25mm Dia 0.48 NA, UV-VIS, UV Fused Silica Aspheric Lens

Product Details Low Coefficient of Thermal Expansion Precision and High Precision Options High Numerical Apertures to Maximize Throughput TECHSPEC UV Fused Silica Aspheric Lenses offer the benefits of an aspheric element combined with the manufacturing precision of state-of-the-art grinding and polishing equipment. These fused silica optics can be easily designed and integrated into complex optical systems with the available prescription data. Featuring low f/#’s, which allow for a larger aperture and thus more light gathering and focusing performance, these fused silica lenses are computer-optimized to eliminate spherical and minimize higher order aberrations. TECHSPEC UV Fused Silica Aspheric Lenses offer a low coefficient of thermal expansion, making them ideal for applications in metrology, beam-focusing or collimating, and OEM integration. These lenses are available in a variety of coating options and are offered in sizes ranging from 10-50mm. Specifications General Type: Aspheric Lens Physical & Mechanical Properties Diameter (mm): 25.00 +0/-0.025 Center Thickness CT (mm): 12.00 ±0.1 Edge Thickness ET (mm): 4.7 Clear Aperture CA (mm): 22.5 Centering (arcmin): <1 Shape of Back Surface: Plano Bevel: Protective as needed Optical Properties Effective Focal Length EFL (mm): 25.00 @ 285nm Back Focal Length BFL (mm): 17.00 @ 285nm Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More Fused Silica (Corning 7980) f/#: 1 Numerical Aperture NA: 0.48 Coating: UV-VIS (250-700nm) Coating Specification: R avg <2.5% @ 250 - 700nm Wavelength Range (nm): 250 - 700 Design Wavelength DWL (nm): 285 Aspheric Design Wavelength (nm): 285 Surface Quality: 40-20 Asphere Figure Error, RMS @ 632.8nm: 0.4λ Conjugate Distance: Infinite Power (diopters): 40.00 Regulatory Compliance RoHS 2015: Compliant × Certificate of Conformance: View × Reach 235: Compliant ×