12mm Dia. x 12mm FL, VIS-NIR Coated, UV Double-Convex Lens

Product Details Ideal for Imaging Applications Minimize Aberrations Including Spherical and Coma Precision Fused Silica Substrate TECHSPEC UV Fused Silica Double-Convex (DCX) Lenses, also referred to as bi-convex lenses, have two positive, symmetrical faces with equal radii on both sides. These lenses are generally recommended for finite imaging applications with a conjugate ratio (ratio between object distance and image distance) between 0.2 and 5. At a conjugate ratio of 1, aberrations such as spherical aberration, chromatic aberration, coma, and distortion are minimized or canceled due to the symmetric lens design. TECHSPEC UV Fused Silica Double-Convex (DCX) Lenses have a precision fused silica substrate. These lenses are available uncoated or with UV-AR, UV-VIS, VIS-EXT, VIS-NIR, VIS 0°, NIR I, or NIR II coatings. Specifications General Type: Double-Convex Lens Physical & Mechanical Properties Diameter (mm): 12.00 +0.0/-0.025 Center Thickness CT (mm): 7.09 ±0.05 Edge Thickness ET (mm): 2.96 Centering (arcmin): <1 Clear Aperture CA (mm): 11.00 Bevel: Protective as needed Optical Properties Effective Focal Length EFL (mm): 12.00 Focal Length Specification Wavelength (nm): 587.6 Back Focal Length BFL (mm): 9.25 Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More Fused Silica (Corning 7980) f/#: 1.00 Coating: VIS-NIR (400-1000nm) Coating Specification: R abs ≤0.25% @ 880nm R avg ≤1.25% @ 400 - 870nm R avg ≤1.25% @ 890 - 1000nm Wavelength Range (nm): 400 - 1000 Surface Quality: 40-20 Power (P-V) @ 632.8nm: 1.5λ Irregularity (P-V) @ 632.8nm: λ/4 Focal Length Tolerance (%): ±1 Radius R 1 =-R 2 (mm): 9.74 Numerical Aperture NA: 0.50 Damage Threshold, Reference: Damage threshold for optical components varies by substrate material and coating. Click here to learn more about this specification. 5 J/cm 2 @ 532nm, 10ns Regulatory Compliance RoHS 2015: Compliant × Certificate of Conformance: View × REACH 241: Compliant ×