Plano-concave lens element GCL-L03 series

fused silicavisibleNIR

GCL-L03 series laser grade plano-concave lenses are designed for high energy laser applications. The lenses made of high-quality fused silica material, respectively coated with visible light multilayer anti-reflection coating (450-800nm) and near-infrared multilayer anti-reflection coating (800-1100nm). The product has a high damage threshold (7.5J/cm2). Fused silica glass has better uniformity and lower thermal expansion coefficient than BK7 glass, and has superior imaging and damage resistance properties in the ultraviolet to near-infrared region. • Focal Length (f'): ±1%@587.6nm • Diameter(φ) Tolerance: -0.05/-0.20 • Center Thickness (Tc): ±0.1 • Centration: 3 arc min • Form Error: 1 ～ 2 fringes • Irregularity of Fringes: 0.2 ～ 0.5 fringes • Surface Quality: 60-40 scratch-dig • Coating: GCL-03xxxA: VIS Multiple Layers AR coating, Rave≤0.5%@450-800nm GCL-03xxxB: NIR Multiple Layers AR coating, Rave≤0.5%@800-1100nm Laser Damage Threshold: 7.5J/cm2 • Clear Aperture: 90% diameter