Kopp Glass was founded in 1926 from the reorganization of the Pittsburgh Lamp, Brass and Glass Company. The strength and core competency of the original company was the ability to develop and mold beautiful glass lamps and tableware in a wide range of colors. Those same core competencies are among the competencies that make Kopp the unquestionable leader in its field today.

Kopp Glass expanded into the industrial and technical glass market in its early years through the development of “selenium red” glass. This glass became the standard for railroad signal lighting and the rest is history.

Through the years, Kopp Glass has continued to make important contributions in the aerospace, industrial, scientific, transportation, and other markets. In the latter part of the 20th century, our glass scientists developed monolithic night vision (NVIS) compatible filters used in many of the world’s military aircraft for night operations. These filters allow pilots to operate with night vision goggles without being blinded by the instrumentation lighting.

In the early 1980’s, Kopp Glass entered the filter glass business. This product line continues to be an important and strategic part of the company today. We continue to add new products to the line and to improve product quality to meet the needs of our customers.

As markets and products have changed over the years and so has Kopp. Today our products can be found all over the world. We continue to upgrade our facility and manufacturing capability and to develop our technical expertise. Every day we use our expertise to develop innovative and unique solutions for our customers that create value and differentiate their products.



Do you need to create complex, custom glass components or lenses? Our integrated manufacturing facility can support you from idea to design to production. For 90 years, we have manufactured technical glass that meets the demanding requirements of diverse industrial, technical, and commercial applications.

Our glass engineering capabilities and precision molding expertise enable you to see your innovative idea come to life.


With more than 200 active glass compositions available, you’re sure to find a glass that meets your requirements.

Our portfolio of colored filter glasses features transmission properties from the UV to visible to IR wavelengths. Learn more about our filter glass portfolio:



As a fully integrated glass manufacturer, our team of optical, material, and glass engineers are on-site and collaborate closely with our production teams to create high-quality parts on-time and in-spec.

Leverage our R&E team to develop comprehensive solutions for your toughest problems. We can help you:

  • Develop custom glass compositions
  • Design optical lenses for LEDs
  • Measure and test glass’ physical and optical properties


Use our spectral calculator to select the right filter glass for your application and to calculate transmittance data at specific wavelengths.


Our team of glass and material scientists, optical engineers, and industry experts share their expertise with you on our blog, Glass Transforming Light.


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