Patents by Inventor Fenglei LIU

Fenglei 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: 20240369842
    Abstract: The present disclosure provides an optical system and a head mount device. The optical system comprises: a first lens, a correcting lens, a first extension, and a second extension, the first lens comprising a first surface and a second surface provided oppositely; the correcting lens provided on the docking end-face of the first lens and comprising a third surface which is docked with the first surface, and a fourth surface which is docked with the second surface; the first extension being integrally formed with the first lens or the correcting lens, extending to and covering a docking location between the first surface and the third surface, the second extension being integrally formed with the first lens or the correcting lens, extending to and covering a docking location between the second surface and the fourth surface.
    Type: Application
    Filed: November 29, 2021
    Publication date: November 7, 2024
    Applicant: GOERTEK OPTICAL TECHNOLOGY CO., LTD.
    Inventor: Fenglei Liu
  • Publication number: 20240337848
    Abstract: The present disclosure provides an optical system and a head mount display, the optical system comprises: a first lens with a first surface and a second surface provided oppositely, the first lens comprising a light input-coupling end-face connected with the first surface and the second surface; a polarizing reflector disposed at a side of the first lens away from the light input-coupling end-face; a beam splitter disposed on a side where the second surface of the first lens is located; a second lens disposed between the beam splitter and the first lens; and a phase retarder disposed on the beam splitter or on the second lens, comprising a body and an extension, the body being disposed corresponding to a middle region of the beam splitter, the extension extending from the body toward an outer edge of the beam splitter, and an outer edge of the extension being aligned with the outer edge of the beam splitter.
    Type: Application
    Filed: November 29, 2021
    Publication date: October 10, 2024
    Applicant: Goertek Optical Technology Co., Ltd.
    Inventors: Fenglei Liu, Chun Yang, Bogang Zhao, Shouyan Hu
  • Publication number: 20240201423
    Abstract: An optical element (100) and an optical module (200) are provided. The optical element (100) comprises a transparent substrate (110), an array microlens layer (120) and a Fresnel lens layer (130). The array microlens layer (120) and the Fresnel lens layer (130) are stacked on the transparent substrate (110), or the array microlens layer (120) and the Fresnel lens layer (130) are respectively located on two opposite sides of the transparent substrate (110), wherein the Fresnel lens layer (130) is used for adjusting an emergent angle of an incident light beam, and the array microlens layer (120) is used for homogenizing a light beam emitted by the Fresnel lens layer (130).
    Type: Application
    Filed: December 29, 2021
    Publication date: June 20, 2024
    Applicant: Zhejiang Crystal-Optech Co., Ltd.
    Inventors: Huan Tao, Weiming Wu, Fenglei Liu
  • Publication number: 20230393414
    Abstract: Provided is a medium-free projection system, comprising: a divergent beam emitted from a light source is collimated and homogenized by a light homogenizing rod and a first Fresnel lens and serves as incident light of a thin film crystal liquid crystal display screen, and a beam emitted from the thin film crystal liquid crystal display screen passes through a collimating optical element, and is converged by an imaging optical assembly into a target region to form an image, so that each point of the beam on an image plane fills an eye box. That is, the image suspended in air can be viewed by naked eyes in the range of the eye box, thereby realizing medium-free projection.
    Type: Application
    Filed: December 29, 2021
    Publication date: December 7, 2023
    Applicant: Zhejiang Crystal-Optech Co., Ltd.
    Inventors: Xiaolu Lin, Honghu Ma, Fenglei Liu
  • Publication number: 20230384585
    Abstract: An optical module and an optical system thereof for head-up display, and a vehicle, relating to the technical field of head-up display. The optical module includes an image generation element and a light blocking assembly which are provided in sequence; the image generation element is used for forming an image signal, the image signal being incident on a receiving end through the light blocking assembly; and the light blocking assembly is further used for transmitting part of light in external light according to a polarization direction and/or wavelength. The image signal is not affected by the light blocking assembly when passing through the light blocking assembly; the external light passes through the light blocking assembly and the image generation element in sequence, and does not generate an image after passing through the image generation element; light heat of the external light would be gathered on the image generation element.
    Type: Application
    Filed: December 29, 2021
    Publication date: November 30, 2023
    Applicant: Zhejiang Crystal-Optech Co., Ltd.
    Inventors: Honghu Ma, Licao Li, Beibei HU, Qiyu Wang, Fenglei Liu
  • Publication number: 20230244014
    Abstract: An optical element (100) and an optical module (200), relating to the technical field of optics. The optical element comprises a diffractive optical element (110), and a Fresnel lens (120) connected to the diffractive optical element (110), such that a light beam that passes through the Fresnel lens (120) and is then transmitted through the diffractive optical element (110) forms a preset pattern. The assembly cost and the assembly difficulty can be reduced, and miniaturization of the optical module (200) can be facilitated.
    Type: Application
    Filed: December 13, 2021
    Publication date: August 3, 2023
    Applicant: Zhejiang Crystal-Optech Co., Ltd.
    Inventors: Zhaokun Wang, Weiming Wu, Fenglei Liu
  • Publication number: 20230178347
    Abstract: The present application provides a preparation method of a hydrogenated composite film and an optical filter, and relates to the field of optical film filter technologies. The preparation method includes: introducing inert gas and hydrogen into a reaction chamber, and bombarding at least two materials in the reaction chamber and the introduced hydrogen using plasma formed by the inert gas, such that the at least two materials are sputtered onto a substrate and react with hydrogen ions generated by the hydrogen to form a hydrogenated composite film layer. The hydrogenated composite film layer includes at least two materials which are co-sputtered onto the same substrate using the sputtering technology to obtain a required material performance, so as to obtain the hydrogenated composite film layer with a refractive index greater than 3.5 and an extinction coefficient less than 0.005 under a wavelength of 700 nm to 1800 nm.
    Type: Application
    Filed: July 8, 2021
    Publication date: June 8, 2023
    Applicant: ZHEJIANG CRYSTAL-OPTECH CO., LTD.
    Inventors: Yanzhi WANG, Yonghui WU, Ren LU, Ruizhi ZHANG, Jun YAO, Jinlong CHEN, Lijian JIN, Fenglei LIU, Jian TANG