1. Articles from Kinpui Chan

    1-4 of 4
    1. Swept-source optical coherence tomography (SS-OCT) phase stabilization with reference signal calibration

      Swept-source optical coherence tomography (SS-OCT) phase stabilization with reference signal calibration

      A reference signal having a known induced optical delay is used for phase stabilization of optical coherence tomography (OCT) interferograms, and for correcting sampling differences within OCT interferograms, in single mode and multimodal OCT systems. The reference signal can then be used to the measure time shift or sample clock period shifts induced in the interferogram signal by the OCT system. A corresponding OCT interferogram signal can then be corrected to remove the shift induced by the system based on the determination.

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    2. Detection of missampled interferograms in frequency domain OCT with a k-clock

      Detection of missampled interferograms in frequency domain OCT with a k-clock

      Optical coherence tomography light sources can be non-linear and attempts to linearize them can lead to asynchrony between the light source and A-line scans and missampling in the scans causing signal noise. Accordingly, a system and methods are provided herein to detect missampling by obtaining a plurality of interferograms; providing at least two wavenumber reference signals at different wavenumbers, wherein the wavenumber reference signals comprise attenuated or enhanced portions of each of the plurality of interferograms; aligning each of the plurality of interferograms according to one of the at least two wavenumber reference signals; and for each of the plurality ...

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    3. Optical imaging apparatus, optical imaging method, apparatus for setting characteristics of a light source, and method for setting characteristics of a light source

      Optical imaging apparatus, optical imaging method, apparatus for setting characteristics of a light source, and method for setting characteristics of a light source

      An embodiment provides a method for setting the characteristics of the light to be output from a light source unit for optical coherence tomography, using a computer. This method is performed by using relation information in which a representative wavelength, a wavelength range including said representative wavelength, and the light loss amount due to absorption by a medium are related to each other. This method includes the following steps: setting each value of a first parameter and a second parameter among the representative wavelength, the wavelength range, and the light loss amount; acquiring a value of a third parameter among ...

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    4. Optical image measurement device

      Optical image measurement device
      An optical image measurement device comprises: a light source configured to output a light having low temporal coherence and low spatial coherence; an optical system configured to split the light into a signal light and a reference light and superimpose the signal light having passed through a measured object and the reference light, thereby generating an interference light; a light receiver configured to receive the interference light and output an electric signal; and a forming part configured to form an image of the measured object based on the electric signal, wherein: the light receiver has a light receiving face on ...
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    1-4 of 4
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    Optical image measurement device Optical imaging apparatus, optical imaging method, apparatus for setting characteristics of a light source, and method for setting characteristics of a light source Detection of missampled interferograms in frequency domain OCT with a k-clock Swept-source optical coherence tomography (SS-OCT) phase stabilization with reference signal calibration Trojan-Horse Diameter-Reducible Nanotheranostics for Macroscopic/Microscopic Imaging-Monitored Chemo-Antiangiogenic Therapy Thickness of retinal pigment epithelium–Bruch’s membrane complex in adult Chinese using optical coherence tomography Interocular symmetry of optical coherence tomography parameters in healthy children and adolescents Fluorescein Leakage and Optical Coherence Tomography Angiography Features of Microaneurysms in Diabetic Retinopathy Cross-free in both lateral and axial directions Fourier-domain full-field optical coherence tomography Microperimetry, Humphrey field analyzer, and optical coherence tomography in detecting glaucoma: a comparative performance study Scanning optimization of an electrothermally-actuated MEMS mirror for applications in optical coherence tomography endoscopy Near-infrared active superparamagnetic iron oxide nanoparticles for magnetomotive optical coherence tomography imaging and magnetic hyperthermia therapeutic applications