Patents by Inventor Tien-Chia Liu

Tien-Chia Liu 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: 20140084134
    Abstract: There is provided a miniaturized optical system including a protection cover, a light source, an image sensor and at least one interference film. The protection cover has a first surface and a second surface. The light source and the image sensor are disposed opposite to the first surface of the protection cover. The interference film is disposed between the light source and the protection cover to allow the light source to form a predetermined light shape in front of the second surface of the protection cover and/or disposed between the image sensor and the protection cover to allow the image sensor to receive light of a predetermined range in front of the second surface of the protection cover.
    Type: Application
    Filed: August 23, 2013
    Publication date: March 27, 2014
    Applicant: PixArt Imaging Inc.
    Inventors: Hui-Hsuan CHEN, Tien-Chia LIU, Wen-Yen SU
  • Publication number: 20140062961
    Abstract: An optical touch control apparatus, which comprises: a light source; a light guiding board, for emitting the light, including at least one reflecting region for generating reflected light for adjusting; a detecting surface, for generating an object image when a distance between a object and the detecting surface is lower than a predetermined distance; an image sensor, for computing a brightness for adjusting that the light source generates to the light guiding board according to the reflected light for adjusting, and for catching a plurality of frames of the object image; and a control unit, for adjusting the light source according to the brightness for adjusting, or for adjusting the image sensor according to the brightness for adjusting, such that the image sensor can sense a plurality of adjusted frames; wherein the control unit computes a location of the object on the detecting surface according to the adjusted frames.
    Type: Application
    Filed: February 20, 2013
    Publication date: March 6, 2014
    Applicant: PIXART IMAGING INC.
    Inventors: Ming-Tsan Kao, En-Feng Hsu, Tien-Chia Liu, Hsin-Chia Chen
  • Publication number: 20140055408
    Abstract: An electronic button applied to a touch panel is disclosed in the present invention. The electronic button includes a switch and a transparent conductive structure. The switch is electrically connected to the touch panel for switching functions of the touch panel. The transparent conductive structure is electrically connected to the switch and disposed on a surface of the touch panel. The transparent conductive structure transmits a current, and a reference value of the current is varied when an external object contacts the transparent conductive structure, so as to drive the switch to power on and to power off the touch panel.
    Type: Application
    Filed: February 20, 2013
    Publication date: February 27, 2014
    Applicant: PIXART IMAGING INC.
    Inventors: Tien-Chia Liu, Hung-Ching Lai, Chun-Chen Chen
  • Publication number: 20130334406
    Abstract: A light guide module is disclosed in the present invention. The light guide module includes a light guide plate, and an optical reflecting structure disposed on a bottom of the light guide plate. A beam is transmitted into the light guide plate through its side surface. Total internal reflection characters of the light guide plate is interfered by the optical reflecting structure, so that the beam can emit out of the light guide plate through a light emitting surface of the light guide plate. The optical reflecting structure includes a first reflecting layer disposed on the bottom, and a second reflecting layer formed above the first reflecting layer. The beam is absorbed by the first reflecting layer. The beam is reflected out of the light emitting surface via the second reflecting layer, and the second reflecting layer is between the first reflecting layer and the light guide plate.
    Type: Application
    Filed: November 29, 2012
    Publication date: December 19, 2013
    Applicant: PIXART IMAGING INC.
    Inventors: Tien-Chia Liu, Hui-Hsuan Chen
  • Publication number: 20130241884
    Abstract: An optical touch apparatus includes a first light source, a second light source, a light guide device, a light reflecting device and an image sensing module. The first light source emits first light beam which travels within the light guide device and is reflective by an object close to or in contact with a surface of the light guide device to become a first image light beam. The first image light beam is reflected by a light reflecting device. The image sensing module receives the first image light beam. The second light source emits a second light beam, wherein when the optical touch apparatus moves on a working surface, the second light beam is reflective by the working surface to form a second image light beam which is received by the same image sensing module.
    Type: Application
    Filed: February 25, 2013
    Publication date: September 19, 2013
    Applicant: PixArt Imaging Incorporation
    Inventors: Ming-Tsan Kao, Hui-Hsuan Chen, Tien-Chia Liu, Hsin-Chia Chen
  • Publication number: 20130038535
    Abstract: An optical pointing device for detecting a displacement between the optical pointing device and a working surface includes a casing, a light emitting component and a light sensing component. The casing includes a transparent element. A light emitting hole is defined through the casing and located at the same side with the transparent element. The light emitting component is located inside the casing and emits a light beam. The light beam passes through the light emitting hole and is reflected by the working surface to pass through the transparent element. The light sensing component is located inside the casing. The transparent element is located between the light sensing component and the working surface to cover the light sensing component. The light sensing component has a light sensing surface configured for sensing the light beam reflected by the working surface.
    Type: Application
    Filed: October 20, 2011
    Publication date: February 14, 2013
    Applicant: PixArt Imaging Inc.
    Inventors: Hui-Hsuan Chen, Tien-Chia Liu
  • Patent number: 8243016
    Abstract: According to the claimed invention, an optical pointing device includes a cover having a transparent part, and a sensing component installed inside the cover. The sensing component includes a light emitting module for emitting light, and a light sensing module for sensing light transmitted from the transparent part. The optical pointing device further includes a light guiding component installed between the sensing component and the cover. The light guiding component includes a reflecting part for reflecting the light emitted from the light emitting module to the transparent part, and a condensing part integrated with the reflecting part monolithically for condensing light transmitted from the transparent part to the light sensing module. The light emitted from the light emitting module is reflected to the transparent part by the reflecting part and then reflected back to the transparent part and the condensing part by a shelter disposed above the cover.
    Type: Grant
    Filed: May 17, 2009
    Date of Patent: August 14, 2012
    Assignee: PixArt Imaging Inc.
    Inventors: Hui-Hsuan Chen, Tien-Chia Liu
  • Publication number: 20120162072
    Abstract: An optical pointing device including a light source, an optical transfer assembly, a light beam splitter, and an image sensor is provided. The light source provides an illumination light beam. The optical transfer assembly concentrates the illumination light beam. The light beam splitter is disposed on a transmission path of the illumination light beam for splitting the illumination light beam into a first light beam and a second light beam. The image sensor is capable of sensing the first and the second light beams. When the optical pointing device is used on a reflective surface, the first light beam is reflected to the lens by the reflective surface and then is received by the image sensor; when the optical pointing device is used on a transparent body above the reflective surface, the second light beam would be received by the image sensor.
    Type: Application
    Filed: March 5, 2012
    Publication date: June 28, 2012
    Applicant: PIXART IMAGING INC.
    Inventors: Hui-Hsuan Chen, Tien-Chia Liu, Hung-Ching Lai, Yen-Min Chang
  • Patent number: 8207941
    Abstract: In a lens module and an optical mouse using the lens module, the lens module includes a substrate, a light guide rod and a carrying base. The light guide rod is extended from the substrate along a predetermined direction and has a light incident surface. The carrying base is connected with the light incident surface and has a carrying surface for carrying a light source of the optical mouse. The substrate, the light guide rod and the carrying base are integrated into one piece. The lens module has lower cost.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: June 26, 2012
    Assignee: Pixart Imaging Inc.
    Inventors: Tien-Chia Liu, Hung-Ching Lai, Hui-Hsuan Chen
  • Publication number: 20120154282
    Abstract: An optical scrolling module includes a prism, a light source, an image sensor and a first condenser. The prism is disposed at an opening of an upper shell of a mouse and has a light incident surface, a reflective surface, a contact surface and a light emitting surface. The contact and light incident surfaces are respectively connected between the reflective and light emitting surfaces. The contact surface is exposed by the opening. A light beam from the light source is transmitted to the contact surface via the light incident and reflective surfaces. When an object with a pattern structure puts on the contact surface, the light beam is scattered and a portion of the light beam is transmitted to the image sensor via the first condenser. When the object is removed from the contact surface, the light beam is reflected to the light emitting surface by the contact surface.
    Type: Application
    Filed: February 21, 2012
    Publication date: June 21, 2012
    Inventors: Hui-Hsuan CHEN, Hung-Ching Lai, Tien-Chia Liu
  • Patent number: 8144124
    Abstract: An optical scrolling module includes a prism, a light source, an image sensor and a first condenser. The prism is disposed at an opening of an upper shell of a mouse and has a light incident surface, a reflective surface, a contact surface and a light emitting surface. The contact and light incident surfaces are respectively connected between the reflective and light emitting surfaces. The contact surface is exposed by the opening. A light beam from the light source is transmitted to the contact surface via the light incident and reflective surfaces. When an object with a pattern structure puts on the contact surface, the light beam is scattered and a portion of the light beam is transmitted to the image sensor via the first condenser. When the object is removed from the contact surface, the light beam is reflected to the light emitting surface by the contact surface.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: March 27, 2012
    Assignee: Pixart Imaging Inc.
    Inventors: Hui-Hsuan Chen, Hung-Ching Lai, Tien-Chia Liu
  • Patent number: 7767955
    Abstract: An image detecting apparatus includes an illumination system and a sensing system. The illumination system is for providing a light beam to a working surface to generate a reflected light beam by the working surface. The sensing system includes a sensing unit and a condensing unit. The sensing unit is disposed on a transmission path of the reflected light beam reflected by the working surface for receiving the reflected light beam. The condensing unit is disposed between the sensing unit and the working surface, wherein an optical axis of the condensing unit is deviated from a main optical axis of the reflected light beam.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: August 3, 2010
    Assignee: PixArt Imaging Inc.
    Inventors: Tien-Chia Liu, Hung-Ching Lai, Hui-Hsuan Chen
  • Patent number: 7740382
    Abstract: A light source assembly provides an illumination beam and the light converging element is disposed on a transmission path of the illumination beam. A light converging element has a top end and a bottom end opposite to the top end. The light converging element is gradually reduced from the bottom end to the top end. The top end is opposite to the light source assembly and has a cavity. The illumination beam is incident into the light converging element from the cavity and exits the light converging element from the bottom end.
    Type: Grant
    Filed: November 5, 2007
    Date of Patent: June 22, 2010
    Assignee: Young Optics Inc.
    Inventors: Hui-Ping Chen, Tien-Chia Liu, Chih-Lu Hsu
  • Publication number: 20100060578
    Abstract: According to the claimed invention, an optical pointing device includes a cover having a transparent part, and a sensing component installed inside the cover. The sensing component includes a light emitting module for emitting light, and a light sensing module for sensing light transmitted from the transparent part. The optical pointing device further includes a light guiding component installed between the sensing component and the cover. The light guiding component includes a reflecting part for reflecting the light emitted from the light emitting module to the transparent part, and a condensing part integrated with the reflecting part monolithically for condensing light transmitted from the transparent part to the light sensing module. The light emitted from the light emitting module is reflected to the transparent part by the reflecting part and then reflected back to the transparent part and the condensing part by a shelter disposed above the cover.
    Type: Application
    Filed: May 17, 2009
    Publication date: March 11, 2010
    Inventors: Hui-Hsuan Chen, Tien-Chia Liu
  • Publication number: 20090251414
    Abstract: An optical scrolling module includes a prism, a light source, an image sensor and a first condenser. The prism is disposed at an opening of an upper shell of a mouse and has a light incident surface, a reflective surface, a contact surface and a light emitting surface. The contact and light incident surfaces are respectively connected between the reflective and light emitting surfaces. The contact surface is exposed by the opening. A light beam from the light source is transmitted to the contact surface via the light incident and reflective surfaces. When an object with a pattern structure puts on the contact surface, the light beam is scattered and a portion of the light beam is transmitted to the image sensor via the first condenser. When the object is removed from the contact surface, the light beam is reflected to the light emitting surface by the contact surface.
    Type: Application
    Filed: May 22, 2008
    Publication date: October 8, 2009
    Inventors: Hui-Hsuan CHEN, Hung-Ching Lai, Tien-Chia Liu
  • Publication number: 20090250642
    Abstract: An image detecting apparatus includes an illumination system and a sensing system. The illumination system is for providing a light beam to a working surface to generate a reflected light beam by the working surface. The sensing system includes a sensing unit and a condensing unit. The sensing unit is disposed on a transmission path of the reflected light beam reflected by the working surface for receiving the reflected light beam. The condensing unit is disposed between the sensing unit and the working surface, wherein an optical axis of the condensing unit is deviated from a main optical axis of the reflected light beam.
    Type: Application
    Filed: July 9, 2008
    Publication date: October 8, 2009
    Inventors: Tien-Chia Liu, Hung-Ching Lai, Hui-Hsuan Chen
  • Publication number: 20090251415
    Abstract: An optical pointing device includes an illumination system, an imaging system and at least one diffraction element. The illumination system includes a light source for providing a light beam to a reflective surface outside the optical pointing device. The imaging system includes an image sensor disposed on a transmission path of the light beam after being reflected by the reflective surface. The at least one diffraction element is disposed in the illumination system and/or the imaging system and disposed on the transmission path of the light beam to change the transmission path of the light beam. The present optical pointing device can achieve the advantage of small volume.
    Type: Application
    Filed: June 19, 2008
    Publication date: October 8, 2009
    Inventors: Tien-Chia LIU, Hung-Ching LAI, Hui-Hsuan CHEN
  • Publication number: 20090244008
    Abstract: In a lens module and an optical mouse using the lens module, the lens module includes a substrate, a light guide rod and a carrying base. The light guide rod is extended from the substrate along a predetermined direction and has a light incident surface. The carrying base is connected with the light incident surface and has a carrying surface for carrying a light source of the optical mouse. The substrate, the light guide rod and the carrying base are integrated into one piece. The lens module has lower cost.
    Type: Application
    Filed: August 12, 2008
    Publication date: October 1, 2009
    Inventors: Tien-Chia LIU, Hung-Ching Lai, Hui-Hsuan Chen
  • Publication number: 20090195504
    Abstract: An optical pointing device includes a light source, a light beam splitter, an image sensor and a lens. The light source provides an illumination light beam. The light beam splitter is disposed on a transmission path of the illumination light beam and configured for splitting the illumination light beam into a first light beam and a second light beam. The image sensor is for sensing the first and the second light beams. The lens is disposed before the image sensor. When the optical pointing device is put on a reflective surface, the first light beam is reflected to the lens by the reflective surface and then is focused on the image sensor. When the optical pointing device is put on a transparent body disposed on the reflective surface, the second light beam is reflected to the lens by the reflective surface and then is focused on the image sensor.
    Type: Application
    Filed: April 24, 2008
    Publication date: August 6, 2009
    Inventors: Hui-Hsuan Chen, Tien-Chia Liu, Hung-Ching Lai
  • Publication number: 20080239717
    Abstract: A light source module including a light source assembly and a light converging element is provided. The light source assembly provides an illumination beam and the light converging element is disposed on a transmission path of the illumination beam. The light converging element has a top end and a bottom end opposite to the top end. The light converging element is gradually reduced from the bottom end to the top end. The top end is opposite to the light source assembly and has a cavity. The illumination beam is incident into the light converging element from the cavity and exits the light converging element from the bottom end. The illumination beam is converged by the light converging element, so the diverging angle of the illumination beam provided by the light source module is relatively small.
    Type: Application
    Filed: November 5, 2007
    Publication date: October 2, 2008
    Applicant: YOUNG OPTICS INC.
    Inventors: Hui-Ping Chen, Tien-Chia Liu, Chih-Lu Hsu