iSolutions Technology is the Main Authorised Distributor for Optotune products since 2013. The biggest advantage of focus tunable lenses is the additional degree of freedom offered to optics designers by the focus tunability of the lens. A change in lens radius of several micrometers can have the same optical effect as moving the entire lens several centimeters. Optical systems can thus be designed more compact, oftentimes with less lenses and usually with less or no translational movement.
This means that there is no more need for expensive mechanical actuators. Less movement also leads to a more robust design, which can be completely closed so that no dust can enter. Furthermore, the materials employed are all lighter than glass, saving overall weight. Less movement and weight also means less power consumption and that the response time of systems with tunable lenses can be very low, in the order of milliseconds. Another advantage becomes obvious during production. The fact that less optical parts are moved combined with the tunability of the radius during operation results in higher yield rates.
The following table summarizes the main specifications of currently available focus tunable lenses :
| Specification
|
Fast Electrically tunable lens with temp. compensation | Fast Electrically tunable lens with temp. compensation | Manual tunable lens | Fast Electrically tunable lens with temp. compensation | Fast Electrically tunable lens with temp. compensation |
|---|---|---|---|---|---|
|
EL-3-10 |
EL-10-30-C-MV |
ML-20-35 Series |
EL-10-30-TC |
EL-16-40-TC |
|
|
|
|
|
|
Size (ØxH) |
10mm x 4mm |
30mm x 9.7mm |
35mm x 8mm |
30mm x 10.7mm |
47mm x 19.9mm |
Clear aperture |
3mm |
10mm |
20mm |
10mm |
16mm |
Lens Type |
Plano convex |
Plano convex |
Plano convex to plano concave |
Plano convex to plano concave |
Plano convex to plano concave |
Focal length range |
From -77mm to +77mm |
From -600mm to +170mm |
From -40mm to +40mm |
From +120mm |
From -500mm |
Refrective Index |
1.300 |
1.300 or 1.599 |
1.300 or 1.599 |
1.300 or 1.382 |
1.300 or 1.382 |
Documentation |
OEM version
Industrial version 
OEM version
Industrial version Optotune Lens driver: USB 2.0 12-bit current control for electrical tunable lens. A total of 4096 steps having step size of 0.07mA : E-EL-4
Optotune lenses can be tailored to your specific demands in terms of size, tuning range, transmission range or speed. Tell us your requirements and we will be happy to assess the feasibility.
Here are the application videos which gives you a feeling for speed and tuning range of the lens :-
Continuous Focus with variable working distance.
Optotune's full product range at Boston Photonics West 2017.
Optotune's full product range at Vision Stuttgart 2016.
This video shows continuous focus of the EL-10-30-C-MV used for Machine vision applications.
This video shows Focus Stacking using Sanxo Scope that also comes with Autofocus.
Maunal tunable focus lens