Knight Optical光学材料，CaF2棱镜，CaF2透镜

氟化钙（CaF₂) 通常用于利用IR或UV辐射的光学器件。它的折射率相对于波长的变化非常小。氟化钙具有低吸收和高损伤阈值，并且由于其具有低折射率，通常不需要抗反射涂层。它在0.15-9µm之间的传输率大于75%，有效传输率高达约8µm，传输率超过90%。

Material: Calcium Fluoride Dimensions: +/-0.2 (Spectroscopic type ± 2mm) Diameter: +0, -0.2mm (Raman type ±0.1mm) Thickness: ±0.2 Surface Flatness @ 633nm: <2λ over 90% CA Surface Quality (S/D): <60/40 Parallelism: <5’ LENSES Diameter: 3mm to 100mm+ PRISMS Lengths/Widths: 3mm to 50mm+ WINDOWS Diameter: 5mm to 200mm+ AR Coatings are available on all LFL1212 Biconvex 12.7 12.7 12.00 12.0 6.00 1.5 LFL1213 Biconvex (UV Grade) 12.7 12.7 12.00 12.0 6.00 1.5 LFL2525 Biconvex 25.4 25 20.80 20.8 9.83 1.5 LFL2550 Planoconvex 50 25 20.90 Plano 6.10 2.0 LFL2553 Planoconvex (UV Grade) 50 25 22.96 Plano 5.70 2.0 LFL2552 Biconvex 50 25 39.10 39.1 6.10 2.0 LFL2575 Planoconvex 75 25 31.35 Plano 4.60 2.0 LFL3875 Planoconvex 75 38.1 33.84 Plano 8.87 3.0 LFL2510 Planoconvex 100 25 43.73 Plano 3.80 2.0 LFL2513 Planoconvex 130 25 55.35 Plano 3.00 1.5 LFL2515 Planoconvex 150 25 61.00 Plano 3.30 2.0 LFL2516 Planoconvex (UV Grade) 150 25 61.00 Plano 3.30 2.0 LFL2520 Planoconvex (UV Grade) 200 25 9.39 Plano 2.87 2.0 LFL2530 Planoconvex 300 25 120.00 Plano 2.60 2.0 LFL2551 Planoconvex 500 25 202.02 Plano 2.38 2.0