AI Article Synopsis
- - The study introduces a highly compact optical zoom endoscope that utilizes two tunable Alvarez lenses controlled by piezoelectric benders for synchronous, precise focusing.
- - These piezoelectric benders move perpendicularly to the optical axis, enabling the endoscope to achieve about 3x optical zoom without needing to reposition the scope itself.
- - With a diameter of approximately 2 mm, the endoscope's design allows it to operate with minimal movement (under 110 μm) and may be beneficial for applications in healthcare and industrial inspections.
Article Abstract
We report an ultra-compact optical zoom endoscope containing two tunable Alvarez lenses. The two tunable lenses are controlled synchronously by piezoelectric benders to move in directions perpendicular to the optical axis to achieve optical zoom while keeping images in clear focus without moving the scope. The piezoelectric benders are arranged circumferentially surrounding the endoscope optics with a diameter about 2 mm, which results in an ultra-compact form. The demonstrated endoscope is capable of optical zoom close to 3 × from field of view (FOV) 50° to 18° continuously with the required movements for its constituent optical elements less than 110 μm. Such optical zoom endoscopes may find their potential uses in healthcare and industrial inspection systems.
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| http://dx.doi.org/10.1364/OE.25.020675 | DOI Listing |
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