Calcium fluoride crystal is an inorganic compound with the chemical formula CaF ₂. It is an ionic crystal composed of calcium ions (Ca ²+) and fluoride ions (F ⁻). These ions form a face centered cubic structure in a specific arrangement within the crystal, where calcium ions occupy the corners and centers of the cube, while fluorine ions fill the octahedral voids formed by calcium ions.
Calcium fluoride crystals belong to the equiaxed crystal system and have a high degree of symmetry. Its crystal structure is stable, with high transmittance, excellent water resistance, heat resistance, and chemical stability. Due to these characteristics, calcium fluoride crystals are widely used in the production of lenses, prisms, and reflectors in various advanced optical instruments, as well as in dark field imaging systems. In addition, calcium fluoride crystals also have high UV transmittance and refractive index, as well as high anti laser loss threshold and low birefringence uniformity, making them an irreplaceable lens material for UV lithography objective systems.
The above is an answer to what kind of crystal calcium fluoride is. We hope it is helpful to you. If you have any questions, please feel free to consult or leave a message online.
