38.1mm Dia. x 75mm FL, Uncoated, ISP Optics Zinc Selenide (ZnSe) PCX Lens

Product Details Low Dispersion and Absorption from 0.6 – 18µm High Resistance to Thermal Shock Uncoated or BBAR Coated for 8 – 12µm ISP Optics Zinc Selenide (ZnSe) Plano-Convex (PCX) Lenses are ideal for focusing or collimation of light in the Mid-Wave Infrared (MWIR) and Long-Wave Infrared (LWIR) spectrum. Featuring low absorption and high resistance to thermal shock, ZnSe is widely used in high power CO 2 laser systems. ZnSe is not recommended for harsh environments as it is a relatively soft material that scratches easily, and only has a Knoop Hardness of 120. ISP Optics Zinc Selenide (ZnSe) Plano-Convex (PCX) Lenses are available either uncoated or Broadband Anti-Reflection (BBAR) coated for increased transmission from 8-12µm. Note: Special care should be taken when handling Zinc Selenide as it is a toxic material. Always wear rubber or plastic gloves to avoid risk of contamination. Specifications General Type: Plano-Convex Lens Model Number: ZC-PX-38-76 Physical & Mechanical Properties Diameter (mm): 38.10 +0.00/-0.13 Center Thickness CT (mm): 3.70 ±0.20 Edge Thickness ET (mm): 2.00 Centering (arcmin): <3 Clear Aperture CA (mm): 34.29 Bevel: Protective as needed Optical Properties Effective Focal Length EFL (mm): 75.00 @ 10.6µm Back Focal Length BFL (mm): 74.14 Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More Zinc Selenide (ZnSe), CVD Grade f/#: 2.00 Coating: Uncoated Wavelength Range (nm): 600 - 18000 Surface Quality: 60-40 Irregularity (P-V) @ 10.6μm: λ/20 Focal Length Tolerance (%): ±2 Radius R 1 (mm): 106.15 Numerical Aperture NA: 0.25 Regulatory Compliance RoHS 2015: Compliant × Certificate of Conformance: View × Reach 240: Compliant ×