SS OCT INTERFEROMETRY FOR MEASURING A SAMPLE
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Abstract
An SS OCT interferometry device for measuring a sample, in particular from an eye. The device interferometrically generates a measuring signal and from the signal a depth-resolved contrast signal of the sample by spectral tuning of the central wavelength of the measurement radiation of a measuring signal, and has a control unit for this purpose. The device includes a sample motion detector, which provides a motion signal indicating movement of or in the sample, the control unit uses the motion signal to correct the measuring signal with respect to measuring errors that are caused by a movement of or in the sample before or during the generation of the depth-resolved contrast signal.
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Citations
51 Claims
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1-23. -23. (canceled)
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24. An SS-OCT interferometer apparatus for measuring a sample or an eye, the apparatus comprising:
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a measurement radiation source emitting measurement radiation that is adapted to interferometrically generate a measurement signal and to generate a depth-resolved contrast signal of the sample from the measurement signal by spectral tuning of a central wavelength of the measurement radiation; a control device; a sample-motion detector that provides a motion signal to the control device, the motion signal indicating movement of the sample or movement within the sample; wherein before or during the generation of the depth-resolved contrast signal, the control device corrects the measurement signal with relation to measurement errors that are caused by movements of the sample or movements within the sample that occurred during the tuning of the central wavelength by utilizing the motion signal. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. An SS-OCT method for measuring a sample, or an eye, comprising:
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spectrally tuning a central wavelength of a measurement radiation; generating a measurement signal utilizing interference; generating a depth-resolved contrast signal of the sample from the measurement signal, detecting movements of the sample or in the sample and generating a motion signal indicating these movements; correcting the measurement signal in respect of measurement errors which are caused by movements of the sample occurring during the tuning of the control wavelength, wherein the measurement signal is corrected by use of the motion signal and before or during the generation of the depth-resolved contrast signal. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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Specification