Manufacturer of highly precise thin‑film optical filters (200–5000 nm): long/short/multi‑bandpass, notch, neutral density, beamsplitters, and reflective mirrors delivering high transmission and strong blocking for improved signal‑to‑noise. Provides off‑the‑shelf, custom and high‑volume production with sputtered hard‑coating durability, technical/application support, and an industry‑leading lifetime warranty.