Patents Examined by David N. Spector
  • Ocular lens, ocular lens with additional lens, and optical device
    Patent number: 8928986
    Abstract: The invention provides an ocular lens well corrected for aberrations through a sufficiently large angle of view and having a sufficient eye relief while ensuring avoidance of increasing the overall length and suppression of an increase in lens diameter, and provides an optical device including this ocular lens. An ocular lens 3 includes, in order from an object side, a first lens group G1 including a first lens component G1A in meniscus form having a convex surface facing the object side, a second lens group G2 including a lens component L21 having a convex surface facing a viewing eye side, and a third lens group G3 having a positive refractive power. An object-side focal plane I of the third lens group G3 is positioned between the second lens group G2 and the third lens group G3.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: January 6, 2015
    Assignee: Nikon Vision Co., Ltd.
    Inventor: Satoshi Fukumoto
  • Optical element structure and optical element fabricating process for the same
    Patent number: 8922900
    Abstract: An optical element structure and a fabricating process for the same are provided. The optical element fabricating process includes providing a substrate forming thereon a protrusion; and forming an over coating layer over the protrusion and the substrate by a deposition scheme to form an optical element.
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: December 30, 2014
    Assignee: Taiwan Semiconductor Manufacturing Company Ltd.
    Inventors: Chun-Hao Tseng, Ying-Hao Kuo, Hai-Ching Chen, Tien-I Bao
  • Endoscope objective lens and endoscope
    Patent number: 8922916
    Abstract: An endoscope objective lens substantially consists of four lens groups consisting of, in order from the object side, a negative first lens group, a positive second lens group, a negative third lens group and a positive fourth lens group. During focusing from the farthest object to the nearest object, the first lens group is fixed, and the second lens group and the third lens group are moved along the optical axis. The third lens group includes a cemented lens that is formed by a positive lens and a negative lens cemented together in this order from the object side, and the cemented surface of the cemented lens is oriented such that the concave surface faces the object side.
    Type: Grant
    Filed: May 6, 2014
    Date of Patent: December 30, 2014
    Assignee: FUJIFILM Corporation
    Inventors: Chikara Yamamoto, Yoshiaki Ishii
  • Imaging lens and imaging apparatus
    Patent number: 8922910
    Abstract: An imaging lens consists of a first-lens having a meniscus-shape with its convex-surface facing an object-side and negative-refractive-power and second through fifth lenses, at least one of the surfaces of each of which is aspherical. An image-side surface of the second-lens has a concave-shape facing an image-side. The second-lens has negative-refractive-power. An object-side surface of the third-lens has a convex-shape facing the object-side. The third-lens has positive-refractive-power. An image-side surface of the fourth-lens has a convex-shape facing the image-side. The fourth-lens has positive-refractive-power. The fifth-lens has a meniscus-shape with its convex-surface facing the image-side and negative-refractive-power.
    Type: Grant
    Filed: November 29, 2013
    Date of Patent: December 30, 2014
    Assignee: Fujifilm Corporation
    Inventor: Hiromitsu Yamakawa
  • Optical unit and image pickup apparatus
    Patent number: 8922917
    Abstract: An optical unit that is configured of a three-group wide-angle lens, that is capable of suppressing optical distortion to a small amount, that has favorable optical characteristics, and that is tolerant of reflow, and an image pickup apparatus are provided. An optical unit 100 includes: a first lens group 110 including a first lens element 111; a second lens group 120 including a second lens element 121, a first transparent member 122, and a third lens element 123 that are arranged in order from object plane toward image plane; and a third lens group 130 including a fourth lens element 131, a second transparent member 132, and a fifth lens element 33 that are arranged in order from the object plane toward the image plane, the first lens group 110, the second lens group 120, and the third lens group 130 being arranged in order from the object plane toward the image plane.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: December 30, 2014
    Assignee: Sony Corporation
    Inventor: Tomohiko Baba
  • Projection zoom lens and projection type display device
    Patent number: 8922903
    Abstract: A projection zoom lens has a negative first lens group which is fixed when changing magnification, second through fifth lens groups that move when changing magnification, and a positive sixth lens group which is fixed when changing magnification, in this order from a magnification side. The reduction side is telecentric. When changing magnification from a wide angle end to a telephoto end, the second lens group moves toward the magnification side. The first and second lenses from the reduction side of the fifth lens group are a positive lens and a negative lens, respectively. The sixth lens group is constituted by a single positive lens. The projection zoom lens satisfies a predetermined Conditional Formula.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: December 30, 2014
    Assignee: FUJIFILM Corporation
    Inventors: Akiko Nagahara, Masaru Amano
  • Variable-magnification projection optical system and projection display device
    Patent number: 8922905
    Abstract: A positive first lens group that is fixed during magnification change, a negative second lens group that is movable during magnification change, a positive third lens group that is movable during magnification change, a positive fourth lens group that is movable during magnification change, and a positive fifth lens group that is fixed during magnification change are arranged in this order from the enlargement side. The system is telecentric at the reduction side. Conditional expression (1) is satisfied: L/Im?<15.0??(1), where L is a distance along the optical axis from the most enlargement-side lens surface to the most reduction-side lens surface when the projection distance is infinity, and Im? is a maximum effective image circle diameter at the reduction side.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: December 30, 2014
    Assignee: FUJIFILM Corporation
    Inventor: Masaru Amano
  • Zoom lens and imaging apparatus
    Patent number: 8922904
    Abstract: A zoom lens substantially consists of, 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, and a negative fifth lens group. When varying magnification from the wide angle end to the telephoto end, a distance between the first lens group and the second lens group is always increased, a distance between the second lens group and the third lens group is always decreased, a distance between the third lens group and the fourth lens group is always decreased, and a distance between the fourth lens group and the fifth lens group is changed, while all of the lens groups are moved with respect to an image formation position. Formulas (Ca): ?5.00?1?(?5T)2<?2.5 and (D): 0.10<fw/f1<0.25 are satisfied.
    Type: Grant
    Filed: November 29, 2013
    Date of Patent: December 30, 2014
    Assignee: FUJIFILM Corporation
    Inventors: Takashi Tanaka, Michio Cho
  • Variable power optical system and image pickup apparatus having the same
    Patent number: 8917455
    Abstract: Provided are a variable power optical system in which the value of the entire length with respect to the image height is reduced and the aberration is well corrected, and an image pickup device comprising the same. Specifically provided is a variable power optical system comprising, in order from the object side, at least a first lens group having negative refractive power, a variable power group having positive refractive power, and a final lens group having positive refractive power, wherein the variable power group is provided with, in order from the object side, a first lens element having positive refractive power, a second lens element, and a third lens element, the second lens element has a convex shape on the object side, and the final lens group comprises a positive lens, the variable power optical system satisfying the following conditional expression: 10?VdLg?45 ?1.0<(R2a?R2b)/(R2a+R2b)<1.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: December 23, 2014
    Assignee: Olympus Corporation
    Inventors: Keigo Matsuo, Takayuki Mimura, Kanato Adachi, Hisashi Goto
  • Observe tracking autostereoscopic display
    Patent number: 8917441
    Abstract: A spatially multiplexed autostereoscopic display is arranged to provide landscape and portrait operation. Multiple optical windows may be provided by spatial and temporal multiplexing techniques. A fast response lens array pair is aligned with a fast response spatial light modulator, and synchronized to provide first and second sets of images with first and second respective directionalities to provide first and second sets of respective optical windows. The first and second sets of optical windows may each comprise two or more optical windows in each viewing lobe. The optical windows may be arranged with an inclination to the vertical of 25 degrees to 65 degrees. An observer tracking system may be arranged to direct left and right eye image data to the left and right eyes of an observer, respectively, for landscape and portrait orientations of the display.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: December 23, 2014
    Assignee: RealD Inc.
    Inventors: Graham J. Woodgate, Michael G. Robinson, Jonathan Harrold
  • Zoom lens and optical apparatus equipped with zoom lens
    Patent number: 8908284
    Abstract: A zoom lens includes, in order from object side to image side, a positive first lens unit, a negative second lens unit, a positive third lens unit, a negative fourth lens unit, and a rear lens unit including, in order from object side to image side, a positive first lens subunit, a negative second lens subunit, and a positive third lens subunit. The relationship between the combined focal length of the first and second lens units at wide-angle end, the combined focal length of the third lens unit and the lens units on the image side of the third lens unit at wide-angle end, the focal length of the second lens subunit, and the focal length of the rear lens unit at telephoto end is appropriately set.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: December 9, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshihisa Tashiro, Yasuaki Hagiwara
  • Fixed focal length lens
    Patent number: 8908292
    Abstract: A fixed focal length lens includes a first lens group and a second lens group. The first lens group is disposed between a magnified side and a minified side and has a negative refractive power. The second lens group is disposed between the first lens group and the minified side and has a positive refractive power. The fixed focal length lens satisfies F/H>0.52, where F is an effective focal length of the fixed focal length, and H is an image height.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: December 9, 2014
    Assignee: Young Optics Inc.
    Inventors: Yu-Hung Chou, Ying-Hsiu Lin, Yuan-Hung Su, Shiu-Sheng Li
  • Objective optical system and endoscope using same
    Patent number: 8902515
    Abstract: An objective optical system includes: a first lens group having a negative power; an aperture stop; and a second lens group having a positive power, provided in this order from an object side. The first lens group includes a first lens, which is a negative single lens, and a cemented lens formed by a positive lens and a negative lens, provided in this order from the object side. The second lens group includes a fourth lens, which is a positive single lens, and a cemented lens formed by a positive lens and a negative lens, provided in this order from the object side. The objective optical system simultaneously satisfies Conditional Formulae (1) ?1.5<f123/f<?0.5 and (2) 1.8<f456/f<2.1, wherein f is the focal length of the entire system, f123 is the combined focal system of the first lens group, and f456 is the combined focal length of the second lens group.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: December 2, 2014
    Assignee: FUJIFILM Corporation
    Inventors: Keisuke Harada, Yoshiaki Ishii
  • Ultracompact image pickup lens
    Patent number: 8902513
    Abstract: An image pickup lens includes, an aperture stop, a first meniscus lens having positive refractive power with a convex surface facing the object, a second lens having positive refractive power with a concave surface facing the object, a third lens having negative refractive power with a convex surface facing the object, the both surfaces of the third lens are aspheric and having at least one pole-change point, and following conditional expressions are satisfied: TTL<3.0??(1) 0.80<f1/f<0.93??(2) 0.35<bf/TTL<0.42??(3) 0.70<TTL/(2IH)<0.85??(4) where TTL: a length from the surface closest to the object to an image plane, f: a focal length of an overall optical system, f1: a focal length of the first lens, bf: a length from the image-side surface of the third lens to the image plane, and IH: a maximum image height.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: December 2, 2014
    Assignee: Kantatsu Co., Ltd.
    Inventors: Tohru Ishizaka, Masaya Hashimoto
  • Objective optical system and endoscope using same
    Patent number: 8896940
    Abstract: The angle of view of an objective optical system is widened, while suppressing generation of lateral chromatic aberration. An objective optical system includes: a first lens group having a negative power; an aperture stop; and a second lens group having a positive power, in this order from an object side. The first lens group includes a negative single first lens, and a cemented lens formed by cementing a positive lens and a negative lens together, provided in this order from the object side. The second lens group includes a positive single fourth lens, and a cemented lens formed by cementing a positive lens and a negative lens together, provided in this order from the object side. The objective optical system satisfies Conditional Formula (1): 15.0<?d(RN)<18.6, wherein ?d(RN) is the Abbe's number of the negative lens in the cemented lens within the second lens group with respect to the d line.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: November 25, 2014
    Assignee: FUJIFILM Corporation
    Inventor: Keisuke Harada
  • Projection zoom lens and projection type display device
    Patent number: 8896929
    Abstract: A negative first lens group, a positive second lens group, a negative third lens group, a positive fourth lens group, a negative fifth lens group, and a positive sixth lens group are disposed in this order from the magnification side. The reduction side is made telecentric. While changing magnification, the second lens group through the fifth lens group are moved, and the first lens group and the sixth lens group are fixed. Predetermined conditional expressions are satisfied.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: November 25, 2014
    Assignee: FUJIFILM Corporation
    Inventors: Tomoyuki Baba, Masaru Amano, Akiko Nagahara
  • Imaging lens and imaging apparatus
    Patent number: 8896939
    Abstract: An imaging lens consists of negative first lens, negative second lens of a biconcave shape, third lens of a plano-convex shape having a convex surface directed toward an object side or of a positive meniscus shape having a convex surface directed toward the object side, and a fourth lens of a plano-convex shape having a convex surface directed toward an image side or of a positive meniscus shape having a convex surface directed toward the image side, which are arranged in this order from the object side. Further, the following conditional formula (11) is satisfied: 3.1<R4/f??(11), where R4: a curvature radius of an image-side surface of the second lens, and f: a focal length of an entire system.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: November 25, 2014
    Assignee: FUJIFILM Corporation
    Inventor: Taro Asami
  • Wide angle lens and photographing apparatus including the same
    Patent number: 8891182
    Abstract: Exemplary embodiments may disclose a wide angle lenses including: a first lens which has a negative refractive power; a second lens which has a positive refractive power; a third lens which has the positive refractive power; a fourth lens which has the negative refractive power; and a fifth lens which has the positive refractive power, wherein the first lens, the second lens, the third lens, the fourth lens, and the fifth lens are in an order from an object to an image, wherein the wide angle lenses satisfy a condition of 0.2<f/BFL14<0.25, wherein f denotes an overall effective focal length of the wide angle lenses and BFL14 denotes a combined back focal length of the first lens through the fourth lens.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: November 18, 2014
    Assignee: Samsung Techwin Co., Ltd.
    Inventor: Ji-yeong Yoo
  • Imaging lens and imaging apparatus including the imaging lens
    Patent number: 8885269
    Abstract: An imaging lens substantially consists of five lenses of a first lens having positive-power and a meniscus shape with its convex surface facing an object side, and at least one of the surfaces of which is aspherical, a second lens having negative-power and a concave surface facing an image side, and at least one of the surfaces of which is aspherical, a third lens having negative-power and a convex surface facing the object side, and at least one of the surfaces of which is aspherical, a fourth lens having positive-power and a convex surface facing the object side, and at least one of the surfaces of which is aspherical, and a fifth lens having negative-power and a concave surface facing the image side, and at least one of the surfaces of which is aspherical, which are in this order from the object side. A predetermined formula is satisfied.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: November 11, 2014
    Assignee: FUJIFILM Corporation
    Inventor: Yoshikazu Shinohara
  • Zoom lens and image pickup apparatus including the same
    Patent number: 8867143
    Abstract: A zoom lens includes a negative lens unit having a negative refractive power and a positive lens unit having a positive refractive power arranged in order from an object side to an image side. For focusing from infinity to a closest distance, the negative lens unit moves towards the image side and the positive lens unit moves towards the object side. Predetermined mathematical conditions are satisfied to obtain high optical performance over the entire focusing range.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: October 21, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yoshiyuki Taki