Surgical Microscopes Using Optical Coherence Tomography and Related Systems

摘要

Some embodiments of the present inventive concept provide optical coherence tomography (OCT) systems for integration with a microscope. The OCT system includes a sample arm coupled to the imaging path of a microscope. The sample arm includes an input beam zoom assembly including at least two movable lenses configured to provide shape control for an OCT signal beam; a scan assembly including at least one scanning mirror and configured for telecentric scanning of the OCT signal beam; and a beam expander configured to set the OCT signal beam diameter incident on the microscope objective. The shape control includes separable controls for numerical aperture and focal position of the imaged OCT beam.

主权项

1. An optical coherence tomography (OCT) system for integration with a microscope, the OCT system comprising:
a sample arm coupled to the imaging path of a microscope, the sample arm comprising:
an input beam zoom assembly including at least two movable lenses configured to provide shape control for an OCT signal beam;a scan assembly including at least one scanning mirror and configured for telecentric scanning of the OCT signal beam; andrelay optics including a beam expander configured to set the OCT signal beam diameter incident on the microscope objective;wherein the shape control includes separable controls for numerical aperture and focal position of the imaged OCT beam;wherein the microscope objective is configured to image in a visible spectral range;wherein the microscope objective is anti-reflection coated for a visible spectral range and an infrared spectral range; andwherein the relay optics including a beam expander comprises optics to pre-compensate aberration of the OCT signal beam in an infrared spectral range arising from the microscope objective configured for imaging in a visible spectral range.