Patents by Inventor Chun-Hua TSAI

Chun-Hua TSAI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20190011660
    Abstract: An imaging lens module includes a plastic barrel, an optical lens assembly and a glue material. The plastic barrel includes an outer object-end surface, an outer image-end surface and an inner tube surface. The inner tube surface connects the outer object-end surface and the outer image-end surface, and includes a plurality of parallel inner surfaces. A plurality of stripe structures are disposed on and protruded from at least one of the parallel inner surfaces, wherein the stripe structures are regularly arranged along a circumferential direction of the parallel inner surface. The optical lens assembly includes a plurality of optical elements disposed in the plastic barrel and arranged along the optical axis, wherein an outer annular surface of at least one of the optical elements is disposed correspondingly to the stripe structures. The glue material is applied among the outer annular surface and the stripe structures.
    Type: Application
    Filed: September 12, 2018
    Publication date: January 10, 2019
    Inventors: Chun-Hua TSAI, Ming-Ta CHOU, Ming-Shun CHANG
  • Patent number: 10101557
    Abstract: An imaging lens module includes a plastic barrel, an optical lens assembly and a glue material. The plastic barrel includes an outer object-end surface, an outer image-end surface and an inner tube surface. The inner tube surface connects the outer object-end surface and the outer image-end surface, and includes a plurality of parallel inner surfaces. A plurality of stripe structures are disposed on and protruded from at least one of the parallel inner surfaces, wherein the stripe structures are regularly arranged along a circumferential direction of the parallel inner surface. The optical lens assembly includes a plurality of optical elements disposed in the plastic barrel and arranged along the optical axis, wherein an outer annular surface of at least one of the optical elements is disposed correspondingly to the stripe structures. The glue material is applied among the outer annular surface and the stripe structures.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: October 16, 2018
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Chun-Hua Tsai, Ming-Ta Chou, Ming-Shun Chang
  • Publication number: 20180295266
    Abstract: A plastic barrel including an object-end portion, a holder portion, and a tube portion is proposed. The object-end portion includes an outer object-end surface, an object-end hole, and an inner annular object-end surface. A part of the inner annular object-end surface is connected with the outer object-end surface and surrounding the object-end hole. The holder portion includes a bottom surface, a bottom hole, and an outer bottom side. The bottom surface surrounds the bottom hole and is connected with the outer bottom side. The holder portion further includes cut traces formed by partially removing gate portions. The tube portion includes inner annular surfaces and connects the object-end portion with the holder portion.
    Type: Application
    Filed: June 11, 2018
    Publication date: October 11, 2018
    Inventors: Chun-Hua TSAI, Ming-Ta CHOU
  • Publication number: 20180295267
    Abstract: A plastic barrel including an object-end portion, a holder portion, and a tube portion is proposed. The object-end portion includes an outer object-end surface, an object-end hole, and an inner annular object-end surface. A part of the inner annular object-end surface is connected with the outer object-end surface and surrounding the object-end hole. The holder portion includes a bottom surface, a bottom hole, and an outer bottom side. The bottom surface surrounds the bottom hole and is connected with the outer bottom side. The holder portion further includes cut traces formed by partially removing gate portions. The tube portion includes inner annular surfaces and connects the object-end portion with the holder portion.
    Type: Application
    Filed: June 11, 2018
    Publication date: October 11, 2018
    Inventors: Chun-Hua TSAI, Ming-Ta CHOU
  • Patent number: 10027865
    Abstract: A plastic barrel including an object-end portion, a holder portion, and a tube portion is proposed. The object-end portion includes an outer object-end surface, an object-end hole, and an inner annular object-end surface. A part of the inner annular object-end surface is connected with the outer object-end surface and surrounding the object-end hole. The holder portion includes a bottom surface, a bottom hole, and an outer bottom side. The bottom surface surrounds the bottom hole and is connected with the outer bottom side. The holder portion further includes cut traces formed by partially removing gate portions. The tube portion includes inner annular surfaces and connects the object-end portion with the holder portion.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: July 17, 2018
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Chun-Hua Tsai, Ming-Ta Chou
  • Publication number: 20180129011
    Abstract: An imaging lens module includes a plastic barrel, an optical lens assembly and a glue material. The plastic barrel includes an outer object-end surface, an outer image-end surface and an inner tube surface. The inner tube surface connects the outer object-end surface and the outer image-end surface, and includes a plurality of parallel inner surfaces. A plurality of stripe structures are disposed on and protruded from at least one of the parallel inner surfaces, wherein the stripe structures are regularly arranged along a circumferential direction of the parallel inner surface. The optical lens assembly includes a plurality of optical elements disposed in the plastic barrel and arranged along the optical axis, wherein an outer annular surface of at least one of the optical elements is disposed correspondingly to the stripe structures. The glue material is applied among the outer annular surface and the stripe structures.
    Type: Application
    Filed: February 14, 2017
    Publication date: May 10, 2018
    Inventors: Chun-Hua Tsai, Ming-Ta Chou, Ming-Shun Chang
  • Publication number: 20180039047
    Abstract: An imaging lens module includes an imaging lens assembly and a first optical component. The imaging lens assembly has an optical axis and includes a lens element. The lens element includes an effective optical portion, which is non-circular and disposed on a center of the lens element. The first optical component has a non-circular opening hole. The effective optical portion of the lens element of the imaging lens assembly is corresponded to the non-circular opening hole of the first optical component.
    Type: Application
    Filed: October 18, 2017
    Publication date: February 8, 2018
    Inventors: Cheng-Feng Lin, Chun-Hua Tsai, Ming-Ta Chou
  • Patent number: 9823447
    Abstract: An imaging lens module includes an imaging lens assembly and a first optical component. The imaging lens assembly has an optical axis and includes a lens element. The lens element includes an effective optical portion, which is non-circular and disposed on a center of the lens element. The first optical component has a non-circular opening hole. The effective optical portion of the lens element of the imaging lens assembly is corresponded to the non-circular opening hole of the first optical component.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: November 21, 2017
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Cheng-Feng Lin, Chun-Hua Tsai, Ming-Ta Chou
  • Publication number: 20170276903
    Abstract: An imaging lens assembly includes a dual molded lens barrel and at least one lens element. The dual molded lens barrel includes a light transmitting portion and a light absorbing portion. The light transmitting portion includes an effective optical section. The light absorbing portion is connected to the light transmitting portion, wherein a plastic material and a color of the light absorbing portion are different from a plastic material and a color of the light transmitting portion, and the light absorbing portion includes a barrel section. The lens element is disposed in the barrel section.
    Type: Application
    Filed: May 26, 2016
    Publication date: September 28, 2017
    Inventors: Ming-Shun Chang, Chun-Hua Tsai
  • Publication number: 20170038561
    Abstract: An imaging lens module includes an imaging lens assembly and a first optical component. The imaging lens assembly has an optical axis and includes a lens element. The lens element includes an effective optical portion, which is non-circular and disposed on a center of the lens element. The first optical component has a non-circular opening hole. The effective optical portion of the lens element of the imaging lens assembly is corresponded to the non-circular opening hole of the first optical component.
    Type: Application
    Filed: October 24, 2016
    Publication date: February 9, 2017
    Inventors: Cheng-Feng Lin, Chun-Hua Tsai, Ming-Ta Chou
  • Patent number: 9513454
    Abstract: An imaging lens module includes an imaging lens assembly and a first optical component. The imaging lens assembly has an optical axis and includes a lens element. The lens element includes an effective optical portion, which is non-circular and disposed on a center of the lens element. The first optical component has a non-circular opening hole. The effective optical portion of the lens element of the imaging lens assembly is corresponded to the non-circular opening hole of the first optical component.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: December 6, 2016
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Cheng-Feng Lin, Chun-Hua Tsai, Ming-Ta Chou
  • Publication number: 20160231526
    Abstract: An imaging lens module includes an imaging lens assembly and a first optical component. The imaging lens assembly has an optical axis and includes a lens element. The lens element includes an effective optical portion, which is non-circular and disposed on a center of the lens element. The first optical component has a non-circular opening hole. The effective optical portion of the lens element of the imaging lens assembly is corresponded to the non-circular opening hole of the first optical component.
    Type: Application
    Filed: April 14, 2016
    Publication date: August 11, 2016
    Inventors: Cheng-Feng Lin, Chun-Hua Tsai, Ming-Ta Chou
  • Publication number: 20160139359
    Abstract: An imaging lens module includes an imaging lens assembly and a first optical component. The imaging lens assembly has an optical axis and includes a lens element. The lens element includes an effective optical portion, which is non-circular and disposed on a center of the lens element. The first optical component has a non-circular opening hole. The effective optical portion of the lens element of the imaging lens assembly is corresponded to the non-circular opening hole of the first optical component.
    Type: Application
    Filed: January 9, 2015
    Publication date: May 19, 2016
    Inventors: Cheng-Feng Lin, Chun-Hua Tsai, Ming-Ta Chou
  • Patent number: 9341813
    Abstract: An imaging lens module includes an imaging lens assembly and a first optical component. The imaging lens assembly has an optical axis and includes a lens element. The lens element includes an effective optical portion, which is non-circular and disposed on a center of the lens element. The first optical component has a non-circular opening hole. The effective optical portion of the lens element of the imaging lens assembly is corresponded to the non-circular opening hole of the first optical component.
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: May 17, 2016
    Assignee: LARGAN PRECISION CO., LTD.
    Inventors: Cheng-Feng Lin, Chun-Hua Tsai, Ming-Ta Chou
  • Patent number: 9019637
    Abstract: A plastic lens barrel and method for manufacturing the plastic lens barrel are provided. The plastic lens barrel includes a front portion, a rear portion, a side portion, and at least three gate vestiges formed on at least one of the front portion, the rear portion, and the side portion. The front portion has a front opening. The rear portion has a rear opening. The side portion connects the front portion and the rear portion. An outermost diameter of the plastic lens barrel is Dmax and Dmax<10 mm. The method for manufacturing the plastic lens barrel by injection molding with a plurality of injection channels includes the steps of providing an injection mold of a plastic lens barrel structure having at least three injection channels and injecting a molding material into the injection mold through the injection channels to obtain the plastic lens barrel.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: April 28, 2015
    Assignee: Largan Precision Co., Ltd.
    Inventor: Chun-Hua Tsai
  • Publication number: 20140133040
    Abstract: A plastic lens barrel and method for manufacturing the plastic lens barrel are provided. The plastic lens barrel includes a front portion, a rear portion, a side portion, and at least three gate vestiges formed on at least one of the front portion, the rear portion, and the side portion. The front portion has a front opening. The rear portion has a rear opening. The side portion connects the front portion and the rear portion. An outermost diameter of the plastic lens barrel is Dmax and Dmax<10 mm. The method for manufacturing the plastic lens barrel by injection molding with a plurality of injection channels includes the steps of providing an injection mold of a plastic lens barrel structure having at least three injection channels and injecting a molding material into the injection mold through the injection channels to obtain the plastic lens barrel.
    Type: Application
    Filed: December 11, 2012
    Publication date: May 15, 2014
    Applicant: LARGAN PRECISION CO., LTD.
    Inventor: Chun-Hua TSAI