Polishing Calcium Fluoride (CaF₂) Precision Optics | Challenges, Abrasives & Process Strategies скачать в хорошем качестве

Polishing Calcium Fluoride (CaF₂) Precision Optics | Challenges, Abrasives & Process Strategies

Calcium fluoride (CaF₂) is a critical material for high-performance UV and IR optical systems due to its excellent transmission over a wide wavelength range. At the same time, CaF₂ is one of the more unforgiving materials in optical fabrication. Its low hardness and brittle nature make it highly susceptible to edge chipping, subsurface damage, and inconsistent surface finishes during grinding and polishing. In this technical webinar recorded at the Optical Fabrication Summit 2026, Pureon, in collaboration with Photonics Media, discusses practical approaches to overcoming polishing challenges in calcium fluoride precision optics. The presentation examines why conventional cerium oxide abrasives often reach their limits when processing CaF₂ and introduces alternative diamond- and alumina-based polishing strategies. Based on a structured process study from ground surfaces through final finishing, the webinar highlights how abrasive selection, particle size, and polishing pad choice directly impact surface roughness, defect control, and overall process efficiency. Key topics covered: Grinding and polishing challenges of calcium fluoride (CaF₂) Subsurface damage and edge chipping in brittle optical materials Limitations of cerium oxide in CaF₂ polishing Diamond and alumina polishing approaches for precision optics Achieving ultra-low surface roughness for UV and IR applications Process optimization from pre-polish to final finish This webinar is intended for optical manufacturers, process engineers, and researchers working with demanding optical materials and high surface quality requirements.