Leviathan Optical Filters

Leviathan Optical Engineering is an Irish-based optical filter manufacturer.

Their work spans bespoke optical system development, stray light analysis, and high-performance accessories for astrophotography.

Founded by Dr. James Murphy, a specialist in lens and prism system design, Leviathan Optical Engineering draws inspiration from the 19th-century Leviathan of Parsonstown telescope—a symbol of ambition and technical excellence. Today, they carry forward that legacy by delivering optics that are not only precisely engineered, but purpose-built for real-world performance.