract: There is provided a zoom lens, consisting of sequentially from an object side: a first lens group having a positive refractive power and a focusing function; a second lens group having a negative refractive power and having a variator function of performing zooming; a third lens group having a positive refractive power and a diaphragm; a fourth lens group having a positive refractive power, and having a compensator function of correcting a position of an imaging plane at the time of zooming; and a fifth lens group having a positive or negative refractive power, wherein the second lens group is moved to the imaging plane side from the object side along an optical axis, and the fourth lens group is moved along the optical axis in a state of fixing the first lens group, the third lens group, and the fifth lens group at the time of zooming from a wide angle end to a telephoto end, and only the first lens group is moved along the optical axis at the time of focusing.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: September 19, 2017
    Assignee: CBC Co., Ltd.
    Inventor: Katsuya Hirano
  • Patent number: 9743069
    Abstract: A camera module and an apparatus for calibrating position of the camera module are provided, the camera module according to an exemplary embodiment of the present disclosure comprises a first sensor unit configured to obtain a first image; a second sensor unit configured to obtain a second image; and a third sensor unit configured to obtain a third image, wherein the second sensor unit is spaced apart from the first sensor unit at a predetermined distance, and the third sensor unit is spaced apart from the second sensor unit at a predetermined distance.
    Type: Grant
    Filed: August 23, 2013
    Date of Patent: August 22, 2017
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Min Soo Kim
  • Patent number: 9726866
    Abstract: A zoom lens includes a first lens unit having positive refractive power, a second lens unit having negative refractive power, a third lens unit having positive refractive power, and a fourth lens unit having positive refractive power, in order from an object side to an image side. During zooming, the first lens unit is not moved, and the second lens unit, the third lens unit, and the fourth lens unit are moved to change an interval between adjacent lens units. A moving amount m2 of the second lens unit during zooming from a wide angle end to a telephoto end, a focal length f2 of the second lens unit, and a focal length fw of a whole system at the wide angle end are each set appropriately.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: August 8, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Nobuyuki Miyazawa
  • Patent number: 9715087
    Abstract: A camera lens includes from an object side to an image side: a first lens with positive refractive power; a second lens with negative refractive power; a third lens with negative refractive power; a fourth lens with positive refractive power and a fifth lens with negative refractive power. Specific conditions are satisfied. The camera lens has excellent optical properties.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: July 25, 2017
    Assignee: AAC ACOUSTIC TECHNOLOGIES (SHENZHEN) CO., LTD.
    Inventor: Hiroyuki Teraoka
  • Patent number: 9709781
    Abstract: A zoom lens including, in order from object side, a positive first lens unit not moving for zooming, a negative second lens unit moving during zooming, at least one other lens unit moving during zooming as at least a third lens unit, and a rearmost lens unit closest to an image side not moving for zooming, and also including an aperture stop at the image side of the second lens unit, average values of Abbe numbers and relative partial dispersions of each of positive lenses and negative lenses forming the second lens unit, anomalous dispersion of a lens having a smallest Abbe number of negative lenses forming the rearmost lens unit, an axial distance between surface vertex positions of lenses closest to the object and image sides of the zoom lens, and a distance between the aperture stop and the negative lens at a wide angle end are appropriately set.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: July 18, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Shoichi Takemoto
  • Patent number: 9678317
    Abstract: A zoom lens including, in order from an object side: a positive first lens unit not moving for zooming; a negative second lens unit moving during zooming; a negative third lens unit moving during zooming; and a fourth lens unit not moving for zooming and including an aperture stop, the fourth lens unit including first and second sub-lens units arranged on object side and image plane side of the aperture stop, respectively, in which a relationship between a maximum height of an axial ray from an optical axis in the first sub-lens unit when focusing at infinity at a wide angle end, and a maximum height of an axial ray at the aperture stop when focusing at infinity at the wide angle end and of full open aperture, and a lateral magnification of the fourth lens unit when focusing at infinity at the wide angle end are appropriately set.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: June 13, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Shohei Kikuchi
  • Patent number: 9651762
    Abstract: A zoom lens includes, in order from an object side: first to fifth lens units respectively having positive, negative, positive, positive, and positive or negative refractive powers. The first lens unit is configured not to move for zooming, and the second, third, and fourth lens units are configured to move during zooming to change an interval between adjacent lens units. An aperture stop is arranged between the second and third lens units. The second lens unit is positioned on the image side and the third lens unit is positioned on the object side at a telephoto end. Focal lengths of the zoom lens at a wide angle end and of the third and fourth lens units, lateral magnifications of a lens group consisting of the third and fourth lens units at the wide angle end and at the telephoto end are each appropriately set.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: May 16, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Hirofumi Abe
  • Patent number: 9599800
    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 rear lens group including at least one lens unit, in which an interval between each pair of adjacent lens units is changed during zooming, and materials of lenses included in a lens unit arranged closest to the image side are appropriately set.
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Kohei Kimura
  • Patent number: 9563043
    Abstract: The present invention has, in order along the optical axis from the object side: a first lens group (G1) that has positive refractive power; a second lens group (G2) that has negative refractive power; a third lens group (G3) that has positive refractive power; a fourth lens group (G4) that has positive refractive power; and a fifth lens group (G5). The fourth lens group (G4) is constituted by a single positive lens (L41), and the fifth lens group (G5) is constituted by a single lens (L51), which is fixed with respect to an image plane while power is being varied. The following conditional expression (1) is satisfied. 0.9<?2t·?3w/(?2w·?3t)<1.7 . . . (1), where ?2w denotes a magnification of the second lens group (G2) in the wide-angle end state, ?3w denotes a magnification of the third lens group (G3) in the wide-angle end state, ?2t denotes a magnification of the second lens group (G2) in the telephoto end state, and ?3t denotes a magnification of the third lens group (G3) in the telephoto end state.
    Type: Grant
    Filed: January 24, 2015
    Date of Patent: February 7, 2017
    Assignee: Nikon Corporation
    Inventor: Saburo Masugi
  • Patent number: 9557541
    Abstract: A positive-negative-positive-positive four group zoom lens system capable of achieving about 30 times variable magnification, the positive-negative-positive-positive four group zoom lens system including, sequentially from an object side to an image side: a first lens group having positive refractive power; a second lens group having negative refractive power; a third lens group having positive refractive power; and a fourth lens group having positive refractive power, wherein the first lens group includes one negative lens, the second lens group includes one positive lens, the third lens group includes a positive lens, the fourth lens group includes at least one positive lens, and a first condition, 0.03<|f2/ft|<0.08, is satisfied, wherein f2 denotes a focal length of the second lens group and ft denotes a focal length of the zoom lens system in a telephoto position.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: January 31, 2017
    Assignee: Hanwha Techwin Co., Ltd.
    Inventor: Hiroyuki Hagiwara
  • Patent number: 9507132
    Abstract: An object of the present invention is to provide a low-cost, miniature, wide-angle high-zoom-ratio zoom lens that has high imaging performance, and an imaging apparatus equipped with the zoom lens. To achieve the object, a zoom lens including a first lens group having positive refracting power, a second lens group having negative refracting power and a third lens group having positive refracting power in order from an object side in which a lens group P having positive refracting power is arranged closer to an image plane side than the third lens group.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: November 29, 2016
    Assignee: Tamron Co., Ltd.
    Inventors: Yoshito Iwasawa, Dayong Li
  • Patent number: 9417439
    Abstract: A zoom lens consists of a positive first lens group fixed during zooming, a negative second lens group moved during zooming, a positive third lens group moved during zooming to correct an image plane variation due to the zooming, and a positive fourth lens group fixed during zooming and includes a stop on the most object side. The second lens group includes two or more positive lenses and one or more negative lenses. The zoom lens satisfies predetermined conditional expressions with respect to the second lens group.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: August 16, 2016
    Assignee: FUJIFILM Corporation
    Inventors: Toshihiro Aoi, Shinkichi Ikeda
  • Patent number: 9413972
    Abstract: A dual-aperture zoom camera comprising a Wide camera with a respective Wide lens and a Tele camera with a respective Tele lens, the Wide and Tele cameras mounted directly on a single printed circuit board, wherein the Wide and Tele lenses have respective effective focal lengths EFLW and EFLT and respective total track lengths TTLW and TTLT and wherein TTLW/EFLW>1.1 and TTLT/EFLT<1.0. Optionally, the dual-aperture zoom camera may further comprise an optical OIS controller configured to provide a compensation lens movement according to a user-defined zoom factor (ZF) and a camera tilt (CT) through LMV=CT*EFLZF, where EFLZF is a zoom-factor dependent effective focal length.
    Type: Grant
    Filed: July 4, 2014
    Date of Patent: August 9, 2016
    Assignee: Corephotonics Ltd.
    Inventors: Gal Shabtay, Ephraim Goldenberg
  • Patent number: 9372327
    Abstract: A zoom lens includes, 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 positive refractive power. Each lens unit moves so that a distance between adjacent lens units changes during zooming. The third lens unit includes a positive lens G3i closest to the image side which has a concave meniscus surface on an image side. A conditional expression 0.03<R3i2/ft<0.25 is satisfied where R3i2 is a radius of curvature of a lens surface on the image side of the positive lens G3i, and ft is a focal length of the overall system at a telephoto end.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: June 21, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hideki Sakai
  • Patent number: 9366873
    Abstract: An infrared laser zoom beam expanding system, applied to the field of laser processing, and comprising a first lens, a second lens and a third lens. The first lens and the third lens are plane-convex plus lenses, and the second lens is a meniscus minus lens. The first lens, the second lens and the third lens respectively comprise a first surface and a second surface, a third surface and a fourth surface as well as a fifth surface and a sixth surface. The radiuses of curvature of the first to sixth surfaces are ?, ?27, 10, 1.7, ?, ?103. The center thickness of the first to third lenses is 2, 1, 4. The outer diameters of the first to third lenses are 10, 3, 34. Proportions of the refractive indexes to the Abbe numbers of the first to third lenses are 1.8:25, 1.48:68, and 1.8:25. A distance between the second surface and the third surface is 10-27. An distance between the fourth surface and the fifth surface is 119-125, The unit is millimeter, and a tolerance is 5%.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: June 14, 2016
    Assignees: HAN'S LASER TECHNOLOGY INDUSTRY GROUP CO., LTD., HAN'S CNC SCIENCE AND TECHNOLOGY CO., LTD
    Inventors: Jiaying Li, Chaoming Zhou, Bo Sun, Yuqing Chen, Yunfeng Gao
  • Patent number: 9341829
    Abstract: A zoom lens has, in order from an object, a first lens group (G1) having positive refractive power; a second lens group (G2) having negative refractive power; a third lens group (G3) having positive refractive power; and a fourth lens group (G4) having positive refractive power. Zooming is performed by changing an air gap between the lens groups. The fourth lens group (G4) includes, in order from the object, a lens component (La) having positive or negative refractive power, a positive lens component (Lb), and a positive lens component (Lc) having a convex surface facing the object. Specified conditional expressions are satisfied.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: May 17, 2016
    Assignee: Nikon Corporation
    Inventor: Haruo Sato
  • Patent number: 9341818
    Abstract: A photographic lens and a photographic apparatus including the same are provided. The photographic lens includes a first lens including a convex surface toward an object side and having a positive refractive power, a second lens including a concave surface toward an image side and having a negative refractive power, a third lens having a positive refractive power or a negative refractive power, a fourth lens having a positive refractive power or a negative refractive power, a fifth lens including a convex surface toward the image side and having a positive refractive power, and a sixth lens including a concave aspherical shape with respect to an optical axis toward the image side and having a negative refractive power. The first to sixth lenses may be sequentially arranged from the object side to the image side.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: May 17, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Tae-youn Lee, Yong-wook Kim
  • Patent number: 9335528
    Abstract: A zoom lens includes, in order from an object side to an image side, a first lens unit having positive refractive power, a second lens unit having negative refractive power, a third lens unit having positive refractive power, a fourth lens unit having negative refractive power, and a fifth lens unit having positive refractive power. At least the first, second, and third lens units move during zooming so that the first lens unit is located closer to an object side than an image side, the second lens unit is located closer to the image side, and the third lens unit is located closer to the object side at a telephoto end than a wide-angle end. Movement, focal length, and positioning parameters of first to third lens units, during zooming from the wide-angle end toward the telephoto end, are appropriately set based on mathematical conditions.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: May 10, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Toyokatsu Fujisaki
  • Patent number: 9329371
    Abstract: A zoom lens having, in order from an object: a first lens group G1 having positive refractive power; a second lens G2 group having negative refractive power; a third lens group G3 having positive refractive power; and a fourth lens group G4 having positive refractive power, wherein the first lens group moves toward an image once then moves toward the object upon zooming from a wide-angle end state to a telephoto end state, and the following conditional expressions are satisfied: 0.050<fw/TLw<0.100 0.10<ft/TLt<0.80 0.10<fw/LG2<0.64 where fw denotes a focal length of the zoom lens in the wide-angle end state, ft denotes a focal length of the zoom lens in the telephoto end state, TLw denotes a total length of the zoom lens in the wide-angle end state, TLt denotes a total length of the zoom lens in the telephoto end state, and LG2 denotes a lens configuration length of the second lens group G2.
    Type: Grant
    Filed: April 26, 2011
    Date of Patent: May 3, 2016
    Assignee: Nikon Corporation
    Inventor: Daisaku Arai
  • Patent number: 9323033
    Abstract: The zoom lens consists essentially of a positive first lens group, a negative second lens group, an aperture stop, a third lens group, a positive fourth lens group and a fifth lens group in this order from the object side. The first, third, and fifth lens groups are fixed while the second and the fourth lens groups move when changing magnification from the wide angle end to the telephoto end, and the fourth lens group moves when focusing is performed. The fifth lens group consists essentially only of a single cemented lens having a meniscus shape with a convex surface toward the image side, and conditional formulas (1), (2) are satisfied when the maximum image height is Y, the air equivalent back focus is Bf and the distance along the optical axis from the aperture stop to the peak of the most-image-side lens surface is Lsr: 0.05<Y/Bf<0.20??(1) 1.8<Lsr/Bf<3.5??(2).
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: April 26, 2016
    Assignee: FUJIFILM Corporation
    Inventor: Masanao Kawana
  • Patent number: 9313384
    Abstract: A zoom lens includes, sequentially from an object side, 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. When zoom is changed from a wide angle end to a telephoto end, an interval between the first lens group and the second lens group increases, and an interval between the second lens group and third lens group decreases. The second lens group comprises, sequentially from the object side, a second A lens group having a negative refractive power and a second B lens group having a negative refractive power, and the second B group is displaced in a direction perpendicular to an optical axis to perform a vibration prevention function.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: April 12, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Makoto Misaka
  • Patent number: 9291804
    Abstract: A zoom lens includes, in order from an object side to an image side, first to third lens units having negative, positive, and negative refractive power, respectively, and a rear lens group including a plurality of lens units and having overall positive refractive power, a distance between every adjacent lens unit included in the zoom lens is variable during zooming. The second lens unit moves in a direction nonparallel to an optical axis during image shake correction, the third lens unit moves in an optical axis direction during focusing, each of the second and third lens units consists of a single lens element, and a focal length of the entire zoom lens at a wide-angle end, a focal length of the second lens unit, and a focal length of the third lens unit are appropriately set.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: March 22, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Suguru Inoue
  • Patent number: 9285570
    Abstract: A zoom lens comprises in order from an object side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, and a third lens unit having a positive refractive power, and the third unit having a positive refractive power comprises in order from the object side, a first lens component having a positive refractive power, and a second lens component having a negative refractive power in which, a lens having a positive refractive power and a lens having a negative refractive power are cemented, and the zoom lens satisfies the following conditional expressions (1), (2), and (3) 1.4<|f3—2p/f3—2n|<2.6??(1) nd3—2p?nd3—2n?0??(2) nd3—2n?1.8??(3).
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: March 15, 2016
    Assignee: OLYMPUS CORPORATION
    Inventors: Tetsuya Yanai, Minoru Ueda, Mayu Miki
  • Patent number: 9239452
    Abstract: In a variable magnification optical system, consisting of a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a positive refractive power, and a fourth lens group having a positive refractive power, arranged in order from the object side, in which magnification is changed by moving the second lens group and focusing is performed by moving the fourth lens group, the first lens group consists of a positive lens and a positive cemented lens, arranged in order from the object side, the third lens group includes an aperture stop on the most object side, the fourth lens group consists of a positive lens, a negative lens, and a positive lens, arranged in order from the object side, with at least one surface being an aspherical surface, and the system satisfies given conditional expressions.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: January 19, 2016
    Assignee: FUJIFILM Corporation
    Inventor: Kazunori Ono
  • Patent number: 9239450
    Abstract: A zoom lens includes a first lens unit having a positive refractive power and arranged closest to an object side. 0.50<Ym5/Yw30<1.00 is satisfied at a predetermined zoom position except for a wide-angle end and a telephoto end where Yw30 denotes an image height that provides a relative illumination of 0.3 at the wide-angle end, and Ym5 denotes an image height that provides the relative illumination of 0.05 at a predetermined zoom position except for a wide-angle end and a telephoto end.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: January 19, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Nobuyuki Miyazawa
  • Patent number: 9201213
    Abstract: The imaging lens substantially consists of a first lens group, a stop, a positive second lens group which is a focusing group, and a third lens group in this order from the object side. The first lens group substantially consists of a positive first sub lens group composed of a negative meniscus lens, a positive meniscus lens, and a positive lens; and a second sub lens group including a negative lens and a cemented lens, in this order from the object side. The second lens group substantially consists of a positive single lens or a cemented lens. The third lens group substantially consists of a cemented lens, a positive lens, and a negative lens in this order from the object side.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: December 1, 2015
    Assignee: FUJIFILM Corporation
    Inventor: Kazunori Ono
  • Patent number: 9195035
    Abstract: A zoom lens includes, in order from object side: a positive first unit immovable for zooming; a negative second unit moving during zooming; a third unit moving during zooming; a stop; and a positive fourth unit immovable for zooming. The first unit includes, in order from object side, a fixed negative front first unit, a positive middle first unit moving for focusing, and a fixed positive rear first lens unit. Each of the front first and the second units includes at least one positive lens and two negative lenses. Average of Abbe constants and average of partial dispersion ratios of positive lenses in the front first unit, average of Abbe constants and average of partial dispersion ratios of negative lenses in the front first unit, combined focal length of the positive lenses in the front first unit and focal length of the front first unit are appropriately set.
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: November 24, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Yotaro Sanjo
  • Patent number: 9170407
    Abstract: A zoom lens includes, in order from an object side to an image side thereof, 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 positive refractive power. A distance between adjacent ones of the lens units changes during zooming. The first lens unit consists of, in order from the object side to the image side thereof, one negative lens element and one positive lens element. Lengths of travel M1 and M2 of the first lens unit and the second lens unit, respectively, during zooming from a wide-angle end to a telephoto end, focal lengths f1 and f2 of the first lens unit and the second lens unit, respectively, and a zoom ratio Z of the zoom lens are set appropriately.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: October 27, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kenji Shinohara
  • Patent number: 9164266
    Abstract: The present invention provides a complex modular afocal variator in which a modular afocal variator is supplemented with additional optics to form a more complex, but still modular afocal variator system, that can impart internal focusing as well as active spherical and chromatic aberration corrective improvement.
    Type: Grant
    Filed: February 17, 2010
    Date of Patent: October 20, 2015
    Assignee: Infinity Photo-Optical Company
    Inventor: H. Jay Margolis