Open AccessUltra-fast, high-quality and highly compact varifocal lens with spherical aberration correction and low power consumption
Author(s) -
Matthias C. Wapler
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.382472
Subject(s) - optics , materials science , lens (geology) , spherical aberration , wavefront , fabrication , numerical aperture , aperture (computer memory) , refractive index , optical power , focal length , elastomer , optoelectronics , laser , physics , wavelength , composite material , medicine , alternative medicine , pathology , acoustics
We present a highly compact and fast varifocal lens with aspherical tunability based on an active piezo-glass-piezo sandwich membrane. Using an optimized geometry, improved fabrication and compliant elastomer structures together with an index-matched optical fluid, we achieved an outer diameter of just 9 mm (10 mm packaged) for a clear aperture of 7.6 mm. The range of the focal power was -7 m -1 to +6 m -1 , with a wavefront error around 100 nm and a response time between 0.1 and 0.15 ms.