With Variable Magnification (e.g., Zoom Type) Patents (Class 359/676)
Optically compensated (Class 359/677)
Prism lens type (Class 359/678)
With fixed conjugates (Class 359/679)
Reverse telephoto (Class 359/680)
With mechanical compensation (Class 359/683)
Adjusting mechanism (Class 359/694)
  • Zoom lens and image pickup apparatus including the same
    Patent number: 8792181
    Abstract: A zoom lens includes, in order from an object side to an image side, first to fifth lens units respectively having positive, negative, positive, negative, and positive refractive powers. During zooming from a wide-angle end to a telephoto end, each of the lens units moves in such a way that a distance between the first and second lens units increases, a distance between the second and third lens units decreases, a distance between the third and fourth lens units increases, and a distance between the fourth and fifth lens units increases. The distances D34w and D34t between the third and fourth lens units, the distances D45w and D45t between the fourth and fifth lens units, focal lengths fw and ft of the entire zoom lens, and focal lengths f1 and f4 of the first and fourth lens units are appropriately set.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: July 29, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Norihiro Nanba
  • ZOOM LENS AND IMAGE PICKUP APPARATUS INCLUDING THE SAME
    Publication number: 20140204264
    Abstract: A zoom lens includes, in order from an object side to an image side: a positive first lens unit; a positive second lens unit; and an aperture stop disposed between the first and second lens units and moving along a locus different from loci of the first and the second lens units during zooming, the first and second lens units being configured to change an interval therebetween during zooming, the second lens unit including at least one positive lens and at least one negative lens. A distance from a lens surface closest to the object side in the entire system to the aperture stop at a wide angle end, and a distance from the lens surface closest to the object side in the entire system to a lens surface closest to the object side in the second lens unit at the wide angle end are each appropriately set.
    Type: Application
    Filed: January 6, 2014
    Publication date: July 24, 2014
    Inventor: Hideki Sakai
  • Zoom lens and image pickup apparatus including the same
    Patent number: 8786957
    Abstract: A zoom lens includes, in order from an object side, a positive first lens unit which does not move for zooming, a negative second lens unit which moves in an optical axis direction for zooming, a negative third lens unit which moves in the optical axis direction for zooming so as to correct image plane variation due to zooming, and a positive fourth lens unit which does not move for zooming. The fourth lens unit includes, in an order from the object side, a positive first sub lens unit and a positive second sub lens unit, which are separated by a largest air interval in the fourth lens unit. Abbe constants, partial dispersion ratios, and coefficients of the refractive index variation due to the temperature variation are appropriately set for lens materials forming the third lens unit, the first sub lens unit, and the second sub lens unit.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: July 22, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yotaro Sanjo, Shinichiro Yakita
  • Zoom lens system, interchangeable lens apparatus and camera system
    Patent number: 8786958
    Abstract: A zoom lens system, in order from an object side to an image side, comprising a first lens unit having negative optical power, a second lens unit having positive optical power, a third lens unit having negative optical power, and a fourth lens unit having positive optical power, wherein the third lens unit moves along an optical axis in focusing from an infinity in-focus condition to a close-object in-focus condition, and the conditions: 0.5<|f3/fW|<2.0 and 0.005<d3/fW<0.070 (f3: a focal length of the third lens unit, d3: an optical axial thickness of the third lens unit, fW: a focal length of the entire system at a wide-angle limit) are satisfied; an interchangeable lens apparatus; and a camera system are provided.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: July 22, 2014
    Assignee: Panasonic Corporation
    Inventor: Takuya Imaoka
  • Lens system, optical device with lens system, and method of manufacturing lens
    Patent number: 8773779
    Abstract: A lens system comprises, on a side closest to an object, a first lens component having a positive refractive power and a second lens component having a positive refractive power in order from the object; and on a side closest to an image, a cemented lens constructed by cementing together a positive lens and a negative lens in order from the object; wherein the lens system satisfies the following conditional expressions: (n1+n2)/2>1.49 (?1+?2)/2>60 where n1 and ?1 denote a refractive index and an Abbe number of the first lens component at d-line, respectively, and n2 and ?2 denote a refractive index and an Abbe number of the second lens component at d-line, respectively.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: July 8, 2014
    Assignee: Nikon Corporation
    Inventor: Toshinori Take
  • Inner-focus large-aperture medium-telephoto lens system, imaging optical device, and digital appliance
    Patent number: 8767319
    Abstract: The disclosed internal focusing large-aperture medium telephoto lens has as lens groups a positive first lens group, a positive second lens group, and a third lens group, in that order from the object side. When focusing on nearby objects, the first lens group and the third lens group have a fixed position relative to the image surface, and the second lens group displaces toward the object side. The second lens group has only one negative lens, and, in order from the object side, has at least a positive lens, a negative lens, and a positive lens. The following expression is fulfilled: ?0.5<(R1+R2)(R1?R2)<?0.1 (wherein, R1: radius of curvature of the object side surface of the negative lens in the second lens group; R2: radius of curvature of the image side surface of the negative lens in the second lens group).
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: July 1, 2014
    Assignees: Konica Minolta Advanced Layers, Inc., Nikon Corporation
    Inventors: Yoshihito Souma, Satoru Shibata
  • Zoom lens and imaging apparatus
    Patent number: 8760770
    Abstract: A zoom lens includes: a first lens group having positive refracting power; a second lens group having negative refracting power; a third lens group having positive refracting power; a fourth lens group having positive refracting power; and a fifth lens group having positive refracting power arranged in this order from an object side toward an image side, wherein when the zoom lens undergoes zooming operation from a wide-angle end toward a telescopic end, the first lens group moves away from the second lens group toward an object to be imaged, the third lens group approaches the second lens group toward the object, and the fourth lens group approaches the third lens group toward the object, and the zoom lens satisfies the following conditional expression (1) 4.5<100×D(T,2?3)/fW<15??(1).
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: June 24, 2014
    Assignee: Sony Corporation
    Inventor: Hiroki Yamano
  • Zoom lens and image pickup apparatus including the same
    Patent number: 8755126
    Abstract: A zoom lens includes a first lens unit, a second lens unit, a third lens unit, a fourth lens unit and a fifth lens unit. In the zoom lens, air intervals L2w, L3w between the second lens unit and the third lens unit and between the third lens unit and the fourth lens unit at a wide-angle end, a focal length f1 of the first lens unit, a combined focal length f23w of the second lens unit and the third lens unit at the wide-angle end, a focal length fw of the whole system at the wide-angle end, a zoom ratio Z, and a smallest value L2z1a of the air interval between the second lens unit and the third lens unit in a wide angle zoom range in which a magnification-varying ratio relative to that at the wide-angle end ranges from Z0.02 to Z0.35 are appropriately set.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: June 17, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shoichi Takemoto, Tomoyuki Nakamura
  • Zoom lens system, optical apparatus and method for manufacturing zoom lens system
    Patent number: 8743470
    Abstract: In a zoom lens system, an optical apparatus, and a manufacturing method, there are provided, in order from an object 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 group having positive power, and an aperture stop disposed to an image side of the second lens group. Upon zooming from a wide-angle end state to a telephoto end state, a distance between the first lens and second lens groups increases, a distance between the second and third lens groups decreases, a distance between the third and fourth lens groups varies, and a distance between the fourth and fifth lens groups varies. With given conditions being satisfied, high optical performance with suppressing variation in aberrations are achieved.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: June 3, 2014
    Assignee: Nikon Corporation
    Inventors: Akihiko Obama, Norikazu Yokoi, Issei Tanaka
  • Zoom lens system, interchangeable lens apparatus and camera system
    Patent number: 8743471
    Abstract: A zoom lens system, in order from an object side to an image side, comprising a first lens unit having negative optical power, a second lens unit having positive optical power, a third lens unit having negative optical power, and a fourth lens unit having positive optical power, wherein the first lens unit moves along an optical axis, and the fourth lens unit is fixed relative to an image surface, in zooming from a wide-angle limit to a telephoto limit at the time of image taking, and the condition: 0.8<|f1/fW|<1.4 (f1: a composite focal length of the first lens unit, fW: a focal length of the entire system at a wide-angle limit) is satisfied; an interchangeable lens apparatus; and a camera system are provided.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: June 3, 2014
    Assignee: Panasonic Corporation
    Inventor: Takuya Imaoka
  • Zoom lens and image pickup apparatus including the same
    Patent number: 8743469
    Abstract: A zoom lens includes a first lens unit having a positive refractive power which does not move for zooming; a second lens unit having a negative refractive power which moves during zooming; a third lens unit having a negative refractive power which moves during zooming; a fourth lens unit having a positive refractive power which moves during zooming; and a fifth lens unit having a positive refractive power which does not move for zooming. Air intervals (L2w and L2t) between the second lens unit and the third lens unit at a wide-angle end and at a telephoto end, respectively, an air interval (L3w) between the third lens unit and the fourth lens unit at the wide-angle end, a focal length (f1) of the first lens unit, and a combined focal length (f23w) of the second lens unit and the third lens unit at the wide-angle end are appropriately set.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: June 3, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomoyuki Nakamura, Shoichi Takemoto
  • Zoom lens and image pickup apparatus including the same
    Patent number: 8736971
    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, and a rear lens group including lens units and as a whole having a positive refractive power. Distances between the lens units change during zooming. The second lens unit includes, in order from the object side to the image side, a negative lens component and a cemented lens including a negative lens component and a positive lens component. The second lens unit includes at least five lens components. A focal length f1 of the first lens unit, a focal length f2 of the second lens unit, a refractive index Ndp of the positive lens component of the cemented lens, and a refractive index Ndn of the negative lens component of the cemented lens are set appropriately.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: May 27, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takahiro Hatada
  • Zoom lens and image pickup apparatus including the same
    Patent number: 8736969
    Abstract: A zoom lens includes, in order from an object side to an image side: a first lens unit having positive refractive power, which does not move for zooming, the first lens unit including a lens unit which moves for focusing; a second lens unit having negative refractive power for magnification variation; a third lens unit having negative refractive power, which moves for zooming; a fourth lens unit having positive refractive power, which moves for zooming; and a fifth lens unit having positive refractive power, which does not move for zooming, in which an interval between the fourth lens unit and the fifth lens unit becomes largest at a telephoto end, and lateral magnifications ?2w and ?2t of the second lens unit at a wide-angle end and at the telephoto end are respectively set appropriately.
    Type: Grant
    Filed: January 24, 2013
    Date of Patent: May 27, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masaru Sakamoto
  • Variable magnification optical system, optical apparatus provided with same and method for variable magnification using variable magnification optical system
    Patent number: 8730584
    Abstract: A variable magnification optical system ZL to be mounted on an electronic still camera 1 or the like is configured to have, in order from the object side, a first lens unit G1 having a positive refractive power, a second lens unit G2 having a negative refractive power, a third lens unit G3 having a positive refractive power, a fourth lens unit G4 having a negative refractive power, and a fifth lens unit G5 having a positive refractive power, and configured in such a manner that, in variable magnification, the first lens unit G1 is fixed, that, in focusing, the third lens unit G3 moves, and that at least a part of the fifth lens unit G5 moves so as to have a component in a substantially orthogonal direction to the optical axis.
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: May 20, 2014
    Assignee: Nikon Corporation
    Inventor: Tomoki Ito
  • Zoom lens
    Patent number: 8730585
    Abstract: An embodiment of this invention provides a zoom lens, which primarily includes, in order from an object side to an image-forming 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; a fourth lens group having positive refractive power; a fifth lens group having negative refractive power; and a sixth lens group having positive refractive power; wherein the first lens group comprises a prism, and the second lens group, the fourth lens group, and the fifth lens group are moved toward the third lens group along an optical axial for zooming from a wide-angle end to a telephoto end.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: May 20, 2014
    Assignee: Ability Enterprise Co., Ltd.
    Inventor: Hsiang-Ho Chou
  • Zoom lens and image pickup apparatus equipped with same
    Patent number: 8724231
    Abstract: A zoom lens includes a front lens group including a first lens unit and a second lens unit, a reflecting mirror configured to bend an optical path, and a rear lens group including two or more lens units. When the zoom lens is retracted, the reflecting mirror performs at least one of rotation and linear movement to provide space for the front lens group. A focal length of a lens unit having the highest absolute value of refractive power among negative lens units in the front lens group, a focal length of the entire zoom lens at a telephoto end, a maximum value and a minimum value of amounts of movement of the at least two lens units in the rear lens group during zooming, a length of a reflecting surface of the reflecting mirror, and a maximum effective diameter of the first lens unit are appropriately set.
    Type: Grant
    Filed: January 8, 2013
    Date of Patent: May 13, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Ken Wada
  • Image pickup apparatus having optical path reflecting zoom lens
    Patent number: 8717683
    Abstract: An image pickup apparatus includes: a zoom lens; an image pickup element having an image pickup surface which receives an image which has been formed by the zoom lens, and converts to an electric signal; a shading correction parameter storage section which stores a shading correction parameter which differs at a front-surface side and a rear-surface side with respect to a center of an image, which is for correcting asymmetric shading at the front-surface side and the rear-surface side of the zoom lens; and a shading correction section which carries out correction operation of an image which has been picked up by the image pickup element, based on the shading correction parameter of the shading correction parameter storage section. When an object having a uniform brightness is captured, at any state from the wide angle end to the telephoto end, the zoom lens satisfies conditional expression (A).
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: May 6, 2014
    Assignee: Olympus Imaging Corp.
    Inventors: Tetsuya Toyoda, Takeshi Hosoya, Masahito Watanabe, Tomoyuki Satori, Eiji Shirota
  • Apparatus and associated methods
    Patent number: 8717680
    Abstract: A coating including a liquid-phobic and/or liquid-philic material, the coating configured to control the shape of a corresponding liquid to form a liquid lens of specific focal length on the coating.
    Type: Grant
    Filed: May 6, 2011
    Date of Patent: May 6, 2014
    Assignee: Nokia Corporation
    Inventors: Zoran Radivojevic, Chris Bower
  • Zoom lens
    Patent number: 8711489
    Abstract: In a zoom lens of a fixed total length, at the time of changing the magnification from the wide-angle end toward the telephoto end, the first lens group is anchored while the second lens group is moved, and the third and fourth lens groups are moved so as to be located at the object side of the telephoto end relative to the wide-angle end, such that: the interval between the second and third lens groups is decreased at the telephoto end relative to the wide-angle end; the interval between the third and fourth lens groups is increased at the telephoto end relative to the wide-angle end; and the interval between the fourth and fifth lens groups is increased at the telephoto end relative to the wide-angle end, and at the time of focusing a near object point from a remote object point, the second lens group is moved.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: April 29, 2014
    Assignee: Olympus Imaging Corp.
    Inventors: Hirohiko Kimata, Yasuharu Yamada, Yasuji Ogata, Kazuteru Kawamura
  • Zoom lens, imaging device and information device
    Patent number: 8705180
    Abstract: A zoom lens includes, in order from an object side in an optical axis a first lens group having a positive refractive power, a second lens group having a negative refractive power; a third lens group having a negative refractive power, a fourth lens group having a positive refractive power, a fifth lens group having a positive refractive power, and an aperture stop arranged between the third lens group and the fourth lens group, an interval between the first lens group and the second lens group being increased, an interval between the second lens group and the third lens group being varied, an interval between the third lens group and the fourth lens group being decreased, and an interval between the fourth lens group and the fifth lens group being decreased when changing a magnification from a wide-angle end to a telephoto end.
    Type: Grant
    Filed: May 29, 2012
    Date of Patent: April 22, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Yohei Takano, Hiromichi Atsuumi
  • Zoom lens system
    Patent number: 8705179
    Abstract: A zoom lens system has a combined focal length fw at the wide angle end and includes, in order from an object side, a first lens group with positive refractive power and combined focal length f1; a second lens group with negative refractive power; a third lens group with positive refractive power; a fourth lens group with positive refractive power; and a fifth lens group with positive refractive power and including, in order from the object side, a negative biconcave lens with focal length f51 and a positive biconvex lens with focal length f52, the negative biconcave lens and the positive biconvex lens disposed with an air space shorter than a center thickness of the negative biconcave lens in between and both surfaces of the positive biconvex lens being aspherical. The system satisfies the following conditions: 13.5<f1/fw<17.5, and 1.0<|f51/f52|<1.5.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: April 22, 2014
    Assignee: Nittoh Kogaku K.K.
    Inventor: Masashi Yoshida
  • Variable-focal-length projection lens system and projection apparatus
    Patent number: 8699139
    Abstract: A variable-focal-length lens system for projection which achieves focusing by movement of the entire system has a second to a fourth lens group as focal-length-varying lens groups and a first lens group as a distance-compensation lens group. The second to fourth lens groups individually move in the optical axis direction to vary the group-to-group distances so as to vary the focal length of the entire system. During focusing, the first lens group moves in the optical axis direction such that, as the projection distance varies from a remote distance to a close distance, curvature of field varies to the under side.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: April 15, 2014
    Assignee: Konica Minolta Advanced Layers, Inc.
    Inventors: Katsuhiro Takamoto, Kazuhiko Inoue, Sadanobu Imamura, Kohei Wataru
  • Optical processing device
    Patent number: 8693818
    Abstract: Provided is an optical processing device including: a beam emission portion which comprises a plurality of optical fibers; a plurality of collimating lenses to which a beam emitted from the optical fibers are incident; a dispersion element which disperses the beam emitted from one optical fiber among the plurality of optical fibers; and an optical path conversion optical system which converts an optical path of the beam passing through the dispersion element and allows the beam to be incident to another optical fiber among the plurality of optical fibers, wherein the plurality of collimating lenses is installed in series in the optical path direction of the beam emitted from the optical fiber, and wherein a distance between at least two collimating lenses are adjustable in the optical path direction.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: April 8, 2014
    Assignees: Nistica, Inc., Fujikura Ltd.
    Inventors: Jefferson Wagener, Susumu Nakaya, Takaaki Ishikawa
  • Zoom lens
    Patent number: 8693106
    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, a third lens group having a positive refractive power, a fourth lens group having a positive refractive power, and a fifth lens group having a negative refractive power. The zoom lens satisfies given conditions to implement a compact, large aperture ratio zoom lens having excellent optical performance and compatible with solid state image sensors capable of recording full high vision images.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: April 8, 2014
    Assignee: Tamron Co., Ltd.
    Inventor: Lai Wei
  • Zoom lens and optical apparatus
    Patent number: 8681431
    Abstract: The zoom lens includes a first lens unit being disposed closest to an object and having a positive optical power, and at least one subsequent lens unit being disposed closer to an image than the first lens unit. The first lens unit is moved toward the object during variation of magnification from a wide-angle end to a telephoto end. The first lens unit is constituted by at least three lenses including a positive meniscus lens being disposed closest to the image among the at least three lenses and having an image side concave surface, and a negative lens being disposed on an object side next to the positive meniscus lens. A condition of 1.55<Rpi/f1<2.90 is satisfied where Rpi represent a curvature radius of the image side concave surface of the positive meniscus lens, and f1 represents a focal length of the first lens unit.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: March 25, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shigenobu Sugita
  • Zoom lens
    Patent number: 8681434
    Abstract: A zoom lens is provided. The zoom lens includes a first lens group, a second lens group and a third lens group. The first lens group includes at least one lens. The second lens group includes at least one lens. The first lens group, the second lens group and the third lens group are arranged in order from an object side to an image side. The zoom lens satisfies following conditions: NdA<1.65, NdB<1.65, and GD2/GD1<1.35. NdA is a refraction index of the first lens group. NdB is a refraction index of the second lens group. GD1 is a thickness of the first lens group along an optical axis. GD2 is a thickness of the second lens group along an optical axis.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: March 25, 2014
    Assignee: Ability Enterprise Co., Ltd.
    Inventor: Hsiang-Ho Chou
  • High zoom-ratio zoom lens system
    Patent number: 8675278
    Abstract: A high zoom-ratio 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, in that order from the object side. Upon zooming from the short focal length extremity to the long focal length extremity, at least the first through third lens groups move along the optical axis direction in a manner so that the distance between the first lens group and the second lens group increases, the distance between the second lens group and the third lens group decreases, and the distance between the third lens group and the fourth lens group increases, wherein the amount of movement of the first lens group during zooming is larger than that of the third lens group.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: March 18, 2014
    Assignee: Hoya Corporation
    Inventor: Masaru Eguchi
  • Zoom lens system, interchangeable lens apparatus and camera system
    Patent number: 8675286
    Abstract: A zoom lens system comprising: a first lens unit having positive optical power; a second lens unit having positive optical power; and at least one subsequent lens unit, wherein the zoom lens system has an image blur compensating lens unit which moves in a direction perpendicular to an optical axis, at least the first lens unit moves along the optical axis at the time of zooming from a wide-angle limit to a telephoto limit, the second lens unit or a third lens unit which is located closest to the object side in the at least one subsequent lens unit moves along the optical axis at the time of focusing from an infinity in-focus condition to a close-object in-focus condition, and the condition: 0.10<|m|/(fT?fW)<0.
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: March 18, 2014
    Assignee: Panasonic Corporation
    Inventors: Tsuneo Uchida, Koji Hoshi
  • Zoom lens and image pickup apparatus using the same
    Patent number: 8665530
    Abstract: A zoom lens includes, in order from the object side, a positive first lens group, a negative second lens group, a positive third lens group, a positive fourth lens group, a negative fifth lens group, and a positive sixth lens group. The first lens group, the third lens group, and the sixth lens group are fixed. The second lens group, fourth lens group, and the fifth lens group are movable. The first lens group includes a reflecting optical element that bends the optical path. The second lens group includes a negative lens and a cemented lens made up of a negative lens and a positive lens. The third lens group includes an aperture stop. The fourth lens group includes a positive lens and a negative lens. The fifth lens group includes a negative lens.
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: March 4, 2014
    Assignee: Olympus Corporation
    Inventor: Takashi Fujikura
  • Zoom lens
    Patent number: 8665531
    Abstract: A zoom lens includes, from the object side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, and a subsequent lens unit. The first lens unit includes an optical element composed of an anomalous dispersion optical material, a positive lens, and a negative lens. The shape of the negative lens and the ratio of the Abbe number of the positive lens and the Abbe number of the negative lens satisfy predetermined conditions.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: March 4, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Arata Sato
  • Zoom lens and image pickup apparatus having the same
    Patent number: 8665528
    Abstract: A zoom lens includes, in order from an object side to an image side, a first lens unit of a negative refractive power, a second lens unit of a positive refractive power, and a third lens unit of a positive refractive power, an interval between the first lens unit and the second lens unit and an interval between the second lens unit and the third lens unit being configured to change in zooming from a wide angle end to a telephoto end. The first lens unit includes, in order from the object side to the image side, a negative lens and a positive lens. The predetermined conditions are satisfied.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: March 4, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Akihiko Yuki
  • Zoom lens and optical imaging device including the same
    Patent number: 8665533
    Abstract: A zoom lens and an imaging optical device including the same, the zoom lens including, sequentially from an object side, a first lens group having a negative refractive power, a second lens group having a positive refractive power, and a third lens group having a positive refractive power, wherein the first lens group includes a spherical negative lens and an aspherical positive lens and the second lens group includes a positive lens and a negative lens, the positive lens and the negative lens including three or more aspherical surfaces.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: March 4, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jin-woo Kim
  • Zoom lens system, interchangeable lens apparatus and camera system
    Patent number: 8659836
    Abstract: A zoom lens system, in order from an object side to an image side, comprising a first lens unit having negative optical power, a second lens unit having positive optical power, a third lens unit having negative optical power, and a fourth lens unit having positive optical power, wherein the first lens unit is composed of at least three lens elements, has at least one lens element having positive optical power, and moves along an optical axis in zooming, and the conditions: np>1.88 and 1.5<fp/fW<4.0 (np and fp: a refractive index to the d-line and a focal length of a lens element having the highest refractive index among the lens elements having positive optical power in the first lens unit, fW: a focal length of the entire system at a wide-angle limit) are satisfied; an interchangeable lens apparatus; and a camera system are provided.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: February 25, 2014
    Assignee: Panasonic Corporation
    Inventor: Takuya Imaoka
  • Lens systems and method
    Patent number: 8659835
    Abstract: An optical system includes a first deformable lens having a membrane with a deformable portion. A sensor is configured to receive the light focused by the first deformable lens. An optical path extends through the first deformable lens and to the sensor. The first deformable lens is tuned according to an applied electrical signal in order to directly focus light traversing the optical path onto the sensor. A first volume of a first optical media and a second volume of a second optical media are defined at least in part by the deformable portion of the membrane. The first volume and the second volume are completely enclosed by the housing. The first volume and the second volume remain substantially constant for all configurations of the first deformable lens.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: February 25, 2014
    Assignee: Optotune AG
    Inventors: Michael Büeler, Manuel Aschwanden, Chauncey Gratzel, David Niederer
  • Zoom lens and image pickup apparatus including the same
    Patent number: 8659832
    Abstract: A zoom lens includes a first lens unit, a magnification-varying system including at least a second lens unit and a third lens unit, and a fourth lens unit. The fourth lens first unit has a first lens subunit having a negative refractive power, a second lens subunit having a negative refractive power, and a third lens subunit having a positive refractive power. The fourth lens unit satisfies the following conditional expression: 1.2<f41/f42<3.5, where f41 represents a focal length of the first lens subunit, and f42 represents a focal length of the second lens subunit.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: February 25, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shoichi Takemoto, Yutaka Iriyama
  • CAMERA LENS MODULE
    Publication number: 20140049834
    Abstract: A camera lens module in which an optical system is configured to include five sheets of lenses is provided. In the camera lens module, first, second, third, fourth and fifth lenses are sequentially arranged from an object side, and the first lens performs a zooming operation while moving along an optical axis. Accordingly, the optical system is configured to include five sheets of lenses for performance of a zooming operation and to allow only the first lens to perform the zooming operation, so that it is possible to manufacture a high-resolution optical system in a compact size and to perform the zooming operation at a high speed.
    Type: Application
    Filed: April 27, 2012
    Publication date: February 20, 2014
    Applicant: LG INNOTEK CO., LTD.
    Inventor: Kyunghwan Lee
  • Inner focus lens system and image pickup apparatus using the same
    Patent number: 8654448
    Abstract: An inner focus lens system includes from the object side, a first lens unit having a positive refractive power, an aperture stop, a second lens unit having a positive refractive power, and a third lens unit. The first lens unit includes a plurality of negative lenses and at least one positive lens, the lens located closest to the object side is a negative lens. The second lens unit includes at least one negative lens and at least one positive lens, and moves toward the object side for focusing from an infinite object distance to a close object distance such that the distance between the second lens unit and the aperture stop decreases and that the distance between the second lens unit and the third lens unit increases. The lens system satisfies the following conditions: 1<f1/f 14 (1), and 0.8<f23/f2<3 (2).
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: February 18, 2014
    Assignee: Olympus Imaging Corp.
    Inventors: Masaru Morooka, Akiyoshi Tochigi, Yasuharu Yamada, Yasuji Ogata
  • Zoom lens system and image pickup apparatus including the same
    Patent number: 8649105
    Abstract: Provided is a zoom lens system including, 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 prism for bending an optical path; and a rear group including a plurality of lens units, in which the first lens unit is moved to the object side while the second lens unit is moved to the image side with respect to an imaging plane at a telephoto end compared to at a wide angle end, and movement amounts M1 and M2 of the first lens unit and the second lens unit with respect to an image plane in zooming from the wide angle end to the telephoto end, a focal length f2 of the second lens unit, and a focal length ft of an entire system at the telephoto end are respectively set appropriately.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: February 11, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Toyokatsu Fujisaki
  • Zoom lens and photographing apparatus
    Patent number: 8643954
    Abstract: A zoom lens and a photographing apparatus including the same. The zoom lens includes a first lens group having a positive refractive power, a second lens group having a negative refractive power, and an additional lens grouping having a positive refractive power, which are sequentially arranged from an object side, wherein the additional lens grouping comprises a third lens group having a positive refractive power.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: February 4, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Makoto Misaka
  • Infrared zooming lens
    Patent number: 8643944
    Abstract: The present invention is directed to an infrared zoom lens that consists merely of optical components of germanium so as to implement an optical system that is capable of reducing variation in brightness during varying a magnification rate and is quite bright and that facilitates compensating for aberration, especially spherical aberration that is generally hard to do, thereby producing a clear and vivid image. The infrared zoom lens comprises first to fourth groups of lens pieces arranged in series from the foremost position closest to the object; each of the lens groups having all the lens pieces made of germanium, and at least one of the lens groups consisting simply of a single lens piece.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: February 4, 2014
    Assignee: Tamron Co., Ltd
    Inventor: Minoru Ando
  • Image pickup apparatus using zoom lens
    Patent number: 8643764
    Abstract: An image pickup apparatus includes a zoom lens having a first positive lens unit, and a first negative lens unit disposed on an object side of the first positive lens unit. A distance between the first positive lens unit and the first negative lens unit is narrowed at the time of zooming from a wide angle end to a telephoto end. The zoom lens includes an aperture stop disposed between a lens nearest to an image side in the first negative lens unit and a lens nearest to the image side in the first positive lens unit, and a light-amount reducing filter made of a resin material which is disposed on the image side of the lens nearest to the image side in the first positive lens unit, and which can be inserted in an optical path and withdrawn from the optical path. The zoom lens satisfies predetermined conditional expressions.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: February 4, 2014
    Assignee: Olympus Imaging Corp.
    Inventors: Masato Miyata, Naoki Fujii
  • Zoom lens and information device incorporating the same
    Patent number: 8638503
    Abstract: A zoom lens includes first to fifth lens groups having positive, negative, negative, positive, and positive refractive power, respectively. The third lens group includes a single negative meniscus lens with a concave surface on an object side, to move along the optical axis for focusing. When zooming from a wide angle end to a telephoto end, an interval between the first and second lens groups increases, an interval between the second and third lens groups increases, an interval between the third and fourth lens groups decreases, and an interval between the fourth and fifth lens groups decreases. The fourth and fifth lens groups are set to have a combined lateral magnification ?45T to satisfy the following condition, when an object distance is infinite at a telephoto end: ?0.041<?45T/Ft<?0.025 where Ft is a focal length of the entire zoom lens at the telephoto end.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: January 28, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Yohei Takano, Hiromichi Atsuumi
  • Methods and apparatus to perform multi-focal plane image acquisition and compression
    Patent number: 8634671
    Abstract: Example methods and apparatus to perform multi-focal plane image acquisition and compression are disclosed. A disclosed example method includes capturing a first image of a portion of an object at a first focal plane and at a first resolution, computing a contrast metric for the captured first image, comparing the contrast metric to a threshold to determine whether to capture a second image of the portion of the object at the first focal plane and at a second resolution, wherein the second resolution is different from the first resolution, capturing the second image of the portion of the object at the first focal plane and at the second resolution, and storing a first representation of the second image in a file, the file containing a second representation of the portion of the object at a second focal plane, wherein the second representation is at the first resolution.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: January 21, 2014
    Assignee: General Electric Company
    Inventors: Shai Dekel, Anthony Melanson
  • Zoom lens, optical apparatus having same, and method of manufacturing zoom lens
    Patent number: 8625203
    Abstract: The zoom lens is configured 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. The distance between each lens group is changed upon zooming from a wide-angle end state to a telephoto end state, the third lens group (G3) has, in order from the object, a thirty first lens group (G31) having positive refractive power (positive lens group), and a thirty second lens group (G32) having negative refractive power (negative lens group), the thirty second lens group (G32) is moved so as to have components orthogonal to the optical axis, and the condition of the expression 2.6<|X1|/fw<8.
    Type: Grant
    Filed: May 12, 2009
    Date of Patent: January 7, 2014
    Assignee: Nikon Corporation
    Inventors: Takeshi Suzuki, Haruo Sato
  • Zoom lens system, lens barrel, interchangeable lens apparatus and camera system
    Patent number: 8625202
    Abstract: Compact and lightweight zoom lens systems having less aberration fluctuation in association with focusing, lens barrels, interchangeable lens apparatuses, and camera systems are provided. The zoom lens system comprises: a first lens unit having positive optical power; a first focusing lens unit which is located on an image side relative to the first lens unit, has negative optical power, and moves along an optical axis in zooming and focusing; and a second focusing lens unit which is located on the image side relative to the first focusing lens unit, has positive optical power, and moves along the optical axis in the zooming and the focusing, and satisfies the condition: |d2T/d1T|<1.0 (d1T: an amount of movement of the first focusing lens unit in focusing at a telephoto limit, d2T: an amount of movement of the second focusing lens unit in focusing at a telephoto limit).
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: January 7, 2014
    Assignee: Panasonic Corporation
    Inventors: Shunichiro Yoshinaga, Isamu Izuhara, Kyoichi Miyazaki, Takuya Imaoka
  • SEMI-FINISHED BLANK FOR VARIFOCAL LENS, VARIFOCAL LENS, AND VARIFOCAL EYEGLASSES
    Publication number: 20140002791
    Abstract: It is an object to provide a semi-finished blank for a varifocal lens, as well as a varifocal lens and varifocal eyeglasses, with which power consumption can be reduced and a decrease in commercial value can be prevented. The invention comprises a first substrate, a first transparent conductive film that is produced on the front face of this first substrate, a second substrate that is opposite the first substrate, a second transparent conductive film that is produced on the back face of this second substrate, and a varifocal portion that is disposed between the front face of the first substrate and the back face of the second substrate. The first transparent conductive film is separated by laser into a first region that includes a region that is opposite the varifocal portion, and a region other than this first region.
    Type: Application
    Filed: August 30, 2013
    Publication date: January 2, 2014
    Applicant: Panasonic Corporation
    Inventors: Kouji SONE, Satoko MACHIDA, Shunsuke NISHIHARA, Akihiro MURAMATSU
  • Oblique projector having movable free form lenses
    Patent number: 8616711
    Abstract: A projection type image display apparatus in which shortening of the projection distance (widening of the angle of view) and miniaturization of the projection optic system are realized is provided. It comprises, in a traveling direction of the light, an image display element, a lens group including a plurality of lenses, a first lens, a second lens, and a mirror to reflect light emitted from the second lens to be projected obliquely on a screen in this order. The refractive power of the first lens is positive and the refractive power of the second lens is negative. The first and the second lenses are moved in an interlocked relationship with each other along an optical axis of the lens group and a movement amount of the first lens is made larger than a movement amount of the second lens.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: December 31, 2013
    Assignee: Hitachi Consumer Electronics Co., Ltd.
    Inventor: Masahiko Yatsu
  • Zoom lens
    Patent number: 8614855
    Abstract: A zoom lens comprising sequentially from an object side 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; a fourth lens group having a negative refractive power; and a fifth lens group having a positive refractive power and formed by a cemented lens alone that includes a negative lens and a positive lens. The zoom lens zooms from a wide angle edge to a telephoto edge by moving the second lens group along an optical axis, from the object side toward the image plane side. The zoom lens performs focusing and corrects image plane variation accompanying zoom by moving the fourth lens group along the optical axis, and corrects image blur caused by minute vibrations by moving the entire fifth lens group in a direction orthogonal to the optical axis.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: December 24, 2013
    Assignee: Tamron Co., Ltd.
    Inventor: Akira Mizuma
  • Zoom lens and optical apparatus
    Patent number: 8614854
    Abstract: The zoom lens includes a first lens unit being disposed closest to an object and having a positive optical power, and at least one subsequent lens unit being disposed closer to an image than the first lens unit. The first lens unit is moved toward the object during variation of magnification from a wide-angle end to a telephoto end. The first lens unit is constituted by at least three lenses including a positive meniscus lens being disposed closest to the image among the at least three lenses and having an image side concave surface, and a negative lens being disposed on an object side next to the positive meniscus lens. A condition of 1.55<Rpi/f1<2.90 is satisfied where Rpi represent a curvature radius of the image side concave surface of the positive meniscus lens, and f1 represents a focal length of the first lens unit.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: December 24, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shigenobu Sugita
  • Zoom lens system and image pickup device having the same
    Patent number: 8611017
    Abstract: A zoom lens system according to the present invention includes a first lens group with negative refractive power, a second lens group with positive refractive power, a third lens group with positive refractive power, and a fourth lens group with negative refractive power which are arranged in turn from the object side toward the image side, and the zoom lens system is formed so that, in performing a zooming operation from the wide angle end position to the telephoto end position, the first lens group keeps still, the distance between the first and second lens groups becomes small, the distance between the second and third lens groups becomes wide, and the distance between the third and fourth lens groups becomes small.
    Type: Grant
    Filed: August 16, 2011
    Date of Patent: December 17, 2013
    Assignee: Olympus Corporation
    Inventors: Takayuki Mimura, Yoshihiro Uchida