Abstract
Tunable lenses are becoming ubiquitous, in applications including microscopy, optical coherence tomography, computer vision, quality control, and presbyopic corrections. Many applications require an accurate control of the optical power of the lens in response to a time-dependent input waveform. We present a fast focimeter (3.8 KHz) to characterize the dynamic response of tunable lenses, which was demonstrated on different lens models. We found that the temporal response is repetitive and linear, which allowed the development of a robust compensation strategy based on the optimization of the input wave, using a linear time-invariant model. To our knowledge, this work presents the first procedure for a direct characterization of the transient response of tunable lenses and for compensation of their temporal distortions, and broadens the potential of tunable lenses also in high-speed applications.
Highlights
Focus tunable lenses are active optical elements with the ability to change their optical power in response to an electric signal
As the model requires a precise characterization of dynamic effects, we developed a novel fast focimeter that can measure optical power at high temporal sampling rates
We developed a custom high-speed driver for the tunable lenses, in order to achieve the temporal accuracy required to compensate for the dynamic effects
Summary
Focus tunable lenses are active optical elements with the ability to change their optical power in response to an electric signal They provide an additional degree of freedom in optical design and have only reached mass consumption in recent years. These lenses have enabled new design strategies for optical systems allowing higher compactness due to the use of less opto-mechanical components, and a fast frequency response [1]. Examples of those applications are depth-scan optical coherence tomography [5], 3D microscopy [6,7,8], 3D particle tracking [9], 3D displays [10], surface metrology [11], laser pulse profiling [12], endoscopy [13], beam steering [14] and medical imaging [15]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
