Bühler Alzenau GmbH

As one of the world’s leading companies in thin-film technology, Bühler Leybold Optics develops and manufactures high-vacuum coating systems for a very wide range of applications. With its vacuum coating systems, the company helps optimize energy efficiency, convenience and food preservation, among other things. Coatings for ophthalmic and precision optics products such as lenses, lasers, or high-performance telescopes round out Bühler’s product portfolio. Buildings with coated facade glass require up to 50% less energy for heating and cooling. The Leybold Optics business area combines state-of-the-art equipment technology with comprehensive process and application know-how to offer its customers complete production solutions.


The company was founded in the mid-19th century by pioneers Ernst Leybold and Wilhelm Carl Heraeus. This gave rise to two garage companies, which merged in 1967 to form Leybold Optics. In the meantime, more than 200 employees are working in Germany. At the beginning of 2012, Leybold Optics GmbH became a subsidiary of the Bühler Group based in Switzerland. In this context, the main production of Bühler Leybold Optics takes place in Alzenau, Germany.

Worth knowing

Bühler Alzenau GmbH (formerly Leybold Optics GmbH), a business area of Bühler’s Advanced Materials business unit, is a leading manufacturer of thin-film production systems and process technology, with applications in market segments such as:

  • Fine and ophthalmic optics,
  • Automobile,
  • Packing and
  • Architectural glass.