The Optotune ML-20-37 manually tunable lens is designed to have its lens curvature change between convex (+18 dpt), flat (0 dpt), and concave (-18dpt) by the rotation of the outer adjustment ring. This allows for the focal length of the lens to be tuned to the precise value required for an optical application. The rotation mechanism is extremely durable (>100'000 rotations), low torque and linear.

It is available with and without C-mount adapter.

ML 20-37-VIS-36D-C ML-20-37-VIS-36D

ML-20-37 with and without C-mount adapter

 

The following table summarizes the main specifications of the ML-20-37:

Standard products

Tuning
range

C-mount

Cover glass coating

Wavefront error* 

ML-20-37-36D

 -55 to +55 mm
-18 dpt  to +18 dpt		 no 400 - 700nm 0.95 / 0.19

ML-20-37-36D-C

-55 to +55 mm
-18 dpt  to +18 dpt

yes

700 - 1100nm

 0.95 / 0.19

* Wavefront error provided in λ RMS @525nm (across tuning range / at 0 dpt)

 

Applications

Optotune's manually focus tunable lens ML-20-37 is the ideal choice for applications in:

  • LED illumination 
  • Optics R&D (e.g. beam expander)
  • Education
  • Ophtalmology
  • System prototyping

 

Videos

P8 ML-20-35

Manually tunable lens working principle (also applies to ML-20-37)

Download video