Portable OCT and its Industrial Application Simple OCT for Industrial Use and Basic Health Care

摘要

Portable OCT; Optical Coherence Tomography has been developed for industrial use. This portable OCT is time-domain type and it is evolved independently from the medical OCT in terms of product cost, system size, flexibility, and its concept. To realize the unique concept, the new scanning mechanism was devised, which is consisted of a rotating corner-reflector and a fixed mirror. Its scanning rate is not so high (<200scan/s), while its measurement range can be enlarged easily. The Spectra-domain OCTs such as Fourier-domain and Swept-source OCTs needs signal processing to obtain the information in the depth direction. Their resolution depends on the scanning range and the sampling-rate. The time-domain OCT has the feature that the resolution only depends on the spectrum width of the incident beam in isolation from the measurement range. The depth information can be derived from the measured data easily and directly. The system structure of the portable OCT is elastic in viewpoints of design of the optical prove and the measurement range, and it is applied in various fields to date. Industrial use, educational aim, and basic health care are its applications. In this report, the concept and the technical feature of the portable OCT are mentioned. The concrete applications are introduced to represent the flexibility of the portable OCT, too.