Frequently Asked Questions

Single crystal calcium fluoride has no obvious crystal boundary line. It has higher production cost, better consistency and uniformity, and is suitable for complete sets of lenses, coated products, high power laser products, microscopes and cameras,etc. Polycrystalline calcium fluoride crystals are mainly used in protective windows, uncoated products, gas analysis sensing, thermal imaging or products with no requirement for imaging quality.

nfrared calcium fluoride crystals are mainly made of natural fluorite with low price and have obvious absorption at 205nm and 306nm. UV calcium fluoride crystals are mostly made of high purity chemical synthesis materials, which control cerium and lead absorption in crystal growth and have no absorption at 200-400nm. The trend of transmittance curve is more stable.

Because of the isotropic of calcium fluoride crystallsmaterials, there is generally no major difference in transmittance between polycrystalline and monocrystalline.

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