Design faster and more compact optical systems without complex mechanics using the electrically focus tunable lens EL-10-30-C. By applying a current of 0 to 300mA, the focal length of the 10 mm aperture lens can be tuned to a specific value within milliseconds. The EL-10-30-C also features threads on either side for easy mounting as well as the possibility to replace the cover glass with a fixed focus offset lens, allowing for free adjustment of the focal length range according to the requirements of your application.

 

EL-10-30-C (OEM version) EL-10-30-Ci (industrial version)
EL-10-30-C
(OEM version)
EL-10-30-Ci
(industrial version)

 

The EL-10-30-C has two main optical configurations:

  1. The basic configuration has planar cover glasses and a focal tuning range of 200mm down to 100mm, making this the best choice for macro imaging.
  2. The "MV" configuration is optimized for the machine vision market. It contains a negative offset lens so that the over all focal tuning range goes from slightly negative down to 286mm, making this the ideal choice for combinations with infinity corrected fixed-focus lenses.

The following table summarizes the main specifications of the EL-10-30-C series:

Standard products*

Tuning range with Lens Driver 4
(0 - 250mA)

Integrated offset lens

Cover glass coating

Wavefront error**

EL-10-30-C-VIS-LD 200 to 100 mm
5 to 10 dpt
No 400 - 700nm <0.15 / <0.25 λ
EL-10-30-C-NIR-LD 200 to 100 mm
5 to 10 dpt
No 700 - 1100nm <0.15 / <0.25 λ
EL-10-30-C-VIS-LD-MV -667 to +286mm
-1.5 to +3.5 dpt
Yes (-150mm) 400 - 700nm <0.15 / <0.25 λ
EL-10-30-C-NIR-LD-MV -667 to +286 mm
-1.5 to +3.5 dpt
Yes (-150mm) 700 - 1100nm <0.15 / <0.25 λ

* All the above models are available with a 6-pin FPC connector (OEM version) or with a 6-pin Hirose connector (industrial version)
** Wavefront error provided in λ RMS @525nm with optical axis vertical / horizontal

Since 2014 all lenses offer "Focal Power Mode", which makes use of calibration data saved directly on the lens, allowing for open loop control including temperature compensation at a repeatability of typically +/-0.1 diopters.

Applications

Applications for Optotune's EL-10-30-C are among others:

  • Machine vision
  • Microscopy
  • Biometric systems
  • Optical coherence tomography

 

Videos

P1 continuous focus

Continuous focus with the EL-10-30-C and a time-of-flight distance sensor

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P2 Microscopy

Three examples of Z-stepping in mircoscopy with the EL-10-30-C

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