Patent ID: 6081372
Filing Date: 2000-06-27
Classification: G02B

Abstract:
Apparatus comprising a video recorder and a stereoscopic microscope having an objective section, eyepieces, two different pairs of lenses, and convergent optics for diagnosing certain pathologies and for video recording, said two different pairs of lenses being alternatively positionable proximate to the eyepieces and to the video recorder for transmission of information including rays alternatively to the eyepieces and to the video recorder, said microscope having a central axis extending from a position between the eye-pieces and a patient's eye to be viewed by an operator comprising:a first pair of lenses (1) having a first magnification and a second pair of lenses (2) having a second magnification different from said first magnification;means for supporting said first and said second pair of lenses in a rotatable disk-shaped drum (3), said central axis being substantially perpendicular to said drum;means including a draw lever to rotate said drum through an angle of 90.degree. to place each of said first and said second pair of lenses in such a position to be used by an operator for a direct observation of an image of a patient's eye and for an operating function of the video recorder for transmission of the information including the rays thereto;means for directing rays from the patient's eye towards said video recorder for video recording by said video recorder comprising a first substantially right-angle prism (6) and a second substantially right-angle prism (8), a pair of lenses (7) having a central axis orthogonally related to one axis of said right angle prisms and aligned with another axis of said right angle prisms;said first right-angle prism (6) deviating the rays onto said pair of lenses (7) and said second right-angle prism (8) deviating the rays from said pair of lenses (7) towards said video recorder (5);a pair of reflecting prisms and ocular groups (10) aligned on an observation axis in observation areas (A and B), respectively, said observation axis in each observation area (A and B) being angularly displaced from said central axis;said ocular groups (10) being located on an observation position from which the operator sees an image reproduced by said first pair of lenses (1) in the presence of said first magnification or an image produced by the second pair of lenses (2) in presence of said second magnification and said reflecting prisms (9) reflecting images in both cases; andsaid video recorder (5) cooperating with one of said first or second pair of lenses (1) or (2) which is not used for the direct observation of the image is utilized for the transmission of information including images on an axis (D) of said video camera (5), capable of transmission to a monitor whereby to avoid an interference condition, the direct observation of the image being made possible for the operator with the complete utilization of available brightness.