Compact Imaging’s MRO (Multiple Reference OCT) technology is a new form of time-domain optical coherence tomography (OCT). OCT, which has been widely adopted in clinical health care settings, is similar to ultrasound but, instead of sound, it uses light to scan 1 – 2 mm below the surface of tissue (or any translucent material) and detect its light scattering properties. MRO makes available the safe and powerful scanning capabilities of conventional OCT but in a simple, miniature design for use in mobile or remote applications.
At the core of the MRO architecture is a reference mirror mounted on a low-cost actuator, such as a voice coil. When paired with a partial mirror, the combination enables MRO to generate multiple reference signals simultaneously that interfere with light back-scattered from various depths within the target. These result in continuous depth scans that can be processed into images and measurements of the target’s features, properties and behaviors.
Superluminescent diode (SLD) at wavelength chosen to optimize penetration.
Directs the light into the target and to the reference mirror.
Moves reference mirror small distance to generate up to 3,000 depth scans/second.
Reference and partial mirrors interact to simultaneously form multiple scan segments.
Detects composite interference signals for signal processing and analysis.