Optical & technical coatings

Specialized coatings for optical applications – including spherical lenses (ball lenses)

At LISS, we offer advanced thin-film deposition technologies using PVD and PACVD methods, tailored for demanding industrial and scientific applications.
We specialize in anti-reflective (AR) coatings for spherical optical lenses, enabling efficient light transmission with minimal reflection loss.
Our AR-coated ball lenses are designed for use in telecommunication systems and medical-grade optical devices, where low reflectivity and high precision are essential.
Thanks to uniform and full-surface coating deposition, we achieve exceptional optical performance even for lenses with very small diameters.

Typical Applications

Telecommunication & Photonic Systems

Fiber-to-fiber and fiber-to-laser coupling
Precision collimation in optical transceivers
DWDM/CWDM applications and data center optics

Medical Optics

Endoscopy and miniaturized diagnostic optics
Fluorescence imaging
Surgical optoelectronics with minimized reflection

Industrial & Aerospace Sensors

Optical systems for harsh environments (aerospace, automotive)
Highly reliable sensors and precision metrology systems

Research & Development

Custom coating design for lab-based optical experimentation
Development of prototypes and small batches with spectral optimization

What We Offer

Full-surface AR coatings optimized for wavelength ranges 830–1600 nm
Highly uniform deposition on curved surfaces, including ball lenses (Ø 0.5–10 mm)
Multilayer AR coatings for single or multi-band performance
Compatibility with various optical materials: BK7, lanthanum glass, sapphire
Production in ISO Class 7 cleanroom environment with in-house metrology and quality control
Durability testing according to MIL-C-48497, including heat, humidity, and chemical resistance

Technical Parameters – AR-Coated Ball Lenses

Parameter	Value
Lens Diameter	0,5–10 mm
Materials	BK7, lanthanum glass, sapphire
Technology	830–1600 nm (customizable)
Typical Reflectance	< 0,5 %
Technology	PVD, PACVD
Testing Standards	MIL-C-48497, in-house metrology
Cleanroom Environment	ISO Class 7

Why Choose LISS

In-house development and optimization of optical coatings

Integrated manufacturing, measurement, and quality assurance

Fast lead times across the EU and Czech Republic

Extensive experience in precision surface engineering

Backed by a strong group focused on innovation

Flexibility from prototyping to full-scale production

We support our customers from the R&D stage – providing prototypes with various specifications, which can be transitioned into serial production once final parameters are confirmed.