Patents by Inventor Tao-Hung Kuo
Tao-Hung Kuo 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).
-
Patent number: 9720215Abstract: 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: GrantFiled: November 27, 2015Date of Patent: August 1, 2017Assignee: Coretronic CorporationInventors: Tao-Hung Kuo, Ching-Chuan Wei, Chuan-Te Cheng
-
Publication number: 20170153429Abstract: 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: ApplicationFiled: November 27, 2015Publication date: June 1, 2017Inventors: Tao-Hung Kuo, Ching-Chuan Wei, Chuan-Te Cheng
-
Patent number: 9594233Abstract: 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: GrantFiled: September 25, 2015Date of Patent: March 14, 2017Assignee: Coretronic CorporationInventors: Tao-Hung Kuo, Tzu-Yuan Lin, Ching-Chuan Wei, Chuan-Te Cheng
-
Publication number: 20170068077Abstract: 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: ApplicationFiled: July 5, 2016Publication date: March 9, 2017Inventors: Tao-Hung Kuo, Tzu-Yuan Lin, Hsin-Wen Tsai, Ching-Chuan Wei, Chuan-Te Cheng
-
Publication number: 20170038564Abstract: 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: ApplicationFiled: June 1, 2016Publication date: February 9, 2017Inventors: Tao-Hung Kuo, Yi-Chin Chen, Ching-Chuan Wei, Chuan-Te Cheng
-
Publication number: 20160313542Abstract: 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: ApplicationFiled: April 21, 2016Publication date: October 27, 2016Inventors: Tao-Hung Kuo, Hsin-Wen Tsai, Ching-Chuan Wei, Chuan-Te Cheng
-
Patent number: 9470874Abstract: 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: GrantFiled: October 7, 2015Date of Patent: October 18, 2016Assignee: Coretronic CorporationInventors: Tao-Hung Kuo, Tzu-Yuan Lin, Ching-Chuan Wei, Chuan-Te Cheng
-
Publication number: 20160202456Abstract: 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: ApplicationFiled: November 13, 2015Publication date: July 14, 2016Inventors: Tao-Hung Kuo, Hsin-Wen Tsai, Ching-Chuan Wei, Chuan-Te Cheng
-
Publication number: 20160202452Abstract: 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: ApplicationFiled: October 7, 2015Publication date: July 14, 2016Inventors: Tao-Hung Kuo, Tzu-Yuan Lin, Ching-Chuan Wei, Chuan-Te Cheng
-
Publication number: 20160170187Abstract: 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: ApplicationFiled: September 25, 2015Publication date: June 16, 2016Inventors: Tao-Hung Kuo, Tzu-Yuan Lin, Ching-Chuan Wei, Chuan-Te Cheng
-
Patent number: 9028073Abstract: A projection apparatus includes an optical engine base, a light source, a light valve, a lens module, and a fan. The light source is disposed at the optical engine base for emitting an illumination beam. The light valve is disposed at the optical engine base for converting the illumination beam into an image beam. The lens module is disposed at the optical engine base and includes a lens barrel and a lens assembly disposed in the lens barrel for converting the image beam into a projection beam. The fan is disposed at the optical engine base, and adjacent to the lens module. The fan is used for providing an air flow to cool the lens module.Type: GrantFiled: March 21, 2012Date of Patent: May 12, 2015Assignee: Coretronic CorporationInventors: Chuan-Te Cheng, Tao-Hung Kuo
-
Patent number: 9013798Abstract: A projection lens disposed between an enlarged side and a reduced side is provided. The projection lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, which are sequentially arranged from the enlarged side to the reduced side. Refractive powers of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are respectively negative, positive, positive, negative, positive and positive. A focal length of the third lens is greater than or equal to 20 mm and is less than or equal to 200 mm. An optical engine is also provided.Type: GrantFiled: September 27, 2013Date of Patent: April 21, 2015Assignee: Coretronic CorporationInventor: Tao-Hung Kuo
-
Patent number: 8982470Abstract: A projection apparatus including an image source, an imaging module and a beam splitting module is provided. The image source provides an image beam. The imaging module is disposed on a transmission path of the image beam and has an aperture stop. The beam splitting module is disposed on the transmission path of the image beam and located on or near the aperture stop. The beam splitting module includes a plurality of aperture stop sub-regions, and the beam splitting module separates a plurality of image sub-beams of the image beam irradiating these different aperture stop sub-regions. These image sub-beams respectively propagate towards different directions after travelling to these aperture stop sub-regions.Type: GrantFiled: November 19, 2012Date of Patent: March 17, 2015Assignee: Coretronic CorporationInventors: Chuan-Te Cheng, Tao-Hung Kuo, Tien-Liang Hsieh
-
Publication number: 20140092483Abstract: A projection lens disposed between an enlarged side and a reduced side is provided. The projection lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, which are sequentially arranged from the enlarged side to the reduced side. Refractive powers of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are respectively negative, positive, positive, negative, positive and positive. A focal length of the third lens is greater than or equal to 20 mm and is less than or equal to 200 mm. An optical engine is also provided.Type: ApplicationFiled: September 27, 2013Publication date: April 3, 2014Applicant: Coretronic CorporationInventor: Tao-Hung Kuo
-
Publication number: 20130271844Abstract: A projection apparatus including an image source, an imaging module and a beam splitting module is provided. The image source provides an image beam. The imaging module is disposed on a transmission path of the image beam and has an aperture stop. The beam splitting module is disposed on the transmission path of the image beam and located on or near the aperture stop. The beam splitting module includes a plurality of aperture stop sub-regions, and the beam splitting module separates a plurality of image sub-beams of the image beam irradiating these different aperture stop sub-regions. These image sub-beams respectively propagate towards different directions after travelling to these aperture stop sub-regions.Type: ApplicationFiled: November 19, 2012Publication date: October 17, 2013Inventors: Chuan-Te Cheng, Tao-Hung Kuo, Tien-Liang Hsieh
-
Publication number: 20130003025Abstract: A projection apparatus includes an optical engine base, a light source, a light valve, a lens module, and a fan. The light source is disposed at the optical engine base for emitting an illumination beam. The light valve is disposed at the optical engine base for converting the illumination beam into an image beam. The lens module is disposed at the optical engine base and includes a lens barrel and a lens assembly disposed in the lens barrel for converting the image beam into a projection beam. The fan is disposed at the optical engine base, and adjacent to the lens module. The fan is used for providing an air flow to cool the lens module.Type: ApplicationFiled: March 21, 2012Publication date: January 3, 2013Applicant: CORETRONIC CORPORATIONInventors: Chuan-Te Cheng, Tao- Hung Kuo
-
Patent number: 7466501Abstract: A fixed-focus lens including a first lens group, a second lens group, and a third lens group arranged from an object side to an image side in sequence is provided. The first lens group has a negative refractive power, and includes at least one aspheric lens. The second lens group has a positive refractive power, and includes a lens. The third lens group has a positive refractive power, and includes a triple cemented lens. An effective focal length (EFL) of the fixed-focus lens is f. An EFL of the first lens group is f1. An EFL of the second lens group is f2. An EFL of the third lens group is f3. An axial distance between the first lens group and the second lens group is d. The fixed-focus lens satisfies: 2.5<|f1/f|<4.5, 7.5<f2/f<10, 4.5<f3/f<8.5, and 13<d/f<14.Type: GrantFiled: January 16, 2008Date of Patent: December 16, 2008Assignee: Young Optics Inc.Inventors: Yi-Hao Kang, Tao-Hung Kuo