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About

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High Efficiency Anti-Reflection (HEAR) Coated Windows

High Transmission
Eliminate Back Reflections and Reduce Glare
Available in a Wide Range of Sizes

High Efficiency Anti-Reflection (HEAR) Coated Windows feature dual broadband anti-reflection coatings, reducing reflectance to ≤0.5%. Anti-reflection (AR) coatings are applied to optical surfaces to increase the system's throughput and reduce hazards caused by reflections that travel backward through the system and create ghost images. The coating virtually eliminates back reflections, offering improved readability when used in industrial or scientific displays. High Efficiency Anti-Reflection (HEAR) Coated Windows have a high transmission, making them especially suitable for various optical applications. These anti-reflective windows are available in circular and square formats, with a diverse range of sizes offered in each.

Can’t find what you need? Get a quick custom quote.

Common Specifications

Bevel:

Protective as needed

Clear Aperture (%):

≥90

Angle of Incidence (°):

Coating:

BBAR (425-700nm)

Coating Specification:

R_avg ≤0.5% @ 425 - 700nm

Substrate:

Float Glass

Surface Quality:

80-50

Wavelength Range (nm):

425 - 700

Products
Technical Information
Accessories
Related Products
Custom
Resources

Products

Technical Information

Accessories

Related Products

Cage System Optical Lens Mounts

C, S, and T-Mount Circular Optic Mounts

PUROSOL™ Optical Cleaner

1λ UV Fused Silica Windows

Custom

Edmund Optics offers comprehensive custom manufacturing services for optical and imaging components tailored to your specific application requirements. Whether in the prototyping phase or preparing for full-scale production, we provide flexible solutions to meet your needs. Our experienced engineers are here to assist—from concept to completion.

Our capabilities include:

Custom dimensions, materials, coatings, and more
High-precision surface quality and flatness
Tight tolerances and complex geometries
Scalable production—from prototype to volume

Learn more about our custom manufacturing capabilities or submit an inquiry here.

Resources

Filter

Anti-Reflection (AR) Coatings

Anti-reflection (AR) coatings are applied to optical components to increase throughput and reduce hazards caused by back-reflections.

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An Introduction to Optical Coatings

Optical coatings are used to influence the transmission, reflection, or polarization properties of an optical component.

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Beam Displacement Calculator

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Understanding Optical Windows

Determine how to select an optical window based on its material transmission, thermal and mechanical properties, and other specifications at Edmund Optics.

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Optical Windows Review

Optical Windows provide protection between an optical system or sensitive electronics and an outside environment.

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I need a window for imaging underwater. The water is filtered and at room temperature with a very small amount of detergent in it. It is flowing at low speed. Will a MgF2 coated window survive this for a few years?

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Optical Glass

Choosing the right optical glass is important. Find out factors and properties on how to select the right optical glass at Edmund Optics.

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Surface Accuracy

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BBAR Coating

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Understanding Surface Quality Specifications

The surface quality of optical components the scattering off of its surface, which is especially important in laser optics applications.

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Removing Protective Plastic Coating

A protective plastic coating protects a variety of our flat optics, such as optical windows, optical mirrors, and beamsplitters, from scratches during shipping.

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Anti-Reflection (AR) Coating

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Bevel

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Parallelism

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Seamed Edge

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Introduction to Basic Ray Optics

An understanding of refraction and basic ray optics is a critical foundation for understanding more complicated optical concepts and technologies.

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Surface Flatness

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Transmission

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How do I clean my optics?

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Clear Aperture (CA)

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Edmund Optics Global Manufacturing Facilities

Edmund Optics® (EO) manufactures millions of precision optical components and subassemblies every year in our 5 global manufacturing facilities.

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Metrology at Edmund Optics: Measuring as a Key Component of Manufacturing

Learn about the metrology that Edmund Optics® uses to guarantee the quality of all optical components and assemblies.

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Surface Quality

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