中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

6089 records (took 0.03 seconds)

    APPARATUS FOR MEASURING PUPILLARY DISTANCE
    61.
    发明专利
    APPARATUS FOR MEASURING PUPILLARY DISTANCE 失效

    公开(公告)号：JPH021214A

    公开(公告)日：1990-01-05

    申请号：JP2472689

    申请日：1989-02-02

    Applicant: ESSILOR INT

    Inventor： BERUNAARU KAZAN ,  AAMUDO HADAJI ,  JIYAN KUROODO ANKAN

    IPC: A61B3/11 ,  A61B3/113 ,  G02C13/00

    Abstract: PURPOSE: To measure an inter-pupil range by providing the subject device with a liquid crystal matrix device at a window part for graticule display on a front panel and providing this matrix device with a digital address generator and a controller for controlling the display of gradicules. CONSTITUTION: Window parts 15-18 are arranged on the front panel, and these window parts are composed of a liquid crystal matrix. A logic device 20 is selectively connected to the row and column input parts of matrix at the window parts 15 and 16 and the row input part of matrix at the window parts 17 and 18. A control keyboard 21 consists of a state change control address generator together with the logic device 20. The matrix column address signals of the window parts 15 and 16 are received so that a dark vertical line 16a can be watched. The address signals can be changed by using the keyboard 21 and this is performed until the line 16a passes through the reflecting part of a light source on the cornea. The respective address signals are corresponding to distances from the centers of pupils of relevant eyes to the symmetric vertical axis of the front panel and the total of both the distances become the inter-pupil range. The inter-pupil range and the distances from the symmetric vertical axis to the left and right pupils are displayed by the logic device 20.

    METHOD FOR MINIMIZING MAXIMUM THICKNESS OF LENS FOR MONOFOCAL SPECTACLES AND LENS FOR MONOFOCAL SPECTACLES WITH GRADIENT IN REFRACTIVE INDEX MANUFACTURED THEREBY
    62.
    发明专利
    METHOD FOR MINIMIZING MAXIMUM THICKNESS OF LENS FOR MONOFOCAL SPECTACLES AND LENS FOR MONOFOCAL SPECTACLES WITH GRADIENT IN REFRACTIVE INDEX MANUFACTURED THEREBY 失效

    公开(公告)号：JPH01316719A

    公开(公告)日：1989-12-21

    申请号：JP10570789

    申请日：1989-04-25

    Applicant: ESSILOR INT

    Inventor： EMANIYUERU BONBON ,  JIYAN RUI MERUSHIEERU

    IPC: G02B3/00 ,  G02C7/02

    Abstract: PURPOSE: To optionally minimize maximum thickness by defining a system for changing a refractive index by a rule that the absolute value of optical magnification of a lens is sharply larger than geometric magnification at the time of calculating the optical magnification by using a refractive index on the optical axis of the lens. CONSTITUTION: The maximum thickness of a single focus glasses lens having a partially spherical convex face 10 on one side and a concave face 11 and capable of changing its refractive index in the diameter direction from the optical axis X of the lens to its periphery is minimized. The system for changing the refractive index is defined by the rule that the absolute value of optical magnification of the lens is sharply larger than geometric magnification at the time of calculating the optical magnification by using the refractive index on the optical axis X of the lens. The absolute value of the optical magnification is at least 1.5 times the geometric magnification. Consequently, the single focus glass lens allowed to be easily worked and capable of sufficiently correcting astigmatism and field curvature aberration and suitably reducing the maximum thickness is manufactured.

    DEFORMABLE COMPOSITE STRUCTURE AND RIGID COMPOSITE STRUCTURE COMPOSED OF SAID COMPOSITE STRUCTURE
    63.
    发明专利
    DEFORMABLE COMPOSITE STRUCTURE AND RIGID COMPOSITE STRUCTURE COMPOSED OF SAID COMPOSITE STRUCTURE 失效

    公开(公告)号：JPH01310944A

    公开(公告)日：1989-12-15

    申请号：JP5598389

    申请日：1989-03-08

    Applicant: ESSILOR INT ,  BURIYUNEESHIKAPU ,  SEBE INTERNATL

    Inventor： ORIBUIEERU BUAN

    IPC: B29B11/16 ,  B29C43/02 ,  B29C70/06 ,  B29C70/08 ,  B29C70/46 ,  B29D12/02 ,  B29D99/00 ,  B29K105/10 ,  B29L31/52 ,  G02C5/00 ,  G02C5/16

    Abstract: PURPOSE: To obtain the excellent distribution characteristics of a synthetic material especially around a central insert by constituting one layer (engineering layer) among concentric layers of a fabric product constituted of yarn made of an engineering material and/or a classical material and constituting the other one layer (matrix) among them of a thermoplastic material to allow the same to be present in the peripheral part of an assembly. CONSTITUTION: A deformable composite structure 10 is elongated as a whole and contains a plurality of layers concentrically centering around the core 11 extending over the total length of the structure 10. These layers consist of at least one layer (engineering layer) 12A constituted of a fabric product constituted of yarn made of a material generally called an engineering material such as carbon, glass or aramide and/or a classical material such as a vegetable material, an artificial material, a synthetic material or a metal material and at least other one layer 12B, 12'B (matrix) made of a thermoplastic material. The matrix 12B is present at least in the periphery of an assembly.

Patent Agency Ranking