On-line and real-time spectroreflectometry measurement of oxygenation in a patient's eye
First Claim
1. A spectroreflectometry oxygenation measuring device, comprising:
- a light source for producing a light beam having a predetermined spectral bandwidth;
a first optical system for propagating the light beam from the light source to a two-dimensional area of 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 for detecting the spectral content of the reflected light beam and for producing a signal indicative of the spectral content of said reflected light beam; and
a second optical system for propagating the reflected light beam from the fundus of the patient'"'"'s eye to the detector unit, wherein said second optical system comprises;
an optical scanning sub-system for scanning a plurality of points of the two-dimensional area of the fundus of the patient'"'"'s eye, said optical scanning sub-system comprising;
optical elements for transmitting to the detector unit only a portion of the reflected light beam corresponding to the point of said two-dimensional area being scanned to thereby conduct at said point a spectroreflectometry oxygenation measurement.
1 Assignment
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Accused Products
Abstract
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 a two-dimensional area of 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 the spectral content of this reflected light beam. A second optical system propagates the reflected light beam from the fundus of the patient'"'"'s eye to the detector unit. This second optical system comprises an optical scanning sub-system for scanning a plurality of points of the two-dimensional area of the fundus of the patient'"'"'s eye. Finally, the optical scanning sub-system comprises optical elements for transmitting to the detector unit only a portion of the reflected light beam corresponding to the point of the two-dimensional area being scanned to thereby conduct at this point a spectroreflectometry oxygenation measurement.
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Citations
14 Claims
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1. A spectroreflectometry oxygenation measuring device, comprising:
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a light source for producing a light beam having a predetermined spectral bandwidth; a first optical system for propagating the light beam from the light source to a two-dimensional area of 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 for detecting the spectral content of the reflected light beam and for producing a signal indicative of the spectral content of said reflected light beam; and a second optical system for propagating the reflected light beam from the fundus of the patient'"'"'s eye to the detector unit, wherein said second optical system comprises; an optical scanning sub-system for scanning a plurality of points of the two-dimensional area of the fundus of the patient'"'"'s eye, said optical scanning sub-system comprising; optical elements for transmitting to the detector unit only a portion of the reflected light beam corresponding to the point of said two-dimensional area being scanned to thereby conduct at said point a spectroreflectometry oxygenation measurement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A spectroreflectometry oxygenation measuring method comprising the steps of:
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producing a light beam having a predetermined spectral bandwidth by means of a light source; propagating the light beam from the light source to a two-dimensional area 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; 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; and propagating the reflected light beam from the fundus of the patient'"'"'s eye to the detector unit, wherein said reflected light beam propagating step comprises the substep of; scanning a plurality of points of the two-dimensional area of the fundus of the patient'"'"'s eye, said scanning substep comprising the substep of; transmitting to the detector unit only a portion of the reflected light beam corresponding to the point of said two-dimensional area being scanned to thereby conduct at said point a spectroreflectometry oxygenation measurement. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification