Patent ID: 6588900
Filing Date: 2003-07-08
Classification: A61B,G01J,G02B

Abstract:
A device for observing a body, especially an eye, comprising means (12) for illuminating the body (5), means (400, 450, 500, 700) for sampling the light coming from an illuminated region (01) of the body (5) and compensation means (20) capable of measuring a wavefront distortion of a beam coming from a point on the body (5) and in applying, to the light sampled by the sampling means (400, 450, 500, 700), a correction calculated from this measured distortion, characterized in that the sampling means and the compensation means are arranged so that, for each point on the body used for a correction calculation, the sampling means sample the light over a chosen region of the body sufficiently close to said point of calculation for the wavefront distortion of the light coming from any point in this region is the same as that coming from the point of calculation to within a fraction of a wavelength, and in that the device includes means (400, 450, 500, 700) for automatically changing the point on the body (5) used for the correction calculation and for changing, synchronously, the associated sampling region in such a way that the device scans the observed body in the form of a series of such successive regions for each of which the distortion of the wavefront emanating from any point in the region is identical, to within a fraction of a wavelength, to the distortion of a wavefront emanating from an associated point of calculation.