中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

26 records (took 0.021 seconds)

    22.
    发明专利
    未知

    公开(公告)号：DE69737242D1

    公开(公告)日：2007-02-22

    申请号：DE69737242

    申请日：1997-11-21

    Applicant: ALCON INC

    Inventor： FREY W ,  BURKHALTER H ,  ZEPKIN NEIL ,  PAPPELIERS EDWARD ,  CAMPIN A

    IPC: A61F9/01 ,  G01M11/02 ,  A61B3/10 ,  A61B3/103 ,  A61F9/007 ,  A61F9/008 ,  G01J1/00

    Abstract: A system and method for objective measurement and correction of focusing optical systems comprising optics disposed in the path of the beam (18) which directs the beam through the focusing optical system, e.g., and eye (120) and focuses the beam at its rear portion (122). The beam is diffusely reflected back and a wavefront analyzer (26) is disposed in the path of the wavefront projected from the optics and calculates the distortions as an estimate of aberrations of the focusing optical system.

    ZOOM DEVICE FOR EYE TRACKER CONTROL SYSTEM AND ASSOCIATED METHODS
    25.
    发明专利
    ZOOM DEVICE FOR EYE TRACKER CONTROL SYSTEM AND ASSOCIATED METHODS 未知

    公开(公告)号：CA2426416A1

    公开(公告)日：2003-11-28

    申请号：CA2426416

    申请日：2003-04-23

    Applicant: ALCON INC

    Inventor： ZEPKIN NEIL ,  NGUYEN PHUOC KHANH

    IPC: A61B3/10 ,  A61B3/113 ,  A61F9/007 ,  A61F9/008 ,  A61F9/01 ,  G02B26/08 ,  G02B27/00 ,  G02B15/00

    Abstract: A zooming mechanism for use in an eye tracking system includes a pyramidal prism that has either a plurality of reflective facets or of transmissive facets meeting at an apex. An incident light beam directed onto each facet of the prism is reflected/refracted onto a planar surface substantially normal to the optical axis, to form a plurality of light spots arrayed about an optical axis. The prism is translatable along the optical axis between axial positions for altering a spacing of the light spots without substantially changing their size. Preferably the spots are directed onto a boundary defined by two adjoining surfaces of the eye having different coefficients of reflection. Reflected energy fro m each of the plurality of positions is detected, and a size of a pattern formed by the light spots is adjustable without substantially changing a diameter of the individual light spots.

    Apparatus and method for objective measurements of optical systems using wavefront analysis
    26.
    发明专利
    Apparatus and method for objective measurements of optical systems using wavefront analysis 未知

    公开(公告)号：AU2985501A

    公开(公告)日：2001-11-15

    申请号：AU2985501

    申请日：2001-03-23

    Applicant: ALCON INC

    Inventor： FREY RUDOLPH W ,  CAMPIN JOHN ALFRED ,  POPPELIERS EDWARD ,  ZEPKIN NEIL ,  BURKHALTER JAMES H

    IPC: A61B3/10 ,  A61B3/103 ,  A61B3/15 ,  G01J9/00 ,  A61B3/107

    Abstract: An apparatus for determining aberrations of an eye includes a patient head rest allowing for positioning adjustment. The patient head rest is operable with an optical table having a base. The base includes a probe beam generating apparatus, probe beam directing optics which itself comprises a beam splitter; a mirror; and a lens. The probe beam directing optics is capable of directing a probe beam toward an eye of a patient positioned on the patient head rest. Video image components are provided and comprise a light source, a mirror; and a video camera. The video image components are capable of generating an image of an eye of a patient positioned on the patient head rest. Eye fixation components generate a target that the eye of a patient positioned on the patient head rest can view. The eye fixation components comprise a fixation target, a light source, a lens, and a mirror. Wavefront directing and analyzing components measure a wavefront emanating from the eye of a patient positioned on the patient head rest and determine aberrations of the eye that range from at least about + or - 1 diopters to at least about + or - 6 diopters. The wavefront directing and analyzing components include a lens; a mirror, a microlens array, a camera, and a data processor.

Patent Agency Ranking