Patents Assigned to ZHEJIANG CRYSTAL-OPTECH.CO., LTD.
  • 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
  • Patent number: 11643716
    Abstract: A preparation method for a high-refractive index hydrogenated silicon film, a high-refractive index hydrogenated silicon film, a light filtering lamination and a light filtering piece. The method includes: (a) by magnetic controlled Si target sputtering, Si deposits on a base body, forming a silicon film, which (b) forms an oxygenic hydrogenated silicon film in environment of active hydrogen and active oxygen, the amount of active oxygen accounts for 4%-99% of the total amount of active hydrogen and active oxygen, or, a nitric hydrogenated silicon film in environment of active hydrogen and active nitrogen, the amount of active nitrogen accounts for 5%-20% of the total amount of active hydrogen and active nitrogen. Sputtering and reactions are separately conducted, Si first deposits on the base body by magnetic controlled Si target sputtering, and then plasmas of active hydrogen and active oxygen/nitrogen react with silicon for oxygenic or nitric SiH.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: May 9, 2023
    Assignee: ZHEJIANG CRYSTAL-OPTECH CO., LTD.
    Inventors: Ruizhi Zhang, Jian Tang, Ying Wang, Hui Yu, Zhangwu Lu, Zhengchi Xu, Qibin Zhang
  • Patent number: 10606049
    Abstract: The present invention relates to an ultra-short distance projection lens with a refractive meridional image surface and a refractive sagittal image surface being isolated, including a display chip, a refractive lens group, and a rotationally symmetric reflector. The display chip undergoes imaging by the refractive lens group to form, between the refractive lens group and the rotationally symmetric reflector, a meridional intermediate image and a sagittal intermediate image that are isolated, wherein the two images undergo imaging by the rotationally symmetric reflector and astigmatism is eliminated on a screen, to form a clear picture. The present invention has a simple structure, a projection ratio 0.27 to 0.31, a magnification ratio 170 times to 220 times, and ultra-small distortion, has an optical structure that cancels out astigmatism, high resolution, very desirable tolerance, and relatively low mounting precision requirements on optical parts, and has a very high yield in mass production.
    Type: Grant
    Filed: November 6, 2016
    Date of Patent: March 31, 2020
    Assignee: ZHEJIANG CRYSTAL-OPTECH.CO., LTD.
    Inventors: Zhenjie Liu, Wenzi Zhang, Jianjun Zhou
  • Publication number: 20190352222
    Abstract: A preparation method for a high-refractive index hydrogenated silicon film, a high-refractive index hydrogenated silicon film, a light filtering lamination and a light filtering piece. The method includes: (a) by magnetic controlled Si target sputtering, Si deposits on a base body, forming a silicon film, which (b) forms an oxygenic hydrogenated silicon film in environment of active hydrogen and active oxygen, the amount of active oxygen accounts for 4%-99% of the total amount of active hydrogen and active oxygen, or, a nitric hydrogenated silicon film in environment of active hydrogen and active nitrogen, the amount of active nitrogen accounts for 5%-20% of the total amount of active hydrogen and active nitrogen. Sputtering and reactions are separately conducted, Si first deposits on the base body by magnetic controlled Si target sputtering, and then plasmas of active hydrogen and active oxygen/nitrogen react with silicon for oxygenic or nitric SiH.
    Type: Application
    Filed: January 5, 2018
    Publication date: November 21, 2019
    Applicant: ZHEJIANG CRYSTAL-OPTECH CO., LTD.
    Inventors: Ruizhi ZHANG, Jian TANG, Ying WANG, Hui YU, Zhangwu LU, Zhengchi XU, Qibin ZHANG
  • Publication number: 20170131530
    Abstract: The present invention relates to an ultra-short distance projection lens with a refractive meridional image surface and a refractive sagittal image surface being isolated, including a display chip, a refractive lens group, and a rotationally symmetric reflector. The display chip undergoes imaging by the refractive lens group to form, between the refractive lens group and the rotationally symmetric reflector, a meridional intermediate image and a sagittal intermediate image that are isolated, wherein the two images undergo imaging by the rotationally symmetric reflector and astigmatism is eliminated on a screen, to form a clear picture. The present invention has a simple structure, a projection ratio 0.27 to 0.31, a magnification ratio 170 times to 220 times, and ultra-small distortion, has an optical structure that cancels out astigmatism, high resolution, very desirable tolerance, and relatively low mounting precision requirements on optical parts, and has a very high yield in mass production.
    Type: Application
    Filed: November 6, 2016
    Publication date: May 11, 2017
    Applicant: ZHEJIANG CRYSTAL-OPTECH.CO., LTD.
    Inventors: Zhenjie LIU, Wenzi ZHANG, Jianjun ZHOU