The compact EL-3-10 lens was designed for OEM integration into optical systems for various applications. The working principle is based on the well-established shape-changing lens technology. The curvature of the lens is adjusted by applying an electrical current. Thereby, the focal length is tuned to a desired value within very few milliseconds. The lens architecture is “push pull” which means that the lens curvature is deflected from concave to convex. With actuators based on proven voice-coil technology, the EL-3-10 focus tunable lens is extremely reliable and robust, well suited even for applications in harsh environments over large temperature ranges.

 EL-3-10

 

The following table summarizes the main specifications of the EL-3-10:

Specifications  

Dimensions (Ø x thickness)

 10 x 4 mm

Clear aperture

 3mm

Optical power

+/- 13 dpt (+/- 77 mm) 

Transmission wavelength (>94%)

420 to 1600nm (VIS & NIR coating options)

Response time (10/90% step), settling time

1, 4 ms 

Wavefront error

<0.15/<0.15λ*

Operating temperature

-20 to 65°C 

* Wavefront error provided in λ RMS @525nm with optical axis vertical / horizontal

 

Applications

Applications for Optotune's EL-3-10 are among others:

  • Microscopy
  • Biometric systems
  • Optical coherence tomography (OCT)
  • Laser illumination
  • Laser shows