Patent ID: 9033507
Filing Date: 2015-05-19
Classification: A61B

Abstract:
1. An apparatus for imaging an eye, comprising: an illumination unit; a beam splitter; an objective; a relay lens system; a fixation target unit; and a camera unit, the illumination unit comprising an optical radiation source, the illumination unit being configured to direct optical radiation of the source from an exit pupil of the illumination unit to the beam splitter, the beam splitter being configured to direct the optical radiation to the objective for illuminating the retina of an eye, the fixation target unit being configured to illuminate the retina of the eye with at least one fixation target image with visible optical radiation; the objective being configured to form a real intermediate image of the retina between the objective and the camera unit with the optical radiation reflected from the retina, wherein a real image of the exit pupil of the illumination unit and a real image of an entrance pupil of the camera unit are formable in the position ranging from the cornea to the backside of the crystalline lens of an eye, the beam splitter residing between the objective and the aperture of the relay lens system and being configured to direct the optical radiation from the retina to the camera unit, the beam splitter being configured to deviate the path of the illumination radiation and the path of the imaging radiation in a predetermined manner for preventing an overlap of the images of the exit pupil and the entrance pupil at least in the crystalline lens, and the camera unit comprising a detecting component, the relay lens system being configured to form a real image of the intermediate image on the detecting component with the optical radiation reflected from the retina for the optical image to be shown.