초록 ▼

In the spectroreflectometry oxygenation measuring method and device, a light source produces a light beam having a spectral bandwidth including the wavelengths from 450 nm to 850 nm. A first optical system propagates the light beam from the light source to the fundus of a patient's eye, the light be

In the spectroreflectometry oxygenation measuring method and device, a light source produces a light beam having a spectral bandwidth including the wavelengths from 450 nm to 850 nm. A first optical system propagates the light beam from the light source to the fundus of a patient's eye, the light beam being reflected at least in part by the fundus of the patient's eye to produce a reflected light beam. A detector unit detects the spectral content of the reflected light beam and produces a signal indicative of this spectral content. A second optical system propagates an axial central portion of the reflected light beam along a predetermined propagation path from the fundus of the patient's eye to the detector unit. To that effect, the second optical system comprises a mirror defining an angle of 45.degree. with the predetermined propagation path and comprising (a) an axial opening for transmitting to the detector unit only the axial central portion of the reflected light beam, and (b) a light-reflecting surface surrounding the axial opening for deviating the axial peripheral portion of the reflected light beam toward the display system. The detector unit comprises a spectrograph responsive to the axial central portion of the reflected light beam to produce a light spectrum, and an array of detectors for measuring intensities of the light components of different wavelengths of the light spectrum. The light beam from the light source has an intensity substantially equal to daylight.

대표청구항 ▼

[ What is claimed is:] [11.] A spectroreflectometry oxygenation measuring method comprising the steps of:producing a light beam having a predetermined spectral bandwidth by means of a light source;propagating the light beam toward a region of the fundus of a patient's eye;reflecting at least in part

[ What is claimed is:] [11.] A spectroreflectometry oxygenation measuring method comprising the steps of:producing a light beam having a predetermined spectral bandwidth by means of a light source;propagating the light beam toward a region of the fundus of a patient's eye;reflecting at least in part the light beam on the fundus of the patient's eye to produce a reflected light beam having a geometrical longitudinal axis;by means of a detector unit, detecting the spectral content of the reflected light beam and producing a signal indicative of the spectral content of said reflected light beam; andpropagating the reflected light beam along a predetermined propagation path from the fundus of the patient's eye to the detector unit, wherein said step of propagating the reflected light beam comprises transmitting to the detector unit only an axial central portion of the reflected light beam corresponding to a small precise area of the fundus of the patient's eye where a spectroreflectometry oxygenation measurement is desired.