Patents Assigned to Largan Precision Co.
  • Patent number: 9400373
    Abstract: An optical imaging lens assembly, sequentially arranged from an object side to an image side along an optical axis, comprising: the first lens element with positive refractive power, the second lens element with negative refractive power having a convex object-side surface and a concave image-side surface, the third lens element with positive refractive power, the fourth lens element with negative refractive power having a concave object-side surface and a convex image-side surface, the fifth lens element with refractive power having a concave image-side surface, and both object-side surface and image-side surface being aspheric, wherein a stop and an image sensor disposed on an image plane are also provided. By such arrangements, the image pickup optical system satisfies conditions related to shorten the total length and to reduce the sensitivity for use in compact cameras and mobile phones with camera functionalities.
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: July 26, 2016
    Assignee: Largan Precision Co.
    Inventor: Hsin-Hsuan Huang
  • Publication number: 20160131877
    Abstract: An optical imaging lens assembly, sequentially arranged from an object side to an image side along an optical axis, comprising: the first lens element with positive refractive power, the second lens element with negative refractive power having a convex object-side surface and a concave image-side surface, the third lens element with positive refractive power, the fourth lens element with negative refractive power having a concave object-side surface and a convex image-side surface, the fifth lens element with refractive power having a concave image-side surface, and both object-side surface and image-side surface being aspheric, wherein a stop and an image sensor disposed on an image plane are also provided. By such arrangements, the image pickup optical system satisfies conditions related to shorten the total length and to reduce the sensitivity for use in compact cameras and mobile phones with camera functionalities.
    Type: Application
    Filed: October 1, 2013
    Publication date: May 12, 2016
    Applicant: Largan Precision Co.
    Inventor: Hsin-Hsuan Huang
  • Patent number: 9007701
    Abstract: An optical lens assembly for image pickup, sequentially arranged from an object side to an image side along the optical axis, comprising: the first lens element with negative refractive power has a convex object-side surface and a concave image-side surface; the second lens element with positive refractive power has bi-convex surfaces; and the third lens element with negative refractive power, made of plastic, and which has a convex object-side surface and a concave image-side surface with at least one thereof is aspheric. By such arrangements, the optical lens assembly for image pickup satisfies conditions related to shorten the total length and to reduce the sensitivity for use in compact cameras and mobile phones with camera functionalities.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: April 14, 2015
    Assignee: Largan Precision Co.
    Inventors: Chih-Wen Hsu, Ming-Ta Chou
  • Patent number: 8891177
    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: Grant
    Filed: December 21, 2011
    Date of Patent: November 18, 2014
    Assignee: Largan Precision Co.
    Inventor: Hsin-Hsuan Huang
  • Patent number: 8830595
    Abstract: An optical imaging system for pickup, sequentially arranged from an object side to an image side, including: 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.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: September 9, 2014
    Assignee: Largan Precision Co.
    Inventor: Hsin-Hsuan Huang
  • Patent number: 8773782
    Abstract: An optical lens assembly with a filter member for image taking, sequentially arranged from an object side to an image side along an optical axis, comprises: a filter member and a lens assembly. The lens assembly is set at the object side of the filter member. The lens assembly comprises at least three lens elements with refractive powers, wherein at least two lens elements are made of plastic, and have at least one aspheric object-side surface or image-side surface. By such arrangements, the optical lens assembly with a filter member for image taking can have good chromatic aberration correction and reduce the total length for applications to electronic products such as cameras and mobile phones requiring high resolution.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: July 8, 2014
    Assignee: Largan Precision Co.
    Inventors: Ming-Ta Chou, Tsung-Han Tsai
  • Patent number: 8743478
    Abstract: An optical lens for image pickup, sequentially arranged from an object side to an image side along the optical axis comprising: a first lens element with positive refractive power having a convex object-side surface; a second lens element with negative refractive power; a third lens element with refractive power; a plastic fourth lens element with positive refractive power having biconvex surfaces with at least one aspheric surface; and a plastic fifth lens element with negative refractive power having a concave image-side surface, with at least one aspheric surface and at least one inflection point. By such arrangements, the optical lens for image pickup satisfies conditions related to shorten the total length and to reduce the sensitivity for use in compact cameras and mobile phones with camera functionalities.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: June 3, 2014
    Assignee: Largan Precision Co.
    Inventors: Tsung-Han Tsai, Ming-Ta Chou
  • Patent number: 8654454
    Abstract: This invention discloses a thin optical lens assembly, comprising two lens elements with refractive power arranged from an object side to an image side along an optical axis, a bi-convex first lens element with a positive refractive power, a second lens element with a negative refractive power having a concave object-side surface and a convex image-side surface, and an image sensor on an image plane. Each of the two lens elements has two aspheric optical surfaces, and preferably is made of plastic. Additionally, the thin optical lens assembly satisfies the conditions of the present invention in order to reduce the total length and the sensitivity for its use in compact cameras and mobile phones with photographing functions.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: February 18, 2014
    Assignee: Largan Precision Co.
    Inventors: Hsiang-Chi Tang, Chun-Shan Chen, Hsin-Hsuan Huang
  • Publication number: 20140036378
    Abstract: An optical imaging lens assembly, sequentially arranged from an object side to an image side along an optical axis, comprising: the first lens element with positive refractive power, the second lens element with negative refractive power having a convex object-side surface and a concave image-side surface, the third lens element with positive refractive power, the fourth lens element with negative refractive power having a concave object-side surface and a convex image-side surface, the fifth lens element with refractive power having a concave image-side surface, and both object-side surface and image-side surface being aspheric, wherein a stop and an image sensor disposed on an image plane are also provided. By such arrangements, the image pickup optical system satisfies conditions related to shorten the total length and to reduce the sensitivity for use in compact cameras and mobile phones with camera functionalities.
    Type: Application
    Filed: October 1, 2013
    Publication date: February 6, 2014
    Applicant: Largan Precision Co.
    Inventor: Hsin-Hsuan Huang
  • Patent number: 8605367
    Abstract: An optical lens assembly for imaging pickup, sequentially arranged from an object side to an image side, comprising: a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with positive refractive power has a convex object-side surface. The second lens element has negative refractive power. The third lens element with refractive power has bi-aspheric surfaces. The fourth lens element with positive refractive power has a concave object-side surface and a convex image-side surface and both being aspheric. The fifth lens element with negative refractive power has a concave image-side surface, bi-aspheric surfaces and at least one inflection point. Therefore, the optical lens assembly for imaging pickup satisfies conditions related to shorten the total length and to reduce the sensitivity for use in compact cameras and mobile phones with camera functionalities.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: December 10, 2013
    Assignee: Largan Precision Co.
    Inventors: Tsung-Han Tsai, Ming-Ta Chou
  • Patent number: 8599498
    Abstract: An optical lens assembly for image taking, 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 negative refractive power having a convex object-side surfaces and a concave image-side surface; the third lens element with positive refractive power having a convex image-side surface; the fourth lens element with refractive power having two aspheric optical surfaces; the fifth lens element with refractive power having a concave object-side surface and both aspheric optical surfaces; an image sensor disposed on an image plane and a stop provided for imaging a photographed object; specific relations being satisfied. Thereby, the optical lens assembly for image taking has good aberration correction, and can shorten the total length for use in compact cameras and mobile phones requiring high resolution.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: December 3, 2013
    Assignee: Largan Precision Co.
    Inventor: Hsin-Hsuan Huang
  • Patent number: 8582219
    Abstract: An optical lens assembly for image capture, sequentially arranged from an object side to an image side, comprises: the first lens element with positive refractive power having a concave object-side surface and a convex image-side surface, the second lens element with negative refractive power having a concave object-side surfaces and a convex image-side surface, the third lens element with positive refractive power having a convex object-side surface and a concave image-side surface. Additionally, the optical lens assembly for image capture can satisfy several conditions. By such arrangements, the optical assembly for image capture can effectively correct the aberration and be applied to a compact image pickup device for image capturing.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: November 12, 2013
    Assignee: Largan Precision Co.
    Inventors: Tsung-Han Tsai, Dung Yi Hsieh, Ming-Ta Chou
  • Patent number: 8576498
    Abstract: An optical imaging lens assembly, sequentially arranged from an object side to an image side along an optical axis, comprising: the first lens element with positive refractive power having a convex object-side surface, the second lens element with negative refractive power having a convex object-side surface and a concave image-side surface, the third lens element with positive refractive power having a convex image-side surface, the fourth lens element with refractive power having both optical surfaces being aspheric, the fifth lens element with refractive power having a concave image-side surface and both optical surfaces being aspheric, wherein a stop and an image sensor disposed on an image plane are also provided. By such arrangements, the image pickup optical system satisfies conditions related to shorten the total length and to reduce the sensitivity for use in compact cameras and mobile phones with camera functionalities.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: November 5, 2013
    Assignee: Largan Precision Co.
    Inventor: Hsin-Hsuan Huang
  • Patent number: 8570667
    Abstract: An optical lens assembly for image capture, in order from an object side to an image side, comprising: a first lens element with positive refractive power having a concave object-side surface and a convex image-side surface, a second lens element with negative refractive power having a concave object-side surfaces and a convex image-side surface, a third lens element with positive refractive power having bi-convex surface. Additionally, the optical lens assembly for image capture satisfies several desirable conditions. By such arrangements, the optical assembly for image capture can effectively correct the aberration and be used as a compact image pickup device for image taking.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: October 29, 2013
    Assignee: Largan Precision Co.
    Inventors: Po-Lun Hsu, Ming-Ta Chou, Tsung-Han Tsai
  • Patent number: 8531786
    Abstract: An optical system for imaging pickup includes, sequentially arranged from an object side to an image side: the first lens element with positive refractive power having a convex image-side surface, the second lens element with refractive power having a concave image-side surface, the third lens element with refractive power, the fourth lens element with refractive power having both object-side and image-side surfaces being aspheric, and the fifth lens element with negative refractive power having a concave image-side surface, and both object-side and image-side surfaces being aspheric. By such arrangements, the optical system for imaging pickup satisfies conditions related to shorten the total length and to reduce the sensitivity for use in compact cameras and mobile phones with camera functionalities.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: September 10, 2013
    Assignee: Largan Precision Co.
    Inventors: Tsung-Han Tsai, Hsin-Hsuan Huang
  • Patent number: 8508859
    Abstract: An image pick-up optical lens assembly, sequentially arranged from an object side to an image side along an optical axis, comprises: a first lens element with a positive refractive power having a convex object-side surface, a second lens element with a negative refractive power, a third lens element with a positive refractive power, a meniscus fourth lens element with a positive refractive power having at least one aspherical optical surface, and a fifth lens element with a positive refractive power having at least one inflection point on the optical image-side surface. Additionally, the image pick-up optical lens assembly satisfies several particular conditions. The invention possesses features such as good aberration compensation, well-performed modulation transfer function and short total length of lens assembly applicable for compact cameras and mobile phones.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: August 13, 2013
    Assignee: Largan Precision Co.
    Inventors: Tsung-Han Tsai, Ming-Ta Chou
  • Patent number: 8488255
    Abstract: An image pickup optical system, sequentially arranged from an object side to an image side, comprises the first lens element with positive refractive power having a convex object-side surface, the second lens element with negative refractive power having a concave object-side surface and a convex image-side surface, the third lens element with refractive power, the fourth lens element with refractive power having a concave image-side surface, at least one of the surfaces being aspheric, the fifth lens element with refractive power having a concave image-side surface, at least one of the surfaces being aspheric and having at least one inflection point. Each of the five lens elements may be made of plastic with aspherical surfaces. The image pickup optical system satisfies conditions related to the reduction of the total length and the system sensitivity for use in compact cameras and mobile phone cameras functionalities.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: July 16, 2013
    Assignee: Largan Precision Co.
    Inventor: Tsung-Han Tsai
  • Patent number: 8482863
    Abstract: An imagery optical system, sequentially from an object side to an image side on an optical axis comprising: the first lens element with positive refractive power, the second lens element with positive refractive power, the third lens element, the fourth lens element, and the fifth lens element having at least one inflection point. Each of the five lens elements may be made of plastic and comes with bi-aspheric surfaces. The imagery optical system satisfies conditions related to shorten the total length and to reduce the sensitivity for use in compact cameras and mobile phones with a camera function.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: July 9, 2013
    Assignee: Largan Precision Co.
    Inventors: Tsung-Han Tsai, Hsin-Hsuan Huang
  • Patent number: 8411377
    Abstract: An optical lens assembly for image photographing, 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 with positive refractive power; a third lens element with positive refractive power having a convex image-side surface; a plastic fourth lens element with negative refractive power having a concave image-side surface, both object-side and image-side surfaces being aspheric, and having at least one inflection point. Additionally, the optical lens assembly for photographing image has an image sensor on the image plane for imaging a photographed object and satisfies specific conditions. Thereby, this invention has a high resolving power and can shorten the total length of the lens assembly for using in camera and mobile phone camera with well photographing abilities.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: April 2, 2013
    Assignee: Largan Precision Co.
    Inventors: Tsung-Han Tsai, Hsin-Hsuan Huang
  • Patent number: 8395853
    Abstract: An image pick-up optical system, in order from an object side to an image side, along an optical axis comprising: the first lens element with negative refractive power having a convex object-side surface and a concave image-side surface, the second lens element with positive refractive power, a bi-convex third lens element with positive refractive power, the fourth lens element with negative refractive power having a concave object-side surface, a plastic fifth lens element with positive refractive power having a convex object-side surface and at least one aspherical optical surface. Additionally, the image pick-up optical system satisfies conditions related to shorten the total length and to enhance the ability of wider field of view for use in compact cameras and mobile phones.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: March 12, 2013
    Assignee: Largan Precision Co.
    Inventors: Chun-Shan Chen, Ming-Ta Chou, Hsin-Hsuan Huang