TY - GEN
T1 - Single-Shot Intraocular Lens Surface Measurement With The GelSight Topography System
AU - Moschitta, Deanna
AU - Schwiegerling, Jim
N1 - Publisher Copyright:
© 2022 SPIE.
PY - 2022
Y1 - 2022
N2 - The intraocular lens (IOL) industry is continuously evolving with more complex surface designs that require affordable and timely surface measurements of extended depth of focus (EDOF) and diffractive multifocal lenses. Current systems to measure grating profiles, such as AFM, SEM, or optical profilometers are expensive, need intensive training, and are sometimes destructive. Furthermore, the fields of view of these systems are typically limited, so measuring the full aperture of the lens requires repeated measures and stitching of the result. The system developed allows for quick profile measurements with easy to obtain equipment that will help examine and develop diffractive multifocal IOLs. This study integrates a 3D GelSight camera (GelSight, Inc, Waltham, Massachusetts), a stepper motor, and an Arduino board with driver board to automate the measurement of IOL gratings. The GelSight 1.0X camera has a height resolution of 1.0 µm and is provided with software that will be used to select and export data from areas of interest. Post processing will be required to analyze the data from the GelSight, but can be customized to the user’s needs. Using simple Arduino code and a stepper motor to move the camera onto the sample allows for a hands-free measurement technique that promotes accuracy and repeatability. Automation allows for beginners to quickly use the newly proposed system for many profile measurement applications with little setup time. The system will benefit the development of IOLs as a quick and easy check for the production process of these advanced lens designs.
AB - The intraocular lens (IOL) industry is continuously evolving with more complex surface designs that require affordable and timely surface measurements of extended depth of focus (EDOF) and diffractive multifocal lenses. Current systems to measure grating profiles, such as AFM, SEM, or optical profilometers are expensive, need intensive training, and are sometimes destructive. Furthermore, the fields of view of these systems are typically limited, so measuring the full aperture of the lens requires repeated measures and stitching of the result. The system developed allows for quick profile measurements with easy to obtain equipment that will help examine and develop diffractive multifocal IOLs. This study integrates a 3D GelSight camera (GelSight, Inc, Waltham, Massachusetts), a stepper motor, and an Arduino board with driver board to automate the measurement of IOL gratings. The GelSight 1.0X camera has a height resolution of 1.0 µm and is provided with software that will be used to select and export data from areas of interest. Post processing will be required to analyze the data from the GelSight, but can be customized to the user’s needs. Using simple Arduino code and a stepper motor to move the camera onto the sample allows for a hands-free measurement technique that promotes accuracy and repeatability. Automation allows for beginners to quickly use the newly proposed system for many profile measurement applications with little setup time. The system will benefit the development of IOLs as a quick and easy check for the production process of these advanced lens designs.
KW - 3D Profile
KW - Arduino
KW - Diffraction Gratings
KW - GelSight
KW - Intraocular Lens
UR - http://www.scopus.com/inward/record.url?scp=85141846279&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85141846279&partnerID=8YFLogxK
U2 - 10.1117/12.2632400
DO - 10.1117/12.2632400
M3 - Conference contribution
AN - SCOPUS:85141846279
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Optical Manufacturing and Testing XIV
A2 - Kim, Daewook
A2 - Choi, Heejoo
A2 - Ottevaere, Heidi
A2 - Rascher, Rolf
PB - SPIE
T2 - Optical Manufacturing and Testing XIV 2022
Y2 - 22 August 2022 through 24 August 2022
ER -