25.0mm Dia. x -75 FL, VIS-NIR, UV Plano-Concave Lens

Product Details Negative Focal Lengths for Beam Expansion or Light Projection Applications Wavelength Range of 200 – 2200nm Popular UV-AR Coating Option Available TECHSPEC UV Fused Silica Plano-Concave (PCV) Lenses are high performance UV optic elements, manufactured utilizing state of the art CNC equipment. Zygo’s GPI-XP Interferometer is used to assure the surface accuracy and performance of these UV optics. UV Grade lenses are precision manufactured using research-grade synthetic fused silica. In addition to providing excellent transmission characteristics and higher operating temperatures, synthetic fused silica also exhibits an exceptional inclusion specification and chemical purity. TECHSPEC UV Fused Silica Plano-Concave (PCV) Lenses are an ideal choice for many laser and imaging applications, particularly those involving ultraviolet wavelengths. A broadband anti-reflection coating is available for optimized throughput in the ultraviolet spectrum. Specifications General Type: Plano-Concave Lens Note: Max. Flat Annulus is 0.3mm Physical & Mechanical Properties Diameter (mm): 25.00 +0.0/-0.025 Center Thickness CT (mm): 2.50 ±0.10 Edge Thickness ET (mm): 4.74 Centering (arcmin): <1 Clear Aperture CA (mm): 24 Optical Properties Effective Focal Length EFL (mm): -75.00 Focal Length Specification Wavelength (nm): 587.6 Back Focal Length BFL (mm): -76.71 Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More Fused Silica (Corning 7980) f/#: 3.00 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 (mm): -34.38 Numerical Aperture NA: 0.17 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 235: Compliant ×