Bluetooth Low Energy Driver for Varifocal Liquid Crystal Lenses Articles uri icon

publication date

  • September 2025

start page

  • 1

end page

  • 7

issue

  • 2013407

volume

  • 74

International Standard Serial Number (ISSN)

  • 0018-9456

Electronic International Standard Serial Number (EISSN)

  • 1557-9662

abstract

  • Liquid crystal (LC) adjustable lenses require numerous electrodes for precise phase modulation. This article presents an electronic driver for varifocal LC lenses, engineered to control devices featuring up to 80 electrodes and requiring activation voltages below 10 Vrms. The system leverages 14-bit digital-toanalog converters (DACs) and a programmable system-on-chip (SoC) microcontroller with integrated Bluetooth low energy (BLE) for wireless control via a smartphone graphical user interface (GUI). Its performance is validated using 24-electrode spiral phase plates (SPPs) and 72-electrode spiral diffractive lenses (SDLs), demonstrating the ability to address diverse topologies at refresh rates up to 180 frames/s. This capability enables advanced functionalities such as dynamic focusing and chromatic aberration correction.

keywords

  • lenses;electrodes;root mean square;spirals;liquid crystals;voltage control;instruments;microcontrollers;mathematical models;bluetooth low energy;bluetooth low energy (ble);digital to analog converter (dac);electronic driver;liquid crystal (lc);programmable system on chip (psoc);varifocal lens