25.4mm Dia. x 75mm FL, Uncoated, ZnSe Plano-Convex Lens

Product Details Edmund Optics Designed, Coherent Manufactured Premier Grade ZnSe Material Uncoated or Broadband AR Coating Options TECHSPEC Zinc Selenide (ZnSe) Plano-Convex (PCX) Lenses are designed for focusing or collimation applications in the mid-wave and longwave infrared spectrum. Manufactured by Coherent, these lenses feature Infrared ZnSe material with <0.0005cm -1 bulk absorption at 10.6µm and are available uncoated or with a variety of broadband anti-reflection coating options. The 8-12µm coating is ideal for use with CO 2 lasers and thermal camera applications, whereas the dual band 3-12µm coating is ideal for hyperspectral applications. TECHSPEC Zinc Selenide PCX Lenses feature an irregularity of <λ/20 at 10.6µm, 40-20 surface quality, and <50Å surface roughness. Three diameter options are available, with effective focal lengths ranging from 12.7mm to 250mm. Notes: II-VI Incorporated is now Coherent Corp. 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 Physical & Mechanical Properties Diameter (mm): 25.40 +0.00/-0.10 Center Thickness CT (mm): 2.50 ±0.10 Edge Thickness ET (mm): 1.73 Centering, ETD (μm): ≤12.7 Clear Aperture CA (mm): 22.86 Bevel: Protective as needed Surface Roughness (Å): <50 RMS Optical Properties Effective Focal Length EFL (mm): 75.00 @ 10.6µm Focal Length Specification Wavelength (nm): 10.6 Back Focal Length BFL (mm): 73.96 Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More Coherent Infrared ZnSe f/#: 2.95 Coating: Uncoated Wavelength Range (nm): 600 - 18000 Surface Quality: 40-20 Power (P-V) @ 632.8nm: λ Irregularity (P-V) @ 10.6μm: λ/20 Radius R 1 (mm): 105.20 Numerical Aperture NA: 0.17 Bulk Absorption Coefficient (cm 1 ): <0.0005 @ 10.6μm Electrical Power (P-V) @ 10.6μm: λ/10 Regulatory Compliance RoHS 2015: Compliant × Certificate of Conformance: View × Reach 242: Compliant ×