Patent ID: 6810140
Filing Date: 2004-10-26
Classification: A61B

Abstract:
A three dimensional real-time apparatus for imaging an ocular retina which comprises:a laser generating device for generating laser beams; an optical means for causing the incident angles, relative to a retina, of the laser beams irradiated on the retina at respective moments to agree with the output angles of imaginary lines of the same laser beams reflected from the retina in both the vertical and horizontal direction; and a three dimensional imaging means for converting images of the retina extracted from the optical means to real-time three dimensional images, wherein said optical means comprises: a polygon motor having plural mirror surfaces for vertically scanning the laser beams emitted from the laser generating device through rotating operation; a galvanometer for producing parallel rays by laterally scanning the laser beams from the polygon motor and for irradiating the parallel rays so produced to the galvanometer; and an array of sensors arranged in such a manner that laser single rays can be applied thereto at predetermined inclined angles, said laser single rays having passed the galvanometer and the polygon motor after their reflection on the retina, wherein said optical means further comprises a convex mirror surface for applying the laser single rays from the polygon motor, in a distributed manner, to the sensor array in such a manner that the output angles of rays reflected from the convex mirror surface have the same angles as the incident angles of the laser beams at the retina as the laser single rays from the polygon motor.