Understanding the technologies and processes available to manufacture optical filters and replicated mirrors is key to the realization of an effective solution for an optical product design. While many companies are limited in their capabilities and resources, we strive to assemble the broadest base of technologies for the manufacture of optical filters and replicated mirrors. This breadth of capabilities and expertise allows solutions which are cost effective while maintaining stringent performance targets. For further information about our ability to configure a solution to meet your needs, please call our sales engineers at 508-528-4411 or contact us via email at or

Common Resources - Corion Filters & Replicated Mirrors

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Surface Quality

We use well known U.S. Military specifications to define the requirements for Surface Quality of our products and the inspection methods to be used to determine conformance to the stated specifications. The most commonly referenced specifications include MIL-PRF-13830, MIL-O-13830, MIL-F-48616 and MIL-C-48497.

Reliability Testing

Our filters and mirrors are tested for reliability and our processes continually refined with the latest analytical instruments and methods assembled to meet the specific requirements of our customers products. We utilize test methods prescribed in MIL-STD-810 to validate durability of our products under different operational conditions. We also use specifications including MIL-C-675, MIL-M-13508, MIL-O-13830, MIL-F-48616 and MIL-C-48497 for validating specific coating durability parameters such as hardness, adhesion, solubility, and abrasion resistance.

Laser Damage

For certain applications, filters and coatings that we produce may be exposed to laser radiation. For those products, we conduct laser damage threshold testing to insure that the coatings will not be damaged by laser energy levels that are anticipated to be present in the application. In this article, we discuss the basics of laser energy levels.

Optics Cleaning Basics

The vast majority of the optical filters that we manufacture are either surface-coated with extremely high durability refractory metal oxide coatings resulting from our Stabilife processes, or laminated construction with no exposed coatings. Some of our products are produced with surface coatings using semi-hard materials. As with all optics, optical filters should be handled with care to preserve their high quality finishes. Cleaning using techniques developed for optics will insure the best results.

Optics Cleaning - Bare Gold Coatings

Many of our replicated mirrors are manufactured with bare gold coatings. These coatings provide excellent reflectivity from the mid-visible through the infrared region of the spectrum. The absence of a dielectric protective over-coating on these products makes them challenging to clean. The method that we use in our manufacturing operation is very effective at removing mild contamination from the coated surfaces.

Corion Filters Resources

Stabilife® Coating

Stabilife® optical filters and coatings are manufactured using our patented Hybrid Plasma Deposition (HPD) process for the deposition of metal oxide thin film optical coatings. This process yields highly dense, thin film coatings with extraordinary hardness, abrasion resistance, and adhesion to the substrate.

Filter Construction

Combining our filters in assemblies provide interesting and effective solutions to problems. Our ability to provide laminated or mechanical assembled filters sets us apart from filter manufacturers that are only capable of producing single substrate solutions. This capability enables solutions for filter challenges that cannot be addressed by all-reflective constructions.

Filter Lifetime

Selection of construction method and manufacturing processes directly impacts filter lifetime. From thermal and environmental challenges to spectral stability in variable exposure applications, millions of filters deployed decades ago continue to perform in demanding environments.

Replicated Mirrors Resources

Why Choose Replication?

Replication is an effective means of locating optical surfaces in otherwise inaccessible locations, producing lightweight or low inertia optics, and/or reducing optical system cost. Learn more about the benefits of replication in this technical resource.

Replication Process

Replication is the process of manufacturing optics by transferring the optical surface of a master (or mold) to one or more copies of the surface. The copies, which only approximate the final surface before replication, then take on the precise characteristics of the master surface.

Replication Substrates

Replication substrate materials can have a significant impact on the accuracy and stability of the replicated product. A general background in the influencing factors is critical when selecting the appropriate substrate requirements.

Limitations of Replication

Limitations of replicated optics must be taken into consideration when choosing the best solution. Our in depth understanding of these limiting factors ensure that our customers are satisfied when replication is used to meet their needs.