Patents Assigned to Coretronic Corporation
  • Publication number: 20240085613
    Abstract: A backlight module includes a light guide plate, a light source, a first prism sheet, and a second prism sheet. The light source is disposed on a light incident surface of the light guide plate. The first prism sheet is disposed on a side of a light exiting surface of the light guide plate and has multiple first prism structures facing the light guide plate. The second prism sheet has multiple second prism structures facing the light guide plate. An included angle between an extending direction of the first prism structures and an extending direction of the second prism structures is greater than or equal to 85 degrees and less than or equal to 95 degrees. An included angle between the extending direction of the second prism structures and the light incident surface is greater than or equal to 85 degrees and less than or equal to 95 degrees.
    Type: Application
    Filed: July 26, 2023
    Publication date: March 14, 2024
    Applicants: Coretronic Optics (Suzhou) Co., Ltd., Coretronic Corporation
    Inventors: Chun-Hsiang Hsu, Yen-Hao Lin, Wen-Pin Yang
  • Publication number: 20240085614
    Abstract: An anti-peep light source module includes a light source module and a viewing angle switching module. The light source module has a light source and a light guide plate (LGP) and has light emitting elements arranged along a first direction. The viewing angle switching module is located on a transmission path of an illumination beam of the light source module and includes a viewing angle limiting element and a viewing angle adjusting element configured to change a viewing angle of the illumination beam. The viewing angle limiting element has a grating structure and is located between the viewing angle adjusting element and the light source module. an included angle between an extension direction of the grating structure and the first direction is within a range from 88 degrees to 92 degrees. The anti-peep light source module and A display device achieve favorable optical performance, user experience, and production yield.
    Type: Application
    Filed: September 8, 2023
    Publication date: March 14, 2024
    Applicant: Coretronic Corporation
    Inventors: Yi-Cheng Lin, Chih-Hsuan Kuo, Sung-Chun Hsu, Ming-Hsiung Fan, Tzeng-Ke Shiau
  • Publication number: 20240080417
    Abstract: A projection device including a light source module, an optical engine module and a projection lens is provided. The optical engine module includes a casing, a heat-conducting base, a heat pipe, a light valve and a thermal conductive layer. The casing has an opening. The heat-conducting base has an assembly opening, wherein the heat-conducting base is disposed on the casing, and the assembly opening is aligned with the opening of the casing. The heat pipe is connected to the heat-conducting base and disposed on the heat-conducting base. The light valve is disposed on the heat-conducting base corresponding to the assembly opening. The light valve is thermally coupled to the heat-conducting base through the thermal conductive layer. The light valve has a first stepped surface and a second stepped surface, and the thermal conductive layer covers at least a part of the first stepped surface and the second stepped surface.
    Type: Application
    Filed: September 5, 2023
    Publication date: March 7, 2024
    Applicant: Coretronic Corporation
    Inventors: Cheng-Han Lu, Chih-Sheng Wu
  • Publication number: 20240080418
    Abstract: An illumination system including a light-emitting element, a wavelength conversion element, at least a first light homogenizing element and a second light homogenizing element is provided. The wavelength conversion element is configured to convert the excitation light beam into a conversion light beam, and through the wavelength conversion element, the excitation light beam and the conversion light beam sequentially form an illumination light beam. The at least one first light homogenizing element is configured to adjust a shape of a light spot formed by the excitation light beam on the wavelength conversion element. The second light homogenizing element is disposed on a transmission path of the illumination light beam from the wavelength conversion element, wherein a shape of a light incident surface of the at least one first light homogenizing element is the same as a shape of a light incident surface of the second light homogenizing element.
    Type: Application
    Filed: September 4, 2023
    Publication date: March 7, 2024
    Applicant: Coretronic Corporation
    Inventor: Min-Chang Chang
  • Publication number: 20240077793
    Abstract: A reflective diffusion device including a reflecting member and a diffusing member is provided, which are adapted for reflecting and diffusing an excitation light beam emitted from a light source module. The reflecting member has a central axis and includes a reflective surface facing the light source module. The diffusing member is disposed on a portion of the reflective surface of the reflecting member. The excitation light beam is incident on a first position of the reflective diffusion device in an incident direction parallel to the central axis, is reflected by the reflective surface and transmitted to a second position of the reflective diffusion device, and is then reflected by the reflective surface to maintain the excitation light beam or form a diffused light beam. The excitation light beam or the diffused light beam exits from the reflective diffusion device in an exit direction parallel to the central axis.
    Type: Application
    Filed: July 25, 2023
    Publication date: March 7, 2024
    Applicant: Coretronic Corporation
    Inventor: Pi-Tsung Hsu
  • Publication number: 20240077795
    Abstract: A reflective diffusion device includes a driving element having a rotation shaft, a reflective element including a central axis and disposed on the driving element, and a diffusion element. The central axis and the rotation shaft are collinear. The diffusion element is disposed on at least one portion of the reflective element, and the driving element drives the reflective element and the diffusion element to rotate along the central axis. A laser beam enters the diffusion element along an incident direction, is transmitted to the reflective element and reflected by the reflective element, and exits from the diffusion element along an exit direction to generate a diffusion beam. An incident angle between the incident direction and the central axis is greater than 0 degree, and an emergent angle between the exit direction and the central axis is greater than or equal to 0 degree.
    Type: Application
    Filed: August 15, 2023
    Publication date: March 7, 2024
    Applicant: Coretronic Corporation
    Inventor: Pi-Tsung Hsu
  • Patent number: 11921411
    Abstract: A wavelength conversion element includes a substrate, a wavelength conversion layer and a heat dissipation member. The substrate has a supporting surface. The wavelength conversion layer is disposed on the supporting surface. The heat dissipation member is disposed on the supporting surface and is surrounded by the wavelength conversion layer. The heat dissipation member has a heat dissipation plate and a plurality of heat dissipation tooth portions. The heat dissipation plate is fixed on the supporting surface. The heat dissipation plate has an outer side surface. The outer side surface is perpendicular to the supporting surface. The heat dissipation tooth portions are respectively connected to the outer side surface. A projection device including the wavelength conversion element is also provided. The wavelength conversion element can improve wavelength conversion efficiency and reliability, and the projection device can improve image brightness and service life.
    Type: Grant
    Filed: April 1, 2022
    Date of Patent: March 5, 2024
    Assignee: Coretronic Corporation
    Inventors: I-Hua Chen, Chi-Tang Hsieh
  • Publication number: 20240069387
    Abstract: A display device includes a touch panel, an optical adhesive layer, and a front light module that includes a light source and a light guide plate (LGP) including multiple microstructures recessed into the LGP from a first surface of the LGP to form voids. The optical adhesive layer is adhered between the touch panel and a first surface of the LGP. A surface of the optical adhesive layer facing the LGP is in contact with the first surface of the LGP in multiple first regions, and a surface of the optical adhesive layer facing the LGP and the plurality of microstructures being overlapped in multiple second regions. A maximum vertical distance between each void and the first surface is a first depth. A vertical distance between the first regions and the second regions is 0 to 0.7 times the first depth.
    Type: Application
    Filed: July 12, 2023
    Publication date: February 29, 2024
    Applicant: Coretronic Corporation
    Inventors: Tzeng-Ke Shiau, Yu-Feng Lin, Ying-Shun Syu, Che-Jui Hsu
  • Publication number: 20240073378
    Abstract: A projection apparatus including a light source module, an eccentric-collimating lens, a prism lens group, a light valve and a projection lens is provided. The light source module is configured to provide an illumination light beam. The eccentric-collimating lens is disposed between the light sources and the light valve on a transmission path of the illumination light beam. The light valve is configured to convert the illumination light beam into an image light beam. The projection lens is configured to project the image light beam out of the projection apparatus. A first included angle between a first transmission direction of the illumination light beam incident on the eccentric-collimating lens and a central axis of the eccentric-collimating lens is greater than 0. The first transmission direction and a second transmission direction of the image beam exiting from the light valve are perpendicular to each other.
    Type: Application
    Filed: August 24, 2023
    Publication date: February 29, 2024
    Applicant: Coretronic Corporation
    Inventors: Chun-Hsin Lu, Jen-Wei Kuo, Wen-Chieh Chung
  • Publication number: 20240069425
    Abstract: An illumination system including two light source modules, two light guiding modules, a first reflector, and a light homogenization element is provided. The two light guiding modules are respectively disposed on transmission paths of light beams generated by the two light source modules to generate two guiding light beams. One of the guiding light beams is reflected to the light homogenization element by the first reflector. The other of the guiding light beams is directly transmitted to the light homogenization element. The guiding light beams are emitted from the light homogenization element and form an illumination light beam. A projection apparatus is also provided.
    Type: Application
    Filed: August 24, 2023
    Publication date: February 29, 2024
    Applicant: Coretronic Corporation
    Inventors: Chun-Hsin Lu, Jen-Wei Kuo, Wen-Chieh Chung
  • Patent number: 11914273
    Abstract: An optical engine module configured to receive an illuminating beam is provided. The illuminating beam includes a first illuminating beam with a first linear polarization state. The optical engine module includes a first polarization beam splitting element, a first phase retardation element, and a first light valve. The first polarization beam splitting element is disposed on the transmission path of the illuminating beam and is configured to reflect the first illuminating beam to the first phase retardation element. The first phase retardation element is disposed on the transmission path of the first illuminating beam, and the first illuminating beam passes through the first phase retardation element and is transmitted to the first light valve. The first light valve is disposed on the transmission path of the first illuminating beam and is configured to convert the first illuminating beam into a first image beam.
    Type: Grant
    Filed: April 27, 2022
    Date of Patent: February 27, 2024
    Assignee: Coretronic Corporation
    Inventor: Ku-Hui Hsu
  • Patent number: 11914277
    Abstract: An illumination system for providing an illumination beam includes red, blue, and green light source modules, a first light combining element, and a light uniforming element. The red light source module includes a first red light emitting element emitting first red light and a second red light emitting element emitting second red light. A peak wavelength of the second red light is greater than a peak wavelength of the first red light. The blue light source module includes a first blue light emitting element emitting first blue light and a second blue light emitting element emitting second blue light. A peak wavelength of the second blue light is less than a peak wavelength of the first blue light. The green light source module generates green light. The first light combining element guides these lights into the light uniforming element, so that the illumination system outputs the illumination beam.
    Type: Grant
    Filed: January 18, 2022
    Date of Patent: February 27, 2024
    Assignee: Coretronic Corporation
    Inventors: Hung-Yu Lin, Chi-Fu Liu, Chun-Hsin Lu, Chun-Li Chen
  • Patent number: 11914164
    Abstract: An optical engine module and a projection device are provided. The optical engine module includes a light source unit, a first diffusion element, a polarizing beam splitting element, a second diffusion element, and a light valve. The light source unit emits a light beam. The first diffusion element is disposed on a transmission path of the light beam. The polarizing beam splitting element is disposed on the transmission path of the light beam. The first diffusion element is disposed between the polarizing beam splitting element and the light source unit. The second diffusion element has at least one optical surface to reflect and diffuse the light beam. The light beam forms an illumination beam after passing through the second diffusion element, and the illumination beam has an optical image matching angle. The light valve is disposed on a transmission path of the illumination beam. The light valve converts the illumination beam to an image beam.
    Type: Grant
    Filed: March 11, 2022
    Date of Patent: February 27, 2024
    Assignee: Coretronic Corporation
    Inventor: Yi-Chien Lo
  • Patent number: 11914276
    Abstract: An optical engine module and a projection device are provided. The optical engine module includes a first prism, a light valve, a second prism, and a light-shielding element. The first prism is disposed on a transmission path of an illumination light beam. The light valve is disposed on the transmission path of the illumination light beam from the first prism. The light valve has a reflection surface suitable for converting the illumination light beam into an image beam. The second prism is located between the first prism and the light valve, and is disposed on the transmission path of the illumination light beam from the first prism and on a transmission path of the image beam from the light valve. The light-shielding element is located between the first prism and the second prism.
    Type: Grant
    Filed: April 18, 2022
    Date of Patent: February 27, 2024
    Assignee: Coretronic Corporation
    Inventor: Chung-Ting Wei
  • Patent number: 11914142
    Abstract: A method for generating virtual reality images and used in a light field near-eye display includes steps of: shifting a display image according to at least one change vector of a plurality of eye movement parameters, and calculating a compensation mask according to a simulated image and superimposing the compensation mask on a target image to generate a superimposed target image, wherein brightness distributions of the simulated image and the compensation mask are opposite to each other. The light field near-eye display is also provided. In this way, the light field near-eye display for generating virtual reality images and the method thereof can achieve the purpose of improving the uniformity of the image and expanding the eye box size.
    Type: Grant
    Filed: November 4, 2022
    Date of Patent: February 27, 2024
    Assignee: Coretronic Corporation
    Inventors: Chih-Hung Lu, Jui-Yi Wu
  • Patent number: 11914275
    Abstract: Provided is a projection device, including a casing, a light source module, an optical engine module, a projection lens, and a fan. The casing includes a right cover plate and a baffle opposite to each other, and a lower cover plate adjacent to the right cover plate. The baffle divides the casing into first and second areas. The right and lower cover plates respectively have first and second air outlets adjacent to each other and located in the second area. The light source module, the optical engine module, located on a light transmission path of the light source module, the projection lens, connected to the optical engine module, and the fan, adjacent to the baffle, are disposed in the first area of the casing. The projection device is placed in a first or second state, and hot airflow therein flows out from the first or second air outlet.
    Type: Grant
    Filed: July 20, 2021
    Date of Patent: February 27, 2024
    Assignee: Coretronic Corporation
    Inventors: Jui-Cheng Tseng, Wen-Hao Chu
  • Patent number: 11915379
    Abstract: The disclosure provides a display image adjustment method and an augmented reality display device. The display image adjustment method includes the following steps. Received image data is converted to a coordinate system of the augmented reality display device to obtain initial coordinate information. An initial image is provided to an active display region of the augmented reality display device based on the initial coordinate information. The initial coordinate information is adjusted in a virtual adjustment coordinate region to obtain adjusted coordinate information when an adjustment command is received. An adjusted image is provided to the active display region of the augmented reality display device based on the adjusted coordinate information. The display image adjustment method and the augmented reality display device proposed by the disclosure may adjust display content of the AR display device according to user's needs.
    Type: Grant
    Filed: April 14, 2022
    Date of Patent: February 27, 2024
    Assignee: Coretronic Corporation
    Inventors: Shih-Min Wu, Yi-Fa Wang, Ping-Chen Ma
  • Patent number: 11914274
    Abstract: The disclosure provides a projection lens module and a projector having the projection lens module, which may effectively suppress the shaking of the projection lens. The projection lens module includes two casings, a projection lens and a carrier structure. The projection lens is disposed between the two casings. The carrier structure includes a bracket, at least one screwing member, and two buffer members. The bracket has at least one aperture, and the screwing member passes through the aperture to lock the bracket to the projection lens. A diameter of the aperture in a first direction is greater than a diameter of the aperture in a second direction perpendicular to the first direction. The two buffer members are respectively disposed on opposite ends of the bracket and lean against the two casings in the first direction, respectively.
    Type: Grant
    Filed: June 6, 2022
    Date of Patent: February 27, 2024
    Assignee: Coretronic Corporation
    Inventor: Kun-Chen Hsu
  • Patent number: 11917340
    Abstract: A projection device, including an illumination system, a control element, a driving element, a light valve, and a projection lens, is provided. The illumination system includes multiple light sources for providing multiple light beams to be combined into an illumination light beam. The driving element respectively drives the light sources in a first mode or a second mode, so that the light beams have respective luminous brightness, and the driving element is switched from the first mode to the second mode according to a first signal. The control element provides the first signal to the driving element according to an optical state or a time state of the projection device. The light valve is adapted to convert the illumination light beam into an image light beam. The projection lens is adapted to project the image light beam out of the projection device.
    Type: Grant
    Filed: March 24, 2022
    Date of Patent: February 27, 2024
    Assignee: Coretronic Corporation
    Inventors: Chi-Fu Liu, Tsung-Hsin Liao, Chun-Li Chen, Hung-Yu Lin
  • Patent number: 11899196
    Abstract: A light homogenizing element includes a light incident surface and at least one diffusion surface, including: a first substrate, a carrier layer, a piezoelectric film, a driving electrode, a light-transmitting layer, and multiple light diffusion microstructures. The first substrate includes a first surface and a second surface opposite to each other. The carrier layer is located on the first surface of the first substrate and includes a light passing region penetrating the carrier layer, and includes a protruding structure enclosing the light passing region. The light-transmitting layer is provided overlapping on the protruding structure, and the surface of the light-transmitting layer covering the light passing region is the light incident surface. The multiple light diffusion microstructures are provided on the at least one diffusion surface, and projections of the multiple light diffusion microstructures on the light-transmitting layer are located in the light passing region.
    Type: Grant
    Filed: March 22, 2022
    Date of Patent: February 13, 2024
    Assignee: Coretronic Corporation
    Inventors: Fu-Ming Chuang, Hung-Ta Chien