A diverse range of materials and sizes to meet your needs.

Commercial Quality Square Windows

Non-precision, square windows commonly used for sight glasses, instrument windows, beamsplitter substrates, vacuum windows, etc. All catalog windows can be customized to your specification, whether modification of dimension or adding a thin film coating. Read more about modifying a catalog optic.


Quality Optics from a Trusted Supplier

American Owned & Operated

Committed to supporting American industry and ensuring the highest-quality production standards.

Military & Defense Supplier

Esco Optics proudly manufactures precision optics for all branches of the armed forces land, sea, air and space.

ITAR Registered & Compliant

Esco manufactures compliant ITAR optics for all of its customers with the strictest confidentiality.

Making Light Work

Dedicated to fostering connections, collaboration, and innovation across the optics manufacturing industry.