Patents by Inventor Ching-Chuan Wei

Ching-Chuan Wei 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: 20210072498
    Abstract: The disclosure proposes a projection lens including a first lens group, a second lens group and a third lens group arranged in sequence along an optical axis from a magnification side to a reduction side. The first lens group includes a plurality of lenses having refractive power. The second lens group includes at least one lens having refractive power. The third lens group includes a diaphragm, and a plurality of lenses having refractive power, wherein an intermediate image is formed between the first and third lens groups, and the refractive powers of the first, second and third lens groups are positive, positive, and positive, respectively. A projection device including the above projection lens is also proposed.
    Type: Application
    Filed: September 3, 2020
    Publication date: March 11, 2021
    Applicant: Coretronic Corporation
    Inventors: Ching-Chuan Wei, Yi-Chin Chen
  • Publication number: 20200379224
    Abstract: A zoom projection lens with eleven lens elements is provided. The zoom projection lens sequentially includes a first lens group, a second lens group, a third lens group, an aperture stop, a fourth lens group and a fifth lens group along an optical axis from a screen side to an image source side. The first lens group has a negative refractive power and includes three lens elements. The second lens group has a positive refractive power and includes one lens element. The third lens group has a positive refractive power and includes one lens element. The fourth lens group has a negative refractive power and includes four lens elements. The fifth lens group has a positive refractive power and includes two lens elements. A first lens element in the first lens group is an aspheric lens made of plastic.
    Type: Application
    Filed: May 20, 2020
    Publication date: December 3, 2020
    Applicant: Coretronic Corporation
    Inventors: Li-Lun Hu, Ching-Chuan Wei, Meng-Feng Chung, Tao-Hung Kuo, Chuan-Te Cheng
  • Patent number: 9915810
    Abstract: A projection lens and a projection apparatus are provided. The projection lens has a screen side and an image side. The projection lens includes a first lens group, a second lens group, and a third lens group. The first lens group disposed between the screen side and the image side includes a first, a second, and a third lenses arranged sequentially from the screen side to the image side. The second lens group disposed between the first lens group and the image side includes a fourth, a fifth, a sixth, a seventh, an eighth, a ninth, and a tenth lenses arranged sequentially from the screen side to the image side. The third lens group disposed between the second lens group and the image side includes an eleventh and a twelfth lenses, and a distance between the twelfth lens and the light valve is a constant.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: March 13, 2018
    Assignee: Coretronic Corporation
    Inventors: Tao-Hung Kuo, Hsin-Wen Tsai, Ching-Chuan Wei, Chuan-Te Cheng
  • Patent number: 9798118
    Abstract: A projection display apparatus includes a light source module, an optical engine module and a projection lens module. The optical engine module includes a prism and a light valve. The projection lens module includes a first lens group and a second lens group. The first lens group is disposed between the screen end and the imaging end. The first lens group includes a first lens, a second lens and a third lens, which are sequentially disposed from the screen end to the imaging end and have negative, negative and positive refractive powers, respectively. The second lens group is disposed between the first lens group and the imaging end and has a positive refractive power. The second lens group includes a fourth lens, a fifth lens and a sixth lens, which are sequentially disposed from the screen end to the imaging end and have negative, positive and positive refractive powers, respectively.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: October 24, 2017
    Assignee: Coretronic Corporation
    Inventors: Tao-Hung Kuo, Yi-Chin Chen, Ching-Chuan Wei, Chuan-Te Cheng
  • Patent number: 9791680
    Abstract: A projection lens disposed between a screen side and an image side and including a first lens group and a second lens group is provided. Refractive powers of the first lens group and the second lens group are respectively negative and positive. The first lens group includes a first lens, a second lens, and a third lens arranged in sequence from the screen side to the image side, and refractive powers thereof are respectively negative, negative, and positive. The second lens group is disposed between the first lens group and the image side and includes a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, and a tenth lens arranged in sequence from the screen side to the image side, and refractive powers thereof are respectively positive, positive, negative, negative, negative, positive, and positive. A projection apparatus is provided.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: October 17, 2017
    Assignee: Coretronic Corporation
    Inventors: Tao-Hung Kuo, Tzu-Yuan Lin, Hsin-Wen Tsai, Ching-Chuan Wei, Chuan-Te Cheng
  • Patent number: 9733457
    Abstract: A zoom lens includes a first lens group and a second lens group. The first lens group has a negative refractive power and includes a first lens, a second lens, and a third lens arranged in sequence from a magnified side to a minified side, refractive powers of which are negative, negative, and positive, respectively. The second lens group has a positive refractive power and is disposed between the first lens group and the minified side. The second lens group includes a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, and a tenth lens arranged in sequence from the magnified side to the minified side, refractive powers of which are positive, negative, positive, negative, positive, negative, and positive, respectively. The first lens and the tenth lens are aspheric lenses, and the second lens to the ninth lens are spherical lenses.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: August 15, 2017
    Assignee: Coretronic Corporation
    Inventors: Tao-Hung Kuo, Hsin-Wen Tsai, Ching-Chuan Wei, Chuan-Te Cheng
  • Patent number: 9720215
    Abstract: A zoom lens including first to seventh lens units arranged in this order from an object side to an image side is provided. The first to seventh lens units respectively have refractive powers of negative, positive, negative, positive, positive, negative. The first to seventh lens units are disposed along an optical axis of the zoom lens, and a distance between the seventh lens and the image side is fixed, and the first lens unit, the second lens unit, the third lens unit, the fourth lens unit, the fifth lens unit and the sixth lens unit are adapted to move along the optical axis between the object side and the image side.
    Type: Grant
    Filed: November 27, 2015
    Date of Patent: August 1, 2017
    Assignee: Coretronic Corporation
    Inventors: Tao-Hung Kuo, Ching-Chuan Wei, Chuan-Te Cheng
  • Publication number: 20170153429
    Abstract: A zoom lens including first to seventh lens units arranged in this order from an object side to an image side is provided. The first to seventh lens units respectively have refractive powers of negative, positive, negative, positive, positive, negative. The first to seventh lens units are disposed along an optical axis of the zoom lens, and a distance between the seventh lens and the image side is fixed, and the first lens unit, the second lens unit, the third lens unit, the fourth lens unit, the fifth lens unit and the sixth lens unit are adapted to move along the optical axis between the object side and the image side.
    Type: Application
    Filed: November 27, 2015
    Publication date: June 1, 2017
    Inventors: Tao-Hung Kuo, Ching-Chuan Wei, Chuan-Te Cheng
  • Patent number: 9594233
    Abstract: A zoom lens including a first lens group and a second lens group is provided. The first lens group having a negative refractive power is disposed between an object side and an image side and includes a first lens having a negative refractive power. The second lens group having a positive refractive power is disposed between the first lens group and the image side and includes a second lens, a third lens, a fourth lens and a fifth lens arranged in sequence from the object side to the image side. Refractive powers of the second lens, the third lens, the fourth lens and the fifth lens are positive, positive, negative and positive in sequence, wherein the first lens has a surface facing the object side, a radius of curvature of the surface is R1, and |R1|>700 mm.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: March 14, 2017
    Assignee: Coretronic Corporation
    Inventors: Tao-Hung Kuo, Tzu-Yuan Lin, Ching-Chuan Wei, Chuan-Te Cheng
  • Publication number: 20170068077
    Abstract: A projection lens disposed between a screen side and an image side and including a first lens group and a second lens group is provided. Refractive powers of the first lens group and the second lens group are respectively negative and positive. The first lens group includes a first lens, a second lens, and a third lens arranged in sequence from the screen side to the image side, and refractive powers thereof are respectively negative, negative, and positive. The second lens group is disposed between the first lens group and the image side and includes a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, and a tenth lens arranged in sequence from the screen side to the image side, and refractive powers thereof are respectively positive, positive, negative, negative, negative, positive, and positive. A projection apparatus is provided.
    Type: Application
    Filed: July 5, 2016
    Publication date: March 9, 2017
    Inventors: Tao-Hung Kuo, Tzu-Yuan Lin, Hsin-Wen Tsai, Ching-Chuan Wei, Chuan-Te Cheng
  • Publication number: 20170038564
    Abstract: A projection display apparatus includes a light source module, an optical engine module and a projection lens module. The optical engine module includes a prism and a light valve. The projection lens module includes a first lens group and a second lens group. The first lens group is disposed between the screen end and the imaging end. The first lens group includes a first lens, a second lens and a third lens, which are sequentially disposed from the screen end to the imaging end and have negative, negative and positive refractive powers, respectively. The second lens group is disposed between the first lens group and the imaging end and has a positive refractive power. The second lens group includes a fourth lens, a fifth lens and a sixth lens, which are sequentially disposed from the screen end to the imaging end and have negative, positive and positive refractive powers, respectively.
    Type: Application
    Filed: June 1, 2016
    Publication date: February 9, 2017
    Inventors: Tao-Hung Kuo, Yi-Chin Chen, Ching-Chuan Wei, Chuan-Te Cheng
  • Publication number: 20160313542
    Abstract: A projection lens and a projection apparatus are provided. The projection lens has a screen side and an image side. The projection lens includes a first lens group, a second lens group, and a third lens group. The first lens group disposed between the screen side and the image side includes a first, a second, and a third lenses arranged sequentially from the screen side to the image side. The second lens group disposed between the first lens group and the image side includes a fourth, a fifth, a sixth, a seventh, an eighth, a ninth, and a tenth lenses arranged sequentially from the screen side to the image side. The third lens group disposed between the second lens group and the image side includes an eleventh and a twelfth lenses, and a distance between the twelfth lens and the light valve is a constant.
    Type: Application
    Filed: April 21, 2016
    Publication date: October 27, 2016
    Inventors: Tao-Hung Kuo, Hsin-Wen Tsai, Ching-Chuan Wei, Chuan-Te Cheng
  • Patent number: 9470874
    Abstract: A fixed-focus lens including a first lens group, a second lens group and an aperture stop is provided. The first lens group has a positive refractive power, and includes a first lens, a second lens and a third lens arranged in sequence from a magnified side to a reduced side. The second lens group has a positive refractive power, and includes a fourth lens, a fifth lens, a sixth lens and a seventh lens arranged in sequence from the magnified side to the reduced side. A product of a refractive power and a slope of a refractive index changing with a temperature change of any one lens of the second lens group is P×(dn/dt), and a sum of P×(dn/dt) of the lenses of the second lens group is less than 0. The aperture stop is disposed between the first lens group and the second lens group.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: October 18, 2016
    Assignee: Coretronic Corporation
    Inventors: Tao-Hung Kuo, Tzu-Yuan Lin, Ching-Chuan Wei, Chuan-Te Cheng
  • Publication number: 20160202456
    Abstract: A zoom lens includes a first lens group and a second lens group. The first lens group has a negative refractive power and includes a first lens, a second lens, and a third lens arranged in sequence from a magnified side to a minified side, refractive powers of which are negative, negative, and positive, respectively. The second lens group has a positive refractive power and is disposed between the first lens group and the minified side. The second lens group includes a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, and a tenth lens arranged in sequence from the magnified side to the minified side, refractive powers of which are positive, negative, positive, negative, positive, negative, and positive, respectively. The first lens and the tenth lens are aspheric lenses, and the second lens to the ninth lens are spherical lenses.
    Type: Application
    Filed: November 13, 2015
    Publication date: July 14, 2016
    Inventors: Tao-Hung Kuo, Hsin-Wen Tsai, Ching-Chuan Wei, Chuan-Te Cheng
  • Publication number: 20160202452
    Abstract: A fixed-focus lens including a first lens group, a second lens group and an aperture stop is provided. The first lens group has a positive refractive power, and includes a first lens, a second lens and a third lens arranged in sequence from a magnified side to a reduced side. The second lens group has a positive refractive power, and includes a fourth lens, a fifth lens, a sixth lens and a seventh lens arranged in sequence from the magnified side to the reduced side. A product of a refractive power and a slope of a refractive index changing with a temperature change of any one lens of the second lens group is P×(dn/dt), and a sum of P×(dn/dt) of the lenses of the second lens group is less than 0. The aperture stop is disposed between the first lens group and the second lens group.
    Type: Application
    Filed: October 7, 2015
    Publication date: July 14, 2016
    Inventors: Tao-Hung Kuo, Tzu-Yuan Lin, Ching-Chuan Wei, Chuan-Te Cheng
  • Publication number: 20160170187
    Abstract: A zoom lens including a first lens group and a second lens group is provided. The first lens group having a negative refractive power is disposed between an object side and an image side and includes a first lens having a negative refractive power. The second lens group having a positive refractive power is disposed between the first lens group and the image side and includes a second lens, a third lens, a fourth lens and a fifth lens arranged in sequence from the object side to the image side. Refractive powers of the second lens, the third lens, the fourth lens and the fifth lens are positive, positive, negative and positive in sequence, wherein the first lens has a surface facing the object side, a radius of curvature of the surface is R1, and |R1|>700 mm.
    Type: Application
    Filed: September 25, 2015
    Publication date: June 16, 2016
    Inventors: Tao-Hung Kuo, Tzu-Yuan Lin, Ching-Chuan Wei, Chuan-Te Cheng
  • Publication number: 20150326019
    Abstract: A solar anti-shadowing circuit coupled to multiple solar cell units connected in series. The circuit includes a metal oxide semiconductor (MOS) switching group. The switching group includes multiple MOS switches, and each of switches is connected to the corresponding solar cell unit in parallel. The circuit also includes a driving unit group, and the driving unit group includes multiple driving units. Each of the multiple driving units respectively outputs a control signal to the corresponding switch. When a shadowing event happen, the driving unit outputs the control signal to the corresponding MOS switch so as to electrically connect the MOS switch.
    Type: Application
    Filed: September 12, 2014
    Publication date: November 12, 2015
    Applicant: SOYO LINK ENERGY CO., LTD.
    Inventors: Ching-Chuan Wei, Tien-Tsai Lee
  • Patent number: 9152031
    Abstract: A light source module includes a light-emitting device, a wavelength conversion device and a polarization and color separation unit. The light-emitting device provides an excitation beam including a first portion beam having a first polarization direction. The wavelength conversion device includes a first wavelength conversion area and a polarization conversion area. When the first portion beam irradiates the first wavelength conversion area, the first portion beam is converted into a first color beam. When the first portion beam irradiates the polarization conversion area, the first polarization direction of the first portion beam is converted to a second polarization direction. The polarization and color separation unit is disposed between the wavelength conversion device and the light-emitting device, and transmits the first portion beam with the first polarization direction, and reflects the first portion beam with the second polarization direction and the first color beam to the same direction.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: October 6, 2015
    Assignee: Coretronic Corporation
    Inventors: Ching-Chuan Wei, Shu-Min Chen, Hao-Wei Chiu, Ko-Shun Chen
  • Publication number: 20130176540
    Abstract: A light source module includes a light-emitting device, a wavelength conversion device and a polarization and color separation unit. The light-emitting device provides an excitation beam including a first portion beam having a first polarization direction. The wavelength conversion device includes a first wavelength conversion area and a polarization conversion area. When the first portion beam irradiates the first wavelength conversion area, the first portion beam is converted into a first color beam. When the first portion beam irradiates the polarization conversion area, the first polarization direction of the first portion beam is converted to a second polarization direction. The polarization and color separation unit is disposed between the wavelength conversion device and the light-emitting device, and transmits the first portion beam with the first polarization direction, and reflects the first portion beam with the second polarization direction and the first color beam to the same direction.
    Type: Application
    Filed: September 7, 2012
    Publication date: July 11, 2013
    Applicant: CORETRONIC CORPORATION
    Inventors: Ching-Chuan Wei, Shu-Min Chen, Hao-Wei Chiu, Ko-Shun Chen
  • Publication number: 20130035600
    Abstract: A method to measure arterial elasticity and arteriosclerosis includes a measuring step and a sampling step to obtain a pulse waveform which represents the displacement of an arterial wall during elastic dilation and contraction. The method of the invention also includes a first differentiation step and a second differentiation step to respectively obtain a first differential pulse waveform and a second differential pulse waveform. The evaluation data is obtained when the arterial wall dilates to the maximum thereof. In an evaluating step, the maximum elastic force represented by the second differentiation of the maximum displacement of the arterial wall is divided by the maximum displacement of the arterial wall to obtain an arterial elasticity coefficient to determine extent of arteriosclerosis and prevent cardiovascular diseases. The present invention has advantages of noninvasive and direct evaluation to arterial elasticity, easy operation, high accuracy and low cost and thus has very high utility.
    Type: Application
    Filed: October 18, 2011
    Publication date: February 7, 2013
    Inventor: Ching-Chuan Wei