摘要:
In certain embodiments, a scanning system includes optical elements and a movement system. The optical elements include an optical fiber and a gradient-index (GRIN) lens. The optical fiber has a fiber axis that extends to an imaginary fiber axis, and is configured to transmit a light ray. The GRIN lens has a GRIN perimeter and a GRIN lens optical axis, and is configured to refract the light ray. The movement system moves a first optical element relative to a second optical element in a closed path such that the GRIN lens optical axis substantially aligns with the imaginary fiber axis at at least one point of the path and the GRIN perimeter intersects the imaginary fiber axis at at least two points of the path.
摘要:
Devices, systems, and methods that utilize at least one charged electrode to impart motion to an optical fiber positioned within an imaging probe by an electrostatic force are provided. In some embodiments, an ophthalmic imaging probe can include a handle; a cannula coupled to the handle; an optical fiber positioned at least partially within the handle and the cannula, the optical fiber configured to receive an imaging light from an imaging light source and guide the imaging light to an optical element positioned within the cannula; and an actuator system configured to impart motion to the optical fiber, the actuator system including an electrode positioned within the cannula and configured to impart motion to the optical fiber by selectively imparting an electric charge to the electrode and/or the electrically conductive layer of the optical fiber.
摘要:
An ophthalmic cannula assembly may include a cannula having an outer cannula surface and an inner cylindrical bore. A hub adjoining a proximal end of the cannula may define a maximum outer hub diameter that is greater than an outer diameter of the cannula. An optical fiber may be attached to the outer cannula surface for at least a portion of a length of the cannula. A cover material may be in contact with the outer cannula surface, and may cover at least a portion of the optical fiber. A light diffuser may be disposed at a distal tip of the optical fiber.
摘要:
Devices, systems, and methods that utilize at least one charged electrode to impart motion to an optical fiber positioned within an imaging probe by an electrostatic force are provided. In some embodiments, an ophthalmic imaging probe can include a handle; a cannula coupled to the handle; an optical fiber positioned at least partially within the handle and the cannula, the optical fiber configured to receive an imaging light from an imaging light source and guide the imaging light to an optical element positioned within the cannula; and an actuator system configured to impart motion to the optical fiber, the actuator system including an electrode positioned within the cannula and configured to impart motion to the optical fiber by selectively imparting an electric charge to the electrode and/or the electrically conductive layer of the optical fiber.