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2047 条记录 (耗时 0.044 秒)

    OPTICAL IMAGING LENS ASSEMBLY
    1.
    发明申请
    OPTICAL IMAGING LENS ASSEMBLY 审中-公开

    公开(公告)号：US20190243106A1

    公开(公告)日：2019-08-08

    申请号：US16274821

    申请日：2019-02-13

    申请人： Zhejiang Sunny Optical Co., Ltd

    发明人： Biao Xu ,  Kaiyuan Zhang ,  Jianke Wenren

    IPC分类号： G02B13/00 ,  G02B9/64 ,  G02B5/00

    CPC分类号： G02B13/0045 ,  G02B5/005 ,  G02B9/64

    摘要： An optical imaging lens assembly is provided. The optical imaging lens assembly includes, sequentially along an optical axis from an object side to an image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The first lens has a positive refractive power, an object-side surface of the first lens is a convex surface; each of the second lens, the third lens, the fourth lens, and the fifth lens has a positive refractive power or a negative refractive power; the sixth lens has a positive refractive power; the seventh lens has a negative refractive power; an image-side surface of the first lens, an image-side surface of the third lens, and an object-side surface and an image-side surface of the seventh lens are concave surfaces; and TTL and ImgH satisfy: TTL/ImgH≤1.4.

    PHOTOGRAPHING OPTICAL LENS SYSTEM, IMAGE CAPTURING UNIT AND ELECTRONIC DEVICE
    2.
    发明申请
    PHOTOGRAPHING OPTICAL LENS SYSTEM, IMAGE CAPTURING UNIT AND ELECTRONIC DEVICE 审中-公开

    公开(公告)号：US20190235212A1

    公开(公告)日：2019-08-01

    申请号：US16379740

    申请日：2019-04-09

    申请人： LARGAN PRECISION CO.,LTD.

    发明人： Wei-Yu CHEN

    IPC分类号： G02B13/00 ,  G02B3/04 ,  G02B27/00 ,  G02B9/64 ,  G02B5/00 ,  G02B5/20

    CPC分类号： G02B13/0045 ,  G02B3/04 ,  G02B5/005 ,  G02B5/208 ,  G02B9/64 ,  G02B27/0025

    摘要： A photographing optical lens system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element and an eighth lens element. The second lens element has positive refractive power. The eighth lens element has an image-side surface being concave in a paraxial region thereof, wherein the image-side surface of the eighth lens element has at least one convex shape in an off-axis region thereof, and both an object-side surface and the image-side surface thereof are aspheric. The photographing optical lens system has a total of eight lens elements. An air gap in a paraxial region is located between every two lens elements of the photographing optical lens system that are adjacent to each other.

    OPTICAL LENS ASSEMBLY, IMAGING LENS MODULE AND ELECTRONIC APPARATUS
    3.
    发明申请
    OPTICAL LENS ASSEMBLY, IMAGING LENS MODULE AND ELECTRONIC APPARATUS 审中-公开

    公开(公告)号：US20190227203A1

    公开(公告)日：2019-07-25

    申请号：US16369572

    申请日：2019-03-29

    申请人： LARGAN PRECISION CO., LTD.

    发明人： Chih-Wen HSU ,  Ming-Ta CHOU

    IPC分类号： G02B5/00 ,  G02B7/02

    CPC分类号： G02B5/005 ,  G02B7/021 ,  G02B7/022 ,  G02B7/026 ,  G02B13/001

    摘要： An optical lens assembly includes at least two lens elements and at least one light blocking sheet. Each of the lens elements includes a connecting structure for aligning the two lens elements. Each of the connecting structures includes a connecting surface and a circular conical surface, and a receiving space is formed between the two lens elements. A vertical distance between the receiving space and an optical axis is shorter than a vertical distance between each circular conical surface and the optical axis. The light blocking sheet is received in the receiving space and has a polygonal opening, and an outside diameter of the light blocking sheet is smaller than or equal to a minimum diameter of each circular conical surface.

    System and Method for Remote Sensing for a Target
    8.
    发明申请
    System and Method for Remote Sensing for a Target 审中-公开

    公开(公告)号：US20180275322A1

    公开(公告)日：2018-09-27

    申请号：US15926556

    申请日：2018-03-20

    申请人： U.S.A. AS REPRESENTED BY THE ADMINSTRATOR OF NASA

    发明人： David G. MacDonnell ,  Wenbo Sun ,  Yongxiang Hu

    IPC分类号： G02B5/18 ,  G01S17/89 ,  G01N21/21 ,  G01N21/55

    CPC分类号： G02B5/188 ,  G01N21/21 ,  G01N21/55 ,  G01N2021/1793 ,  G01S7/4816 ,  G01S17/89 ,  G02B5/005

    摘要： A remote sensing system includes a primary beam configured to carry orbital angular momentum and characterized by a mode number (m), with the mode number (m) being a non-zero integer. The primary beam is configured to be directed at a target. A photon sieve is configured to receive a secondary beam emanating from the target. The secondary beam at least partially includes a portion of the primary beam. The photon sieve includes a plurality of holes forming one or more respective spiral patterns. The quantity of the respective spiral patterns in the photon sieve corresponds to the mode number (m) of the primary beam. The plurality of holes may be configured to have a minimum diameter such that the minimum diameter is greater than a predefined wavelength of the primary beam. The respective spiral patterns extend between a respective first hole and a respective final hole.

    METHOD FOR MEASURING MODE FIELD DIAMETER OF SINGLE-MODE FIBRE USING OPTICAL INTEGRATION TECHNIQUE EMPLOYING GRADUALLY VARIABLE APERTURE
    9.
    发明申请
    METHOD FOR MEASURING MODE FIELD DIAMETER OF SINGLE-MODE FIBRE USING OPTICAL INTEGRATION TECHNIQUE EMPLOYING GRADUALLY VARIABLE APERTURE 审中-公开

    公开(公告)号：US20180274906A1

    公开(公告)日：2018-09-27

    申请号：US15996513

    申请日：2018-06-03

    申请人： Jin ZHOU ,  Wenjun ZHOU

    发明人： Jin ZHOU ,  Wenjun ZHOU

    IPC分类号： G01B11/08 ,  G01M11/00

    CPC分类号： G01M11/33 ,  G01J1/0437 ,  G01M11/00 ,  G02B5/005

    摘要： The present invention discloses a method for measuring a mode field diameter (MFD) of a single-mode fibre using an optical integration technique employing a gradually variable aperture. The method transforms, according to Petermann II definition, an integral operation in a formula of an MFD of a single-mode fibre into elementary arithmetic operations to be performed on a mean square value of the numerical aperture of the fibre. By using an optical integrator having a gradually variable aperture, the mean square value of the numerical aperture of the single-mode fibre can be precisely measured by one of the following three methods: translation, rotation and beam splitting, thus accordingly solving the MFD of the test fibre. The aforementioned measurement an MFD of a single-mode fibre is characterized by precision, high speed and convenience, and can be widely applied in various applications, such as measurement standards, automated test equipment, and engineering instruments.