Patents Assigned to Nishika Limited
  • Patent number: 5315329
    Abstract: A stereo eye fundus camera capable of simultaneously recording a stereo pair of images of the fundus of an eye of a patient onto color photographic film for processing into a 3-D color photograph includes a light source for illuminating the patient's eye fundus and stereo optics for projecting a stereo pair of images of the eye fundus onto the film.
    Type: Grant
    Filed: April 8, 1992
    Date of Patent: May 24, 1994
    Assignee: Nishika Limited
    Inventor: John B. McAdams
  • Patent number: 5120122
    Abstract: This invention relates to an improved simultaneous stereo retinal camera capable of generating repetitive images from different cameras and at different times for diagnostic purposes. A Helium Neon laser light source located integrally with the optics of the camera generates a fixation indicia for the left and right eye of the patient and a scaler indicia located in the field of view of the camera and printed on each stereo photograph. The patient fixates on either the left or right indicia which places the optic nerve in the field of view of the camera. The scaler indicia appearing on the photo provides the basis for generating a standardized 3-D photo regardless of the camera used.
    Type: Grant
    Filed: March 8, 1990
    Date of Patent: June 9, 1992
    Assignee: Nishika Limited
    Inventor: John B. McAdams