Tunable Lens System

About the Tunable Lens System

ASI’s Tunable Lens system consists of the C60-TUNELENS-4F assembly along with the TGTLC card of the TG1000 controller. The system lets the user remotely control the focus of the system without moving the objective.  C mounts are used to mount the C60 Tunable 4F assembly to the imaging camera and to the microscope’s photo port.

The C60-TUNELENS-4F assembly houses a shape changing polymer lens or tunable lens. The TGTLC card can vary the focal length of the lens by varying the current. The C60-TUNELENS-4F assembly is designed to be used with a microscope with the tube lens focused to the Back Focal plane of the objective so a change in the focal length of the tunable lens produces a focus change in the image too. The amount of focus change depends on the optics of the microscope, and the type of Objective.

For example  in an ASI RAMM Microscope, a 20x Objective produces 80 microns of focus change, while a 60x objective produces  8 microns of focus change. The focal length change of the tunable lens itself is +8 diopters to 20 diopters.

More Info

Tunable Lens System Features
  • TGTLC card can control up to 2 of the C60-TUNELENS-4F assemblies
  • Control with serial commands, manual input devices (knob or joystick), or a 0-5V analog signal
  • Aliasing is reduced with an onboard 5th order filter.
  • Open loop control
  • Very fast, 15ms transient response. Resonant frequency at 150Hz and 600Hz.
Tunable Lens System Applications
  • With fast response time, the Tunable lens is a good substitute for Piezo based focus devices
  • Acquire Z series without moving the objective
  • Performs like a Continuous focus device when used with ASI’s XYZ Tracker Plugin in MicroManager
Tunable Lens System Datasheets

Tunable Lens System

Tunable Lens System Manual

Tiger Tunable Lens Card
ASI XYZ Tracker Plugin