COHERENT SHIPS 50 MILLIONTH THIN FILM OPTICAL FILTER Coherent Advanced Coating Center in Santa Rosa, California, has shipped its 50 millionth thin-film filter, marking a major milestone in the company’s 25-year history of precision optical innovation. SAXONBURG, Pa., Sept. 10, 2025 (GLOBE NEWSWIRE) -- Coherent Corp. (NYSE: COHR), a global leader in photonics, announces that its Advanced Coating Center in Santa Rosa, California, has shipped its 50 millionth thin-film filter, marking a major milestone i ...