Common Resources

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.