Optical Thin Film Filters

Narrowband Filters

Filters with a bandwidth up to 5% of the center wavelength

Bandpass Filters

Filters with a bandwidth of 5% to 10% of the center wavelength

Broadband Filters

Filters with a bandwidth greater than 10% of the center wavelength

Neutral Density (ND) Filters

Filters with a given level of optical density in a wide range

Multi-zone Filters

Several filters combined on the same substrate, but separated into separate zones

Multiband Filters

Multiple bandwidths in a single coverage

Linear tunable Filters

Filters whose spectral properties change linearly

At i-Photonics, we design and manufacture high-precision thin-film optical filters for lasers, spectroscopy, imaging, and industrial systems, all of which require the most reliable thin-film optical filters. With the aid of modern deposition technologies, we ensure exceptional transmittance durability and precise wavelength control.

What I-Photonics offers

I-Photonics provides custom optical filters optimized for performance in demanding applications. Our expertise includes:

Advanced vacuum coating systems for high-precision thin-film interference filters;
Filters with high transmission, sharp edge transitions, and deep blocking;
Custom solutions for UV, visible, and infrared wavelengths;
Support for glass, polymer, and specialized substrates.

Whether you need standard or fully bespoke filters, we ensure optimal optical performance and durability.

Filter types and capabilities

I-Photonics always secures exceptional durability regardless of whether the filters are standard or bespoke.

Producing all types of optical interference filters, we also create:

Banded Pass Filters (BPF), which isolate certain wavelength ranges with strong edges.
Notch Filters that block distinct spectral bands while letting other radiations pass.
LWP & SWP (Long-Wave/Short-Wave) Filters which transmit and reflect depending upon wavelength cutoffs.
Neutral Density Filters allow the usage of spectral content with excellent attenuation while altering the precision of ND.
Dichroic Filters are used in multi-spectral imaging when filters separate light by wavelength.

All our filters are designed with stable performance in extreme conditions, ensuring low absorption, high durability, and longevity.

Advanced deposition technologies

Ion Beam Sputtering (IBS) guarantees ultra-low control (±5nm edge tolerance) over wavelength region allotment.

Plasma-Assisted Reactive Magnetron Sputtering (PARMS) guarantees ultra-narrow band filtering (±1nm accuracy) with unmatched precision.

High-performance optical filter coatings to protect against weather and laser wear.

We carefully select substrates like fused silica, CaF₂, and ZnSe for their superior thermal stability and transparency-enhancing optics.

Why Choose i-Photonics?

With us, you get:

Eye-certified design: Total customization and quality assurance.
Best quality control practices: Tested dependability for each batch produced.
Expedited turnaround: Agility in R&D and OEM demands.
Multi-disciplinary engineering: Design to validation engineering support.

Get your custom optical filter solution.

I-Photonics delivers high-performance optical thin film filters for critical applications. Whether you need standard or fully custom designs, we ensure precision, durability, and optimal light control.