Optical Coatings

Over 900 Coating Designs from 120nm to 20µm

UV, Visible, NIR, SWIR, and LWIR Spectral Ranges

Single and Multi-Layer Anti-Reflection, Filter, Polarizing, and Metallic Designs

Hundreds of Stock and Custom Optical Coating Options

Overview

Optical Coatings are a critical portion of the finished optical component or assembly. Accurate optical coating design and production can mean the difference between the component failing in the field, or lasting for the intended lifetime of the project. Edmund Optics^® has extensive coating capabilities, and expertise in producing coatings for advanced diagnostic applications, harsh environment imaging assemblies, and applications throughout the ultraviolet (UV), visible (VIS), and Infrared (IR) spectral regions. All optics are meticulously cleaned, coated, and inspected in a clean room environment, and subjected to the environmental, thermal, and durability requirements specified by our customers. For more information about optical coating options, contact us.

Capabilities

Edmund Optics^® produces dozens of stock anti-reflection (AR) and metallic mirror coatings and an even wider range of custom optical coatings in our internal coating facilities. If our standard coating options will not work for your application, we will work with you to design a custom coating.

Filters – Fluorescence, Dichroic, Narrow Bandpass, Multi-Bandpass, Notch, Edge (SWP and LWP)
Anti-Reflection – Single Layer, High Efficiency Multi-Layer (Broadband), Laser V, Double Laser V
Beamsplitters – Polarizing, Non-Polarizing
High Laser Damage Threshold – Anti-Reflection, High Reflection
ITO Conductive
Mirrors – Protected and Enhanced Aluminum, Silver, and Gold, "Hot" and "Cold" Dielectric, Multi-Layer Dielectrics
Specialized Designs – Build to Print, Custom Design and Development for UV, Visible, Infrared (NIR, MWIR, SWIR, LWIR)

General Coating Capabilities
Dimensions (Diameter or Square)	2 – 1000mm
Substrates	All borosilicate glass types, fused silica, calcium fluoride, silicon, and germanium
Spectral Ranges	120nm – 20μm
Edge Steepness (T50% to OD>4)	<0.5%
Spectral Edge Tolerance	<1% Deviation, <0.2% Special Cases
Blocking	>OD 7, measured*
Neutral Density Tolerance	OD ±5%
Center Wavelength CWL	±1nm
Bandpass Filter Bandwidth	1nm - Broadband
SWP, LWP Pass Bandwidth	100 - 1580nm
Transmission	>95%, Typical
Reflection	0.1 – 99.95%
Polarization (S:P)	10,000:1
Laser Damage Threshold	20 J/cm² @ 1064nm @ 20ns Pulses typical if specified
Number of Layers	200+
Durability	MIL-PRF-13830B APP C, PARA C.3.8.4, PARA C.3.8.5, MIL-C-48497A

*Measured in the UV-visible range

Equipment

Edmund Optics^® has state-of-the-art optical coating facilities in the US, Japan, and Singapore with capabilities including:

E-Beam Deposition
Ion-Assisted Deposition
Ion Beam Sputtering
Magnetron Sputtering
Thermal Evaporation
Hard Coatings for Stringent Environments and Durability
Automated Ultrasonic Cleaning

Metrology

Edmund Optics^® performs a range of testing to ensure the highest performance from our stock and custom optical coatings. Coating metrology equipment:

Learning Resources

Application Notes

Technical information and application examples including theoretical explanations, equations, graphical illustrations, and much more.

Introduction to Optical Coatings
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Anti-Reflection Coatings
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Metallic Mirror Coatings
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Benefits of Hard Coatings
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The Complexities of High-Power Optical Coatings
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Videos

Informative corporate or instructional videos ranging from simple tips to application-based demonstrations of product advantages.

What’s New in Optical Coatings Video Series
Watch

Calculators

Links to technical articles appearing in industry publications authored by Edmund Optics^® or featuring contributions from EO's engineering team and key management.

No One-Size-Fits-All Approach to Selecting Optical Coatings
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Improving laser optics coating
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Optical Coating Technology and Applications: Past and Present to Future
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Creating Complex Coatings
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The key to coatings
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