EL-16-40-TC
With a clear aperture of 16mm Optotune presents the world‘s largest electrically focus tunable lens bringing fast and reliable focus control to high end applications.
Based on the well-established shape-changing lens technology, the EL-16-40-TC can be shaped from a flat zero-state into a plano-concave or plano-convex lens, resulting in a focal tuning range of up to -10 to +10 diopters (at -250 to +250mA).
Response & settling times are 5 & 25ms, respectively, which is magnitudes faster than most mechanical alternatives. Thanks to the robust VCM actuated design the lens can run at high frequencies and performs reliably over billions of cycles.
The design was optimized to minimize thermal drift effects to as little as 0.02 dpt/°C and with the built in temperature sensor, an overall reproducibility of typically +/- 0.05 diopters is achievable.
Key advantages:
Large clear aperture of 16mm
Fast response time of 5ms
High repeatability of typically +/- 0.05 dpt
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EL-16-40-TC with thread adapters and Hirose connector (industrial version)
Configurations
The EL-16-40-TC is available in its compact form for OEM integration but also with multiple thread adapters and a robust Hirose connector for industrial use, where the tunable lens can be easily combined with off-the-shelf imaging lenses.
Two different membrane configurations allow for a focal power range of 5 and 20 dpt, respectively, and cover glasses are available for VIS & NIR coatings.
Applications
Optotune's EL-16-40-TC is the ideal choice for:
Refraction correction in ophthalmic devices
EL-16-40-TC compact OEM version
The following table summarizes the main specifications of the EL-16-40-TC series:
| Product version* | Range of optical power (focal length) | Wavefront error** | Top thread | Bottom thread |
|---|---|---|---|---|
| EL-16-40-TC-VIS-5D | -2 dpt (-500 mm) to 3 dpt (333 mm) | <0.25 / <0.5 λ | None | None |
| EL-16-40-TC-VIS-20D | -10 dpt (-100 mm) to 10 dpt (100 mm) | <0.50 / <2.5 λ | None | None |
| EL-16-40-TC-VIS-5D-M25.5 | -2 dpt (-500 mm) to 3 dpt (333 mm) | <0.25 / <0.5 λ | M25.5x0.5 male | M40.5x0.5 female |
| EL-16-40-TC-VIS-5D-M26 | -2 dpt (-500 mm) to 3 dpt (333 mm) | <0.25 / <0.5 λ | M26x0.706 male | M40.5x0.5 female |
| EL-16-40-TC-VIS-5D-M27 | -2 dpt (-500 mm) to 3 dpt (333 mm) | <0.25 / <0.5 λ | M27x0.5 male | M40.5x0.5 female |
| EL-16-40-TC-VIS-5D-M30.5 | -2 dpt (-500 mm) to 3 dpt (333 mm) | <0.25 / <0.5 λ | M30.5x0.5 male | M40.5x0.5 female |
| EL-16-40-TC-VIS-5D-C | -2 dpt (-500 mm) to 3 dpt (333 mm) | <0.25 / <0.5 λ | C-mount male | C-mount female |
| EL-16-40-TC-VIS-5D-M42 | -2 dpt (-500 mm) to 3 dpt (333 mm) | <0.25 / <0.5 λ | M42x1 male | M42x1 female |
*All models are available with NIR coating or custom coating on request
** Wavefront error provided in λ RMS @525nm with optical axis vertical / horizontal. High performance <0.1 λ RMS available upon request.
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