• Focus tunable lenses

EL series

The EL series brings fast and reliable focus control to optical systems worldwide. By precisely controlling focal power with a small electrical current, these lenses eliminate bulky mechanics and enable compact, durable designs.

With response times in the range of 1-25 milliseconds and apertures ranging from 3 to 16 mm, the EL series is trusted in applications from machine vision and microscopy to ophthalmology, laser processing, and 3D imaging.

Product variants

Compact, ultra-fast focus control

The EL-3-10 is designed for seamless OEM integration where space is limited. Using Optotune’s shape-changing lens technology and a “push-pull” architecture, it can switch from concave to convex in under a millisecond. With robust voice-coil actuators, it delivers reliable performance even in harsh environments and across wide temperature ranges.

Key advantages:
  • Ultra-fast response time < 1 ms​
  • Large focal power range of 26 diopters​
  • Extremely low power consumption (< 15 mW for +/-5 dpt)​
  • Reliably reaching 1B cycles in harsh environments
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Perfect balance of performance and cost

The EL-7-20-TC is ideal for compact systems that do not want to compromise on good repeatability, which is ensured thanks to very low thermal sensitivity, paired with temperature sensing and 100% individual calibration. Tunable from plano-concave to plano-convex, the EL-7-20-TC covers –6 to +8 diopters in a millisecond.

Key advantages:
  • Very fast rise & settling times of 1 & 6 ms​
  • Slim housing that adds only 4 mm in optical axis​
  • Excellent repeatability of typically 0.02 dpt​
  • Low power consumption of 50mW for a 5 diopter range
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The all-rounder for a wide range of applications

Developed from more than a decade of customer feedback, the EL-12-30-TC sets a new standard for compact, high-performance liquid lenses. Tunable from plano-concave to plano-convex, it achieves a large range of –6 to +10 diopters in few milliseconds. Best in class thermal sensitivity, paired with temperature sensing and 100% individual calibration make this one of the most repeatable liquid lenses on the market.

Key advantages:
  • Fast rise & settling times of 3 & 10 ms​
  • Slim housing that adds only 5.8 mm in optical axis​
  • Excellent repeatability of typically 0.02 dpt​
  • Low power consumption of 50mW for a 5 diopter range
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Large aperture for high-end applications

With a clear aperture of 16mm, the EL-16-40-TC represents the world’s largest electrically focus tunable lens. Two membrane options offer focal power ranges of -2 to +3 and -10 to +10 diopters at -250 to +250mA. The high-precision static lens shaper design allows for best in class concentricity and pointing stability, as well as diffraction-limited wave front errors in selected lenses. Integrated temperature sensing and 100% calibration provide for excellent repeatability, making the EL-16-40-TC the lens of choice for the most demanding applications.

Key advantages:
  • Largest clear aperture (16 mm)​
  • Fast rise & settling times of 5 & 13 ms​
  • Excellent focus repeatability <0.02 dpt and pointing stability <1 pixel​
  • Available with a variety of threaded mounting options
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Product nameFocal power range (dpt)Clear aperature (mm)Outer diameter (mm)Rise / setting time (ms)hf:tax:tax-focal-power-rangehf:tax:clear-aperature-mmhf:tax:outer-diameter-mmhf:tax:rise--setting-time-ms
EL-3-10-13 to 133101 / 3Details13-to-133101-3
EL-7-20-TC-6 to 87201 / 6Details6-to-87201-6
EL-12-30-TC-6 to 1012303 / 10Details6-to-1012303-10
EL-16-40-TC-10 to 1016405 / 13Details10-to-1016405-13

Explore other series

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

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.

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.