Having Six Components Patents (Class 359/713)
  • Patent number: 8379323
    Abstract: An optical image capturing lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element. The first lens element with positive refractive power has a convex object-side surface. The object-side surface and the image-side surface of the fifth lens element are aspheric and at least one of the object-side surface and the image-side surface has at least one inflection point formed thereon. The sixth lens element with negative refractive power has a concave object-side surface and a convex image-side surface, wherein the object-side surface and the image-side surface of the sixth lens element are aspheric.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: February 19, 2013
    Assignee: Largan Precision Co., Ltd.
    Inventors: Hsin-Hsuan Huang, Tsung-Han Tsai
  • Patent number: 8373935
    Abstract: A fixed-focus lens disposed between an enlarged side and a reduced side is provided. An f-number of the fixed-focus lens is smaller than or equal to 2. The fixed-focus lens includes a first lens group and a second lens group. The first lens group includes a first lens, wherein the first lens is an aspheric lens. The second lens group, disposed between the first lens group and the reduced side, has a positive dioptre. The second lens group includes a second lens, wherein the second lens is an aspheric lens. The fixed-focus lens focuses by moving the first and the second lens group and satisfies 0.1<|f/f1|<1, 0.2<|f/f2|<1.5, and 1.5<L/BEL<3.5, where f, L, and BFL are respectively a focal length, a total length, and a back focal length of the fixed-focus lens, and f1 and f2 are respectively an effective focal length of the first and the second lens group.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: February 12, 2013
    Assignee: Young Optics Inc.
    Inventors: Chien-Hsiung Tseng, Yu-Hung Chou, Kai-Yun Chen, Ying-Hsiu Lin
  • Publication number: 20130033762
    Abstract: An photographing optical lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element with positive refractive power and a sixth lens element with negative refractive power and a image plane. The third lens element, the fourth lens element, the fifth lens element and the sixth lens element each has an aspheric object-side surface and an aspheric image-side surface. The object-side surface of the first lens element is convex. The sixth lens element further comprises at least one inflection point and is made of plastic. By adjusting the refractive power of the first lens element and the photographing optical lens assembly, and adjusting the total length of the photographing optical lens assembly, the total volume of the lens assembly is reduced, and the image quality is improved.
    Type: Application
    Filed: October 10, 2011
    Publication date: February 7, 2013
    Applicant: LARGAN PRECISION CO. LTD.
    Inventors: Tsung-Han TSAI, Hsin-Hsuan HUANG
  • Publication number: 20130033763
    Abstract: Provided is an imaging lens including a fixed first lens group having a negative refractive power, a second lens group having a positive refractive power, a stop, a third lens group including a cemented lens, a fourth lens group including a positive lens, a fifth lens group serving as a focus group and including a negative lens, and a sixth lens group including a positive lens that are arranged sequentially from an object side to an image side.
    Type: Application
    Filed: June 26, 2012
    Publication date: February 7, 2013
    Applicant: Sony Corporation
    Inventors: Toshihiro Sunaga, Motoyuki Otake
  • Publication number: 20130016278
    Abstract: An imaging lens system has, from an object side, at least one positive lens element convex to the object side, a negative lens element, and at least one lens element having an aspherical surface. The positive and negative lens elements are arranged next to each other. The formulae 0.1<Ton/Dopn<7, 0.1<(Rona?Ronb)/(Rona+Ronb)<1.5, and 0.3<Y?/TL<0.
    Type: Application
    Filed: March 22, 2011
    Publication date: January 17, 2013
    Inventors: Keiji Matsusaka, Hiroaki Tanaka, Eigo Sano
  • Publication number: 20130003193
    Abstract: The present disclosure provides an optical image capturing lens assembly comprising, in order from an object side to an image side: a first lens element with positive refractive power having a convex image-side surface; a second lens element; a third lens element; a fourth lens element, at least one of an object-side surface and an image-side surface thereof being aspheric; a fifth lens element, at least one of an object-side surface and an image-side surface thereof being aspheric; and a sixth lens element with negative refractive power having a concave image-side surface, at least one of an object-side surface and the image-side surface thereof being aspheric, at least one inflection point being formed on at least one of the surfaces thereof. With the aforementioned arrangements, the sensitivity of the optical system can be attenuated while the aberration and astigmatism can be effectively corrected to improve the image quality.
    Type: Application
    Filed: November 22, 2011
    Publication date: January 3, 2013
    Applicant: LARGAN PRECISION CO., LTD.
    Inventor: Hsin-Hsuan Huang
  • Publication number: 20120314301
    Abstract: An optical image capturing lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element. The first lens element with positive refractive power has a convex object-side surface. The object-side surface and the image-side surface of the fifth lens element are aspheric and at least one of the object-side surface and the image-side surface has at least one inflection point formed thereon. The sixth lens element with negative refractive power has a concave object-side surface and a convex image-side surface, wherein the object-side surface and the image-side surface of the sixth lens element are aspheric.
    Type: Application
    Filed: September 23, 2011
    Publication date: December 13, 2012
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Hsin-Hsuan HUANG, Tsung-Han TSAI
  • Patent number: 8331042
    Abstract: An imaging lens includes a first lens that is a negative meniscus lens having a concave surface facing the image side of the imaging lens, a second lens that is a positive lens having a convex surface facing the object side of the imaging lens, a third lens that is a negative lens having a concave surface facing the image side, a fourth lens that is a double-convex lens, a fifth lens that is a negative meniscus lens having a concave surface facing the object side, and a sixth lens that is a negative lens, which are arranged in this order from the object side.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: December 11, 2012
    Assignee: Fujifilm Corporation
    Inventors: Masao Mori, Hiromitsu Yamakawa
  • Patent number: 8310767
    Abstract: This invention provides an image capturing lens assembly, in order from an object side to an image side comprising: a first lens element with positive refractive power having a convex object-side surface; a second lens element; a third lens element; a fourth lens element having at least one of an object-side surface and an image-side surface thereof being aspheric; a fifth lens element with positive refractive power having a convex image-side surface, at least one of an object-side surface and the image-side surface thereof being aspheric, and the fifth lens element is made of plastic; and a sixth lens element with negative refractive power having a concave image-side surface, at least one of an object-side surface and the image-side surface thereof being aspheric, and the sixth lens element is made of plastic. By such arrangement, the photo-sensitivity and the total track length of the image capturing lens assembly can be reduced.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: November 13, 2012
    Assignee: Largen Precision Co., Ltd.
    Inventors: Hsin Hsuan Huang, Tsung Han Tsai
  • Patent number: 8284493
    Abstract: There is provided a projection lens unit for a pico-projector which comprises a lens array, a color composition prism, a cover glass and an image panel, the projection lens unit characterized in that: the lens array includes 1st to 6th lenses sequentially arrayed from a screen on which an image is projected, the 1st lens includes a stop side formed on a 1st side of the 1st lens, the stop side stops the passage of light, to perform the function of a diaphragm aperture, light passing from the 1st lens to the 6th lens travels in only one direction of the lens sides based on the diaphragm aperture, and parts of the lens sides through which the light does not pass are cut so that the whole height of the lens array is reduced.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: October 9, 2012
    Assignee: Sekonix Co., Ltd.
    Inventors: Hee-Joong Lee, Young-Hun Lee, Sung-Hoon Hwang, Seung-Ki Hong
  • Publication number: 20120243108
    Abstract: An photographing optical lens assembly includes, in order from an object side to an image side, a first lens element with positive refractive power having a convex object-side surface, a second lens element, a third lens element, a fourth lens element having at least one aspheric surface, a fifth lens element having a convex object-side surface and a concave image-side surface with at least one surface being aspheric and at least one inflection point being formed, and a sixth lens element having a concave image-side surface with at least one surface being aspheric. By adjusting the curvature radii of the fifth lens element, the photographing optical lens assembly can stay compact and correct the aberration while obtaining superior imaging quality.
    Type: Application
    Filed: August 2, 2011
    Publication date: September 27, 2012
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Tsung-Han Tsai, Hsin-Hsuan Huang
  • Publication number: 20120229917
    Abstract: An image capturing lens assembly includes, in order from an object side to an image side: the first lens element with positive refractive power, the second lens element with refractive power, the third lens element with positive refractive power, the fourth lens element with refractive power, the fifth lens element with refractive power, and the sixth lens element with refractive power, at least one surface of the sixth lens element thereof being aspheric and having at least one inflection point. By such arrangement, total track length and the photosensitivity of the image capturing lens assembly can also be effectively reduced while retaining high image quality.
    Type: Application
    Filed: July 6, 2011
    Publication date: September 13, 2012
    Applicant: LARGAN PRECISION CO., LTD.
    Inventor: Hsin-Hsuan HUANG
  • Publication number: 20120212838
    Abstract: An imaging lens includes in order from an object side a first lens group including a positive refractive power and a second lens group having a negative refractive power, the first lens group and the second lens group including a widest air space therebetween, the first lens group including in order from the object side a negative first lens having a concave face on the object side, a positive second lens having a convex face on both sides, an aperture stop, a negative third lens having a concave face on the object side, a positive fourth lens having a convex face on an image side and a positive fifth lens having a convex face on the image side, and the second lens group including a negative meniscus sixth lens having a concave face on the object side.
    Type: Application
    Filed: February 14, 2012
    Publication date: August 23, 2012
    Inventor: Kazuyasu OHASHI
  • Publication number: 20120194726
    Abstract: This invention provides an image capturing lens assembly, in order from an object side to an image side comprising: a first lens element with positive refractive power having a convex object-side surface; a second lens element; a third lens element; a fourth lens element having at least one of an object-side surface and an image-side surface thereof being aspheric; a fifth lens element with positive refractive power having a convex image-side surface, at least one of an object-side surface and the image-side surface thereof being aspheric, and the fifth lens element is made of plastic; and a sixth lens element with negative refractive power having a concave image-side surface, at least one of an object-side surface and the image-side surface thereof being aspheric, and the sixth lens element is made of plastic. By such arrangement, the photo-sensitivity and the total track length of the image capturing lens assembly can be reduced.
    Type: Application
    Filed: April 12, 2011
    Publication date: August 2, 2012
    Applicant: LARGAN PRECISION CO., LTD.
    Inventors: Hsin Hsuan Huang, Tsung Han Tsai
  • Publication number: 20120188654
    Abstract: An optical imaging system for pickup, sequentially arranged from an object side to an image side, comprising: the first lens element with positive refractive power having a convex object-side surface, the second lens element with refractive power, the third lens element with refractive power, the fourth lens element with refractive power, the fifth lens element with refractive power; the sixth lens element made of plastic, the sixth lens with refractive power having a concave image-side surface with both being aspheric, and the image-side surface having at least one inflection point. By such arrangements, the optical imaging system for pickup satisfies conditions related to shorten the total length and to reduce the sensitivity for using in compact cameras and mobile phones with camera functionalities.
    Type: Application
    Filed: December 21, 2011
    Publication date: July 26, 2012
    Applicant: LARGAN PRECISION CO.
    Inventor: Hsin-Hsuan Huang
  • Patent number: 8169711
    Abstract: A zoom lens comprises 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 group including at least one lens unit, in order from an object side to an image side. Each of the lens units is configured to move so that a total lens length at a wide-angle end is longer than that at a telephoto end to perform a zoom operation. A movement amount M1 of the first lens unit at the wide-angle end and the telephoto end with respect to an imaging surface, a focal length f1 of the first lens unit, and focal lengths fw and ft of a whole system at the wide-angle end and the telephoto end are appropriately set.
    Type: Grant
    Filed: May 26, 2010
    Date of Patent: May 1, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Toyokatsu Fujisaki
  • Publication number: 20120081799
    Abstract: A fixed-focus lens disposed between an enlarged side and a reduced side is provided. An f-number of the fixed-focus lens is smaller than or equal to 2. The fixed-focus lens includes a first lens group and a second lens group. The first lens group includes a first lens, wherein the first lens is an aspheric lens. The second lens group, disposed between the first lens group and the reduced side, has a positive dioptre. The second lens group includes a second lens, wherein the second lens is an aspheric lens. The fixed-focus lens focuses by moving the first and the second lens group and satisfies 0.1<|f/f1|<1, 0.2<|f/f2|<1.5, and 1.5<L/BEL<3.5, where f, L, and BFL are respectively a focal length, a total length, and a back focal length of the fixed-focus lens, and f1 and f2 are respectively an effective focal length of the first and the second lens group.
    Type: Application
    Filed: April 27, 2011
    Publication date: April 5, 2012
    Applicant: YOUNG OPTICS INC.
    Inventors: Chien-Hsiung Tseng, Yu-Hung Chou, Kai-Yun Chen, Ying-Hsiu Lin
  • Publication number: 20120057249
    Abstract: A negative first lens having a concave surface facing the reduction side of a lens for projection, a positive second lens having a convex surface facing the magnification side of the lens for projection, a negative third lens having a concave surface facing the magnification side, a positive fourth lens having a convex surface facing the reduction side, a positive fifth lens, and a positive sixth lens are arranged in this order from the magnification side, and the reduction side of the optical system is telecentric. Further, the following formula (A) is satisfied: 1.2?Bf/f?2.5??(A), where Bf: back focus in air of the entire lens system of the lens for projection, and f: focal length of the entire lens system.
    Type: Application
    Filed: September 6, 2011
    Publication date: March 8, 2012
    Applicant: FUJIFILM CORPORATION
    Inventor: Chikara YAMAMOTO
  • Patent number: 8116583
    Abstract: A light modulation panel is inserted into an optical path of an imaging lens composed of an image-forming optical system to make the imaging lens function as a depth-of-field-extended optical system. The light modulation panel has power that makes a peak position of defocus MTF when the imaging lens is used alone to function as the image-forming optical system and a peak position of defocus MTF when the imaging lens functions as the depth-of-field-extended optical system by insertion of the light modulation panel into the optical path of the imaging lens coincide with each other.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: February 14, 2012
    Assignee: Fujifilm Corporation
    Inventor: Kenichi Sato
  • Patent number: 8111467
    Abstract: A zoom lens includes, in order from an object side to an image plane side, a first lens group fixed to the image plane during zooming, having a positive refractive power, and including a single lens having a negative refractive power, an optical path change member for changing an optical path, and a positive lens group having a positive refractive power, which are arranged in order from the object side, a second lens group having a negative refractive power and including a negative lens group and a positive lens group which are arranged in order from the object side with an air gap, a third lens group fixed to the image plane during zooming and having a positive refractive power, and at least one lens group having a positive refractive power. The zoom lens satisfies the conditions the 1.4<|fLG1/fw|<5.8 and ?4.8<Ept/Yimg<?2.5.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: February 7, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yoshito Iwasawa
  • Patent number: 8040613
    Abstract: In a zoom lens ZL1 having a plurality of lens groups G1 to G2 which are disposed in order from an object, where a refractive index average value of the lens components which constitute the zoom lens ZL1 is defined as ndav and a refractive index average value of the lens components which constitute the first lens group G1 which is disposed to closest to the object among the plurality of lens groups G1 to G2 is defined as ndGlav, the zoom lens ZL1 is constituted to satisfy the conditional expression ndav?1.80 and to satisfy the conditional expression ndGlav?1.85.
    Type: Grant
    Filed: February 26, 2008
    Date of Patent: October 18, 2011
    Assignee: Nikon Corporation
    Inventors: Daisaku Arai, Mami Muratani
  • Patent number: 8023202
    Abstract: The present invention is an imaging lens of which optical performance does not deteriorate even in a high temperature environment, various aberrations are well corrected, optical length is short, and back focus is sufficiently secured, the imaging lens comprising a first diaphragm S1, a first junction type compound lens, a second diaphragm S2, and a second junction type compound lens, characterized in that the first diaphragm, the first junction type compound lens, the second diaphragm and the second junction type compound lens are arranged in this sequence from an object side to an image side. The first junction type compound lens comprises a first lens L1, a second lens L2 and a third lens L3, arranged in the sequence from the object side to the image side, and the second junction type compound lens comprises a fourth lens L4, a fifth lens L5 and a sixth lens L6, arranged in this sequence from the object side to the image side.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: September 20, 2011
    Assignee: Milestone Co., Ltd.
    Inventor: Satoshi Do
  • Patent number: 7995291
    Abstract: An image reading lens system of Example 1 includes six lenses having first to sixth lenses being arranged in order from an object side and an aperture diaphragm. In the image reading lens system, the first lens, the third lens, and the sixth lens are formed of negative lenses, and the second lens, the fourth lens, and the fifth lens are formed of positive lenses. The first lens, the second lens, the third lens, and the fifth lens are made of glass, and surfaces of all these lenses are formed of spherical surfaces. The fourth lens and the sixth lens are made of resin, and surfaces of the fourth lens and surfaces of the sixth lens are formed of aspheric surfaces. A cemented lens is formed of the second lens and the third lens with a cemented surface interposed therebetween, and is disposed adjacent to the aperture diaphragm.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: August 9, 2011
    Assignee: Fujinon Corporation
    Inventor: Yoko Yamamoto
  • Publication number: 20110157722
    Abstract: An imaging lens system in order from the object side to the image side includes a first lens with negative refractive power, a second lens with positive refractive power, a third lens with negative refractive power, a fourth lens with positive refractive power, a fifth lens with negative refractive power and a sixth lens with positive refractive. The imaging lens system satisfies the following formulas: Nd2>1.8 and Vd2<25, where Nd2 is the refractive index of the second lens, Vd2 is the Abbe number of the second lens.
    Type: Application
    Filed: April 9, 2010
    Publication date: June 30, 2011
    Applicants: PREMIER IMAGE TECHNOLOGY(CHINA) LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: YANG-CHENG LUO
  • Patent number: 7957074
    Abstract: An imaging lens system is provided an includes: in order from the object side, a first lens which has a negative power; a second lens which has a negative power; a third lens; a fourth lens which has a positive power; a fifth lens; and a sixth lens which has a positive power. The first lens is made of glass, and the second to sixth lenses are made of plastic. At least one lens surface of each of the second to sixth lenses is aspheric, and each of the third lens and the fifth lens is made of a material having an Abbe number of 45 or less at the d-line.
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: June 7, 2011
    Assignee: Fujinon Corporation
    Inventor: Taro Asami
  • Patent number: 7933078
    Abstract: There is provided a super wide angle optical system including, arranged about an optical axis: a first lens having a negative refractive power and having a meniscus shape with a convex object-side surface; a second lens having a negative refractive power and having a meniscus shape with a convex object-side surface; a third lens having a positive refractive power and having both convex surfaces; a fourth lens having a positive refractive power; a fifth lens having a negative refractive power; and a sixth lens having a positive refractive power and having both convex surfaces.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: April 26, 2011
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Phil Ho Jung, Moon Do Yi
  • Patent number: 7929221
    Abstract: A ultra-wide angle objective lens comprising a first group having a first lens element having a convex object surface facing the object and a concave image surface facing the image plane, and a second aspheric lens element, the second aspheric lens element having a varying power that is negative at its vertex; and that increases positively with radial distance from the vertex. A second group has at least one lens element and a positive power. A third group has at least a first and a second lens element and a positive power. The ratio of the total track to the focal length satisfies the condition that TT/fo=<33 and the image height on a focal plane is h(?)>f*?, where h(?) is the image height formed by an off-axis chief ray having a field angle ?, and f is the effective focal length of the lens.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: April 19, 2011
    Inventor: Alex Ning
  • Patent number: 7920327
    Abstract: An image capturing apparatus includes: at least one or more vertically movable lens groups among at least three or more lens groups, which constitute a zoom lens, movable in an optical axis direction, the vertically movable lens group being movable in a direction substantially perpendicular to the optical axis; a zoom lens group among the three or more lens groups, the zoom lens group being movable in the optical axis direction; and a correction mechanism that corrects a position of the optical axis based on the three or more lens groups by moving the vertically movable lens group in a wide-angle end state to a predetermined position in the substantially perpendicular direction. When the vertically movable lens group is moved for the purpose of anti-vibration at each zoom position in the substantially perpendicular direction, the apparatus is configured to satisfy the following Conditional Expression (1). 0.7<(Lw+Bw)/Bt<1.
    Type: Grant
    Filed: January 29, 2010
    Date of Patent: April 5, 2011
    Assignee: Sony Corporation
    Inventors: Atsushi Ohata, Daisuke Kuroda, Masayuki Murata
  • Patent number: 7889432
    Abstract: An immersion microscope objective lens of the present invention has: in order from an object, a first lens group G1 having positive refractive power and having a cemented lens of a plano convex lens having a plane facing the object and a meniscus lens having a concave surface facing the object, and a single meniscus lens having a convex surface facing the object; a second lens group having positive refractive power and having a plurality of cemented lenses; and a third lens group having negative refractive power and having a cemented meniscus lens having a concave surface facing an image, and a cemented meniscus lens having a concave surface facing the object. And the following conditional expressions 0.12<d0/f<0.25, 0.04<?Ct(p)??Ct(n)<0.09 and ?0.03<?hg(p)??hg(n)<0.00 are satisfied.
    Type: Grant
    Filed: December 9, 2009
    Date of Patent: February 15, 2011
    Assignee: Nikon Corporation
    Inventors: Katsuya Watanabe, Takayuki Morita
  • Patent number: 7869136
    Abstract: In a zoom lens, in which the distance between the first lens group and the second lens group changes during zooming, wherein a refractive optical element A that has a positive refracting power if its object side surface and its image side surface are interfaces with air is provided between an object side base optical element B and an image side base optical element C to constitute therewith a three-piece cemented optical element D in the first lens group, there is at least one optical element having a positive refracting power disposed closer to the object side than the three-piece cemented optical element D, and the zoom lens satisfies a certain condition.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: January 11, 2011
    Assignee: Olympus Corporation
    Inventors: Akitaka Nakagawa, Hisashi Goto
  • Patent number: 7813050
    Abstract: A zoom lens includes, in order 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 negative refractive power, a fourth lens group having positive refractive power, a fifth lens group having positive refractive power, and a sixth lens group having positive refractive power. The zoom lens satisfies the following conditions: (1) 25<TT/fw<27; (2) 8.5 mm<BFL<12.5 mm; and (3) (V2+V5)?(V1+V6)>60. TT is a distance from the object side of the first lens group to the image side of the sixth lens group, fw is a shortest focal length of the zoom lens, BFL is a distance from the image side of the sixth lens group to the imaging sensor, and V1, V2, V5, V6 are Abbe numbers of the first, second, fifth, and sixth lens group, respectively.
    Type: Grant
    Filed: June 26, 2009
    Date of Patent: October 12, 2010
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventors: Te-Lun Hsu, Chun-Hsiang Huang
  • Publication number: 20100232037
    Abstract: The present invention is an imaging lens of which optical performance does not deteriorate even in a high temperature environment, various aberrations are well corrected, optical length is short, and back focus is sufficiently secured, the imaging lens comprising a first diaphragm S1, a first junction type compound lens, a second diaphragm S2, and a second junction type compound lens, characterized in that the first diaphragm, the first junction type compound lens, the second diaphragm and the second junction type compound lens are arranged in this sequence from an object side to an image side. The first junction type compound lens comprises a first lens L1, a second lens L2 and a third lens L3, arranged in the sequence from the object side to the image side, and the second junction type compound lens comprises a fourth lens L4, a fifth lens L5 and a sixth lens L6, arranged in this sequence from the object side to the image side.
    Type: Application
    Filed: August 29, 2007
    Publication date: September 16, 2010
    Applicants: Milestone, Co., Ltd.
    Inventor: Satoshi Do
  • Patent number: 7768719
    Abstract: A super wide angle optical system including: a first lens group including one or more of irrotational symmetric lens surfaces disposed sequentially from an object side and having, overall, a negative refractive power; an aperture stop for intercepting unnecessary light; and a second lens group including one or more of irrotational symmetric lens surfaces and having, overall, a positive refractive power.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: August 3, 2010
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Phil Ho Jung, Moon Do Yi
  • Patent number: 7715111
    Abstract: The projection zoom lens system includes a negative first lens group, a positive second lens group, a third lens group, a positive fourth lens group, a fifth lens group, and a positive sixth lens group. The lens system is nearly telecentric on a reduction side. During zooming, the second to fifth lens groups are moved while the first and six lens groups remain stationary. The third lens group includes a positive lens LP having a convex surface directed to a magnification side, and a negative lens LN having a concave surface which is directed to the reduction side and has a curvature stronger than a magnification-side surface of the negative lens LN. The conditional expression of 5.0?|fG3/RLN-2| is satisfied. Here, fG3 denotes a focal length of the third lens group, and RLN-2 denotes a radius of curvature of the reduction-side surface of the negative lens LN.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: May 11, 2010
    Assignee: Fujinon Corporation
    Inventors: Chikara Yamamoto, Masaru Amano
  • Publication number: 20090296234
    Abstract: An imaging lens system is provided an includes: in order from the object side, a first lens which has a negative power; a second lens which has a negative power; a third lens; a fourth lens which has a positive power; a fifth lens; and a sixth lens which has a positive power. The first lens is made of glass, and the second to sixth lenses are made of plastic. At least one lens surface of each of the second to sixth lenses is aspheric, and each of the third lens and the fifth lens is made of a material having an Abbe number of 45 or less at the d-line.
    Type: Application
    Filed: May 26, 2009
    Publication date: December 3, 2009
    Inventor: Taro ASAMI
  • Patent number: 7605985
    Abstract: A projection zoom lens is provided and includes: in order from the magnification side, a negative first lens group performing focusing with being fixed during power-varying; a positive second lens group, a positive third lens group, a positive fourth lens group, a positive fifth lens group, which are moved with correlation; and a positive sixth lens group fixed during the power-varying. An aperture diaphragm is moved between the fourth lens group and the fifth lens group during the power-varying to keep Fno constant in the whole power-varying region. In addition, the expression of 1.7<Bf/f<3.0 is satisfied, where f is a focal length of the whole system, and Bf is a back focal length (air conversion distance) of the whole system.
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: October 20, 2009
    Assignee: Fujinon Corporartion
    Inventors: Akiko Nagahara, Hiroshi Yamada
  • Patent number: 7580199
    Abstract: A zoom lens includes a focus unit, a zoom unit, an aperture stop, and an imaging unit having a splitting element that are arranged in that order from an object side to an image side. The splitting element includes an incident surface for a light beam, a half mirror surface for splitting the light beam into reflected light and transmitted light, a splitting exit surface from which the reflected light is emitted, and an exit surface from which the transmitted light is emitted. The incident surface and the exit surface are perpendicular to an optical axis of the zoom lens. The ratio of the distance from the aperture stop to the exit surface and the equivalent air length from the aperture stop to an image plane of the zoom lens and the ratio of the effective diameters of the exit surface and the splitting exit surface are set properly.
    Type: Grant
    Filed: July 30, 2008
    Date of Patent: August 25, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shinichiro Yakita
  • Patent number: 7576923
    Abstract: A zoom lens comprises a plurality of lens units including a first lens unit disposed most adjacent to an enlargement side and having negative refractive power, wherein one or more lens units of the plurality of lens units are moved in the direction of the optical axis thereof during magnification change, and wherein the first lens unit includes a 1-1st lens unit comprising at least one lens of negative refractive power and moved during focusing and a 1-2nd lens unit having positive refractive power, and fixed during focusing.
    Type: Grant
    Filed: May 13, 2008
    Date of Patent: August 18, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kazuhiro Inoko
  • Patent number: 7567389
    Abstract: A zoom lens includes a first lens group having a negative optical power and including a reflection optical element; a second lens group having a positive optical power; a third lens group having a negative optical power; a fourth lens group having a positive optical power; and, a fifth lens group. At least the second lens group and the fourth lens group move to the object side of the zoom lens for varying a power of the zoom lens from a wide-angle end to a telephoto end. The zoom lens further includes a diaphragm and the diaphragm moves to the object side for varying the power of the zoom lens from the wide-angle end to the telephoto end.
    Type: Grant
    Filed: June 18, 2008
    Date of Patent: July 28, 2009
    Assignee: Konica Minolta Opto, Inc.
    Inventor: Yoshihito Souma
  • Patent number: 7554753
    Abstract: A fisheye lens, comprising a front group made up of a total of three groups, which are two concave lenses 1 and 2 whose concave surfaces are directed toward the image side, and a compound lens 3 whose concave surface is directed toward the image side and which has an overall convex or concave refractive power; and a rear group formed by three groups of convex lenses 4, 5, and 6, wherein the front group includes at least one compound lens set, the rear group includes one compound lens set, and at least a first surface of a first concave lens 1 of the front group is an aspheric surface, and satisfies specific conditions. As a result, it is possible to obtain a fisheye lens that can realize a foveal optical system with undiminished illuminance all the way to the periphery and with high resolution over the entire field of view, and with which a wide field of view and an extremely compact size can be attained with a single wide-angle optical system.
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: June 30, 2009
    Assignee: Nikon Corporation
    Inventor: Koichi Wakamiya
  • Patent number: 7511898
    Abstract: A zoom lens includes, in sequence from an object side to an image side along an optical axis, first to sixth lens groups respectively having positive, negative, positive, positive, negative, and positive refracting powers. The first lens group includes a reflecting member for bending the optical axis by substantially 90 degrees. The first and third lens groups remain stationary on the optical axis when the zoom lens zooms or focuses. Zooming is performed by moving the second, fourth, and fifth lens groups along the optical axis. Focusing is performed by moving the fourth lens group and/or the fifth lens group along the optical axis. Image shift is performed by moving the sixth lens group in a direction substantially perpendicular to the optical axis. The fourth lens group includes a single positive lens and a single negative lens.
    Type: Grant
    Filed: April 2, 2008
    Date of Patent: March 31, 2009
    Assignee: Sony Corporation
    Inventor: Takumi Matsui
  • Patent number: 7471465
    Abstract: To provide a high-brightness, small, low-cost optical apparatus which covers a wide-angle to super-wide-angle region and which reliably corrects various aberrations with a small number of lenses. At least one negative lens unit 1, a meniscus lens 2 that is convex on an object side, an aperture stop S, and a double-convex positive lens 3 are arranged in order from the object side. At least one of the lenses positioned on the object side of the aperture stop S and the positive lens 3 include respective aspherical surfaces.
    Type: Grant
    Filed: January 17, 2008
    Date of Patent: December 30, 2008
    Assignee: Alps Electric Co., Ltd.
    Inventors: Tatsumaro Yamashita, Eiki Matsuo
  • Patent number: 7466495
    Abstract: An image pickup apparatus includes a zoom lens including at least two movable lens groups; an image pickup element that converts an optical image formed with the zoom lens into an electric signal; and an image processor that electrically corrects a lateral chromatic aberration to be generated at the zoom lens. The zoom lens satisfies Conditional Expressions (1) and (2) as follows, ?5.0<W_ate(X)/T_ate(X)<?0.2??(1) 0.003<|Max_ate(10)/Himg |<0.03??(2) where W_ate(X) is an aberration amount of the lateral chromatic aberration from the C-line to the g-line, at a wide-angle end, corresponding to a (X×10) % image height, T_ate(X) is an aberration amount of the lateral chromatic aberration from the C-line to the g-line, at a telephoto end, corresponding to a (X×10) % image height, Max_ate(X) is one of W_ate(10) and T_ate(10), the one having a larger absolute value, and Himg is a diagonal length of the image pickup element.
    Type: Grant
    Filed: April 7, 2008
    Date of Patent: December 16, 2008
    Assignee: Sony Corporation
    Inventors: Daisuke Kuroda, Takeshi Hatakeyama
  • Patent number: 7463426
    Abstract: An image pickup apparatus includes an image pickup element and an optical system configured to form an image on the image pickup element. The optical system 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 including a reflecting member configured to deflect an optical axis, and a rear lens unit having a positive refractive power and including at least one lens unit having a positive refractive power. The second lens unit is stationary for zooming. During zooming, the image pickup element moves, and an interval between the first lens unit and the second lens unit and an interval between the second lens unit and the rear lens unit vary.
    Type: Grant
    Filed: December 4, 2007
    Date of Patent: December 9, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventor: Akihiro Nishio
  • Patent number: 7411740
    Abstract: Disclosed is a zoom lens, which includes, in sequence from an object side to an image side, a positive first lens group, a negative second lens group, a positive third lens group, a positive fourth lens group, a fifth lens group, a negative sixth lens group and a positive lens group. The first, third, fifth and seventh lens groups are fixed. When the zoom lens is made to zoom from a wide-angle end to a telephoto end, the second and fourth lens groups move toward the third lens group, while the sixth lens group moves toward the seventh lens group. The absolute value of the ratio of the focal distance of the second lens group to that of the sixth lens group is within a range between 0.1 and 0.5.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: August 12, 2008
    Assignee: Asia Optical Co., Inc
    Inventor: Ming-chung Chen
  • Patent number: 7403339
    Abstract: A zoom lens comprises a plurality of lens units including a first lens unit disposed most adjacent to an enlargement side and having negative refractive power, wherein one or more lens units of the plurality of lens units are moved in the direction of the optical axis thereof during magnification change, and wherein the first lens unit includes a 1-1st lens unit comprising at least one lens of negative refractive power and moved during focusing and a 1-2nd lens unit having positive refractive power, and fixed during focusing.
    Type: Grant
    Filed: January 4, 2007
    Date of Patent: July 22, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kazuhiro Inoko
  • Patent number: 7362509
    Abstract: A zoom lens includes, in sequence from the object side: a first lens group with an overall negative refractive power; and a second lens group with an overall positive refractive power. A zoom factor changes by moving the second lens group. Focal adjustments are made by moving the first lens group accompanied by the change of the zoom factor made by the movement of the second lens group. The first lens group includes a first lens having a negative refractive power and a second lens having a positive refractive power. The second lens group includes a third lens having a positive refractive power, a fourth lens with a positive refractive power and a fifth lens with a negative refractive power bonded together, and a sixth lens with a positive refractive power. The bonded lenses form a meniscus shape with a convex surface facing the object side. The resulting lens is short in length, compact, thin, and suitable for digital still cameras.
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: April 22, 2008
    Assignee: Nidec Copal Corporation
    Inventor: Hotaka Takeuchi
  • Patent number: 7317580
    Abstract: In this invention, to provide a compact zoom lens having a small number of optical element groups to be driven and a simple moving mechanism, at least one of a plurality of optical element groups arranged in the lens system includes a refractive power variable element of a transmission type which has a compensation function to correct focus movement caused by zooming and a focus function to correct focus movement caused by a variation in inter-object distance. The refractive power variable element is a liquid optical element including a first liquid having a conductivity or a polarity and a second liquid which is not mixed with the first liquid, the first liquid and the second liquid being enclosed in a container fluid-tight so as to define an interface therebetween having a predetermined shape, the liquid optical element being arranged such that a refractive power thereof is adjusted by changing a curvature of the interface.
    Type: Grant
    Filed: March 11, 2005
    Date of Patent: January 8, 2008
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Shoji Kogo, Masae Sato, Susumu Yamaguchi, Hiroshi Sato, Yuuichi Atarashi
  • Patent number: 7289273
    Abstract: A zoom lens includes, in order from the object side, the first lens unit consisting of one negative lens component in which a plurality of lens components are cemented to one another and the second lens unit including one negative lens component and having positive refracting power as a whole. In this case, the zoom lens satisfies the following condition: 0.15<t1/fw<0.6 where t1 is the thickness, measured along the optical axis, of the first lens unit and fw is the focal length of the entire system at the wide-angle position of the zoom lens.
    Type: Grant
    Filed: March 10, 2005
    Date of Patent: October 30, 2007
    Assignee: Olympus Corporation
    Inventor: Shinichi Mihara
  • Patent number: 7262925
    Abstract: An image lens array, from object side, comprises: a first positive meniscus plastic lens with a convex surface facing forward, a second negative meniscus plastic lens with a concave surface facing forward, a third positive meniscus plastic lens with a convex surface facing forward, and an infrared filter disposed in the lens barrel of the image lens array, the central thickness of the first and second lenses are: CT1<1.0 mm, CT2<0.6 mm. The radius of curvature of the front and back surfaces of the first lens are L1R1 and L1R2 that satisfy the condition as: |L1R1/L1R2|<0.5. The radius of curvature of the front and back surfaces of the third lens are L3R1 and L3R2 that satisfy the condition: |L3R1/L3R2|>0.3.
    Type: Grant
    Filed: October 18, 2005
    Date of Patent: August 28, 2007
    Assignee: Largan Precision Co., Ltd.
    Inventor: Yeo-Chih Huang