The 850 nm Fourier domain OCT (NCU) comprises a broadband light source made up of optically coupled superluminescent LEDs emitting in a band of 770-970 nm. The intensity of radiation at the object never exceeds 1.5 mW, and due to fast scanning is focused at any given spot on the object for 45 μs only. The axial imaging resolution is 3.3 μm in air (2.2 μm in varnish and similar media), with an axial imaging range of 1.4 mm. The lateral resolution, in the standard configuration, is about 13 μm with a field of view of 17 mm x 17 mm, and the distance to the object from the most advanced element of the device equals 43 mm. If necessary, the alternate configuration may be used, providing better lateral resolution (ca 6 μm) but at the price of a smaller field of view (5 mm x 5 mm) and distance to the object (7.5 mm). The acquisition time of volume information, comprising 100 cross-sections, is ca 13 s.

Dataset/2D
Dataset/3D
Dataset/Data package (images, spectra, other)

Noncontact (no physical contact)
Noninvasive (no physical alteration)

laboratory made

medium spot 17 x 17 mm2