We present a sensor-based, real-time position feedback mechanism for piezoelectric fiber-based optical scanners. In this method, a micro-magnet attached to the tip of the fiber cantilever generates a three-dimensional magnetic field that can be measured by a micro-sized 3D Hall sensor embedded in the cap of the endoscopic probe. A previously recorded mapping between the magnetic field distribution on the sensor and the corresponding spatial location of the magnet, which is invariant with respect to the scanner operation, can then be used at any given time to recall the position of the laser spot on the imaging plane.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.