Optical coherence tomography system and method with multiple apertures
AssigneeSantec Corporation
InventorChangho Chong
Life of this patent
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Abstract
An optical coherence tomography (OCT) system using partial mirrors is generally described. In an example, the OCT system includes a swept light source. The system further includes an interferometer into which light from the light source is directed and a detector configured to produce an imaging sample signal based on light received from the interferometer. The system also includes a partial mirror disposed over an aperture, wherein the partial mirror is configured to transmit light within a first wavelength range and reflect light within a second wavelength range.
Claims20
An optical coherence tomography (OCT) system comprising:
- a light source configured to emit a light beam;
- an interferometer configured to split the light beam into a reference beam and a sample beam;
- a mirror system configured to route the sample beam to at least one of a first aperture or a second aperture for imaging of a sample, wherein the mirror system further comprises a switching mirror configured to selectively direct at least a portion of the sample beam into the first aperture or direct at least a portion of the sample beam towards the second aperture;
- a first partial mirror positioned across at least a portion of the first aperture, wherein the partial mirror is configured to transmit light within a first wavelength range and reflect light within a second wavelength range;
- and
- a detector configured to detect a signal based on an interference between the reference beam and a portion of the sample beam reflected from the sample.
(canceled)
An optical coherence tomography (OCT) system comprising:
- a light source configured to emit a light beam;
- an interferometer configured to split the light beam into a reference beam and a sample beam;
- a mirror system configured to route the sample beam to a first aperture for imaging of a sample;
- a first partial mirror positioned across at least a portion of the first aperture, wherein the partial mirror is configured to transmit light within a first wavelength range and reflect light within a second wavelength range;
- a detector configured to detect a signal based on an interference between the reference beam and a portion of the sample beam reflected from the sample;
- a distance sensor configured to sense a distance of the sample from the first aperture;
- and
- an alarm configured to indicate when the distance is within a range suitable for conducting a measurement with the OCT system.
A method of using an optical coherence tomography (OCT) system comprising:
- emitting a beam from a light source;
- splitting the beam into a reference beam and a sample beam at an interferometer;
- directing, via a mirror system, the sample beam through a first aperture and through a partial mirror disposed over at least a portion of the first aperture, wherein the partial mirror is configured to transmit light within a first wavelength range and reflect light within a second wavelength range, and wherein the mirror system comprises a switching mirror configured to selectively direct the sample beam toward the first aperture or toward a second aperture;
- directing, via the mirror system, a portion of the sample beam reflected from a sample to a detector;
- comparing, via the detector, the reference beam with the portion of the sample beam reflected from the sample to generate a measurement signal corresponding to the sample.
(canceled)
A method of using an optical coherence tomography (OCT) system comprising:
- aligning an eye of a patient with a first aperture using a reflection in a partial mirror disposed over at least a portion of the first aperture, wherein the partial mirror is configured to pass infrared light and reflect visible light;
- aligning the eye with a fixation mark disposed on the partial mirror, wherein the fixation mark is disposed along an optical axis of the sample beam;
- and
- receiving a sample beam at the eye, wherein the sample beam passes through the first aperture and the partial mirror and is reflected back into the OCT system, and wherein a measurement of the eye is based on the reflected sample beam.
(canceled)
Dependencies are inferred from the claim text.