25.4mm Dia. x 250mm FL, Uncoated, ISP Optics Barium Fluoride (BaF 2 ) PCX Lens | BF-PX-25-250

Product Details Excellent Transmission from 0.2 – 12μm Provides High Transmission without AR Coatings 25 – 500mm Focal Lengths Available ISP Optics Barium Fluoride (BaF 2 ) Plano-Convex (PCX) Lenses are ideal for collecting and focusing light in ultraviolet, visible, and infrared applications. Barium Fluoride has similar physical properties to Calcium Fluoride, but provides a higher resistance to high-energy radiation. However, it is less resistant to water and prolonged exposure to moisture can degrade transmission in the ultraviolet range. ISP Optics Barium Fluoride (BaF 2 ) Plano-Convex (PCX) Lenses feature a low index of refraction that enables excellent transmission from 0.2- 12μm without the need for Anti-Reflection (AR) coatings. These lenses are available in standard imperial sizes with focal length options from 25 – 500mm. Note: These lenses are very sensitive to thermal shock. Specifications General Type: Plano-Convex Lens Model Number: BF-PX-25-250 Physical & Mechanical Properties Diameter (mm): 25.40 +0.00/-0.13 Center Thickness CT (mm): 2.70 ±0.20 Edge Thickness ET (mm): 2.00 Centering (arcmin): <3 Clear Aperture CA (mm): 22.86 Bevel: Protective as needed Optical Properties Effective Focal Length EFL (mm): 250.00 @ 5µm Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More Barium Fluoride (BaF 2 ) f/#: 9.84 Coating: Uncoated Wavelength Range (nm): 200 - 12000 Surface Quality: 60-40 Irregularity (P-V) @ 632.8nm: λ Focal Length Tolerance (%): ±2 Radius R 1 (mm): 112.72 Numerical Aperture NA: 0.05 Regulatory Compliance RoHS 2015: Compliant × Certificate of Conformance: View × Reach 240: Compliant ×