Optical Coherence Tomography

Optical Coherence Tomography (OCT) is a non-contact, non-invasive, high-resolution imaging and measurement technique that uses the principle of low-coherence light interference to obtain cross-sectional images of internal structures within a sample, either laterally or axially.

OCT technology can achieve micron-level resolution and supports high-speed scanning, making it widely applicable in precision engineering for material inspection and quality control, as well as in biomedical fields such as ophthalmology, dermatology, and cardiovascular medicine.

An OCT system utilizes an interferometer to split a light beam into a reference arm and a sample arm. These beams are recombined at the detector to generate interference signals, which are analyzed to reconstruct the internal structure of the sample. Compared to traditional imaging methods, OCT offers advantages such as non-contact operation, deeper imaging penetration, high contrast, and no need for contrast agents, making it one of the key technologies in precision measurement and biomedical imaging today.

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