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Focus tunable lenses
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Millisecond autofocus in a compact, robust lens – no mechanics, highest reliability. Available in clear apertures from 3 to 42 mm, with coating options spanning 400 to 2500 nm.

Inspired by the human eye, Optotune’s focus tunable lenses replace bulky mechanical translation systems with a compact, shape-changing liquid lens. By deforming an elastic polymer membrane filled with optical fluid, the lens radius can be adjusted within milliseconds – achieving the same optical effect as moving traditional lenses by several centimeters.

  • Compact designs,​
  • Fast response,​
  • High reliability,​
  • Less tolerance sensitivity,​
  • More flexibility with remote control,

Optotune’s focus tunable lenses are shape-changing lenses based on a combination of optical fluids and a polymer membrane. The core element consists of a container, which is filled with an optical liquid and sealed off with a thin, elastic polymer membrane. A circular ring that pushes onto the membrane shapes the tunable lens.

The deflection of the membrane and with that the radius of the lens can be changed by axially pushing or pulling that ring. This is usually done with voice-coil motor (VCM) actuation, controlled by current (EL Series), but can an also be achieved by mechanical actuation through rotation of a part that slides on a helix (ML Series).

Optotune’s tunable lenses replace bulky, slow-moving optics with a compact, fast, and highly reliable solution. With response times in just miliseconds and no mechanical wear, these lenses deliver billions of cycles while keeping dust out and performance consistent. Plus, fewer moving parts mean higher yields in production.
Quality control
Barcode scanners​
Microscopes
IVF incubators
Ophthlamology

Gravity compensation

While small liquid lenses up to about 7mm do not show any significant aberrations due to gravity, the membranes of larger lenses can slightly sag due to the pressure difference of the liquid that gravity creates when the lenses stand upright.​

Optotune has developed and patented a unique gravity compensation technology that allows to maintain the spherical lens shape in any orientation of the lens. An additional membrane conceals a secondary liquid with lower density and higher refractive index than the primary liquid, thus “floating above” and optically compensating the sag of the primary membrane. Fortunately, the many benefits of liquid lenses are preserved by this technology. 

Focus tunable lenses

EL series

Electrically tunable lenses​

Common applications:

machine vision, microscopy, laser processing, ophthalmology, medical

Fast, precise autofocus in milliseconds with no moving mechanics. The EL Series enables seamless integration into demanding automated systems, ideal for applications requiring high reliability, long lifetimes, and compact designs.​

ML series​

Manually tunable lenses​

Common applications:

machine vision, microscopy, laser processing, ophthalmology, medical

The sophisticated helical design of the ML series allows for large clear apertures and particularly large focal power ranges as frequently required in ophthalmic applications and illumination. Thanks to zero holding power, the ML Series can be either motorized or actuated manually.

S-mount ELM-F series

Electrical lens modules

Common applications:

machine vision, microscopy, laser processing, ophthalmology, medical

S-mount lenses for sensors up to 1/1.7″ offer a compact, cost-effective solution for embedded vision. Their small footprint fits space-limited designs while maintaining high image quality. Integrated liquid lenses enable fast autofocus without mechanical motion, increasing speed, durabilit reliably.

C-mount ELM-F series

Electrical lens modules

Common applications:

machine Vision, microscopy, laser processing, ophthalmology, medical

C-mount lenses for sensors up to 4/3″ support high resolution, wide fields of view, and high light throughput. Integrated liquid lenses enable fast, precise focus without mechanical movement, improving reliability and delivering sharp, flexible imaging for industrial and automation systems.

ELM-T series

Electrical lens modules

Common applications:

machine vision, microscopy, laser processing, ophthalmology, medical

The ELM-T series offers telecentric lenses with integrated Optotune tunable lenses, preserving telecentricity and minimizing magnification shift. It supports 0.133×–4× magnification and 1/2”–35 mm sensors, delivering distortion-free imaging with no vignetting in modules.

CCM series

Compact camera modules

Common applications:

AR/VR camera modules, AF, AF+OIS
Miniaturized camera modules with integrated liquid lens technology. The CCM Series offers fast, low-power autofocus in a tiny form factor, making it ideal for AR/VR, mobile, and automotive applications.
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