H. L. Clausing Inc.

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H. L. Clausing Inc. produces both off‑the‑shelf and bespoke optical coatings serving sectors such as telescope optics, medical equipment, aerospace, point‑of‑sale displays, and various research fields. Its portfolio includes coatings of aluminum, silver, gold, protected metals, platinum, rhodium, alloy blends, copper, nickel, as well as quartz, sapphire, indium‑tin‑oxide, and both UV and IR solutions. In addition, it fabricates custom reflectors and mirrors, and provides optical testing and coating services. Certain product lines are qualified to meet military specifications.

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