Patents Assigned to Eyedentify, Inc.
  • Optical alignment system
    Patent number: 4923297
    Abstract: A quasi-reticle for an optical device, generated by enhanced multiple reflections. The reticle comprises fixation target generative means operative to generate a line of ghost images or other multiple fixation targets spaced along the optical axis of the optical device, whereby to enable the viewer by aligning his line of sight with the line of multiple fixation targets to position his eye properly with respect to the optical axis of the optical device.
    Type: Grant
    Filed: June 23, 1986
    Date of Patent: May 8, 1990
    Assignee: Eyedentify, Inc.
    Inventor: Joseph H. Arndt
  • Method and apparatus for measuring blood oxygen levels in selected areas of the eye fundus
    Patent number: 4877322
    Abstract: This invention provides for the measurement of relative oxygen saturation of the choriodal blood of the fundus of the eye of a subject by directing into the eye a source beam of light including incandescent, red and infrared light, the combined beam penetrating the choroid and impinging on the sclera of the eye, the beam then being reflected back out of the eye as a collimated beam of light. The collimated beam of light is directed to a dichroic beam splitter where the red and infrared light are separated from the beam and are subject to the measurement of their respective intensities. The measured intensities of the red and infrared light components of the collimated beam reflected from the eye are compared with the measured intensities of the red and infrared light components of the separated portion of the source beam of light to determine the ratio of oxyhemoglobin to reduced hemoglobin.
    Type: Grant
    Filed: August 22, 1988
    Date of Patent: October 31, 1989
    Assignee: Eyedentify, Inc.
    Inventor: Robert V. Hill
  • Optical instrument line of sight aligning device
    Patent number: 4786142
    Abstract: A line of sight aligning device for use with an optical instrument having a viewing opening requiring precise alignment with the line of a sight of the viewer. The device comprises a body member having an eye opening and nose recess in operative position relative to each other. Positioning means position the body member relative to the optical instrument with its eye opening aligned with the viewing opening of the optical instrument. On the front face of the body member, above the nose recess, is a straight edge positioned within the field of vision of the viewer and disposed substantially at right angles to the longitudinal axis of the nose recess in the body member.
    Type: Grant
    Filed: June 16, 1986
    Date of Patent: November 22, 1988
    Assignee: Eyedentify, Inc.
    Inventor: Marion R. Karecki
  • Hand-held scanner for personnel identification through retinal blood vessel patterns
    Patent number: D302153
    Type: Grant
    Filed: July 7, 1986
    Date of Patent: July 11, 1989
    Assignee: Eyedentify, Inc.
    Inventor: Marion R. Karecki