38.1mm Dia. x 50.8mm FL, Uncoated, ISP Optics Calcium Fluoride (CaF 2 ) DCX Lens | CF-BX-38-50

Product Details Greater than 90% Transmission from 350nm-7μm Low Index of Refraction High Laser Damage Threshold ISP Optics Calcium Fluoride Double-Convex (DCX) Lenses are ideal for finite imaging applications requiring high transmission in the infrared wavelength spectrum. Calcium Fluoride features greater than 90% transmission from 350nm to 7μm and a low refractive index, allowing it to be used without an antireflective coating. In addition, its low absorption and high damage threshold makes it a popular choice for use with excimer lasers. ISP Optics Calcium Fluoride Double-Convex (DCX) Lenses offer low solubility and superior hardness compared to other fluoride-based substrates, allowing for use in harsh environments. Specifications General Type: Double-Convex Lens Model Number: CF-BX-38-50 Physical & Mechanical Properties Diameter (mm): 38.10 +0.00/-0.13 Center Thickness CT (mm): 12.50 ±0.20 Edge Thickness ET (mm): 2.50 Centering (arcmin): <3 Clear Aperture CA (mm): 34.29 Bevel: Protective as needed Optical Properties Effective Focal Length EFL (mm): 50.80 @ 5μm Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More Calcium Fluoride (CaF 2 ) f/#: 1.33 Coating: Uncoated Wavelength Range (nm): 300 - 8000 Surface Quality: 60-40 Irregularity (P-V) @ 632.8nm: λ Focal Length Tolerance (%): ±2 Radius R 1 (mm): 38.64 Radius R 2 (mm): 38.64 Numerical Aperture NA: 0.38 Regulatory Compliance RoHS 2015: Compliant × Certificate of Conformance: View × Reach 240: Compliant ×