6.25mm Dia. x 50mm FL, YAG-BBAR Coated, Achromatic Lens

Product Details Optimized for <0.25% Absolute Reflectivity at 532nm and 1064nm Excellent Broadband Transmission from 500 - 1100nm Low Cost Alternative to Air-Spaced Focusing Doublets TECHSPEC YAG-BBAR Coated Achromatic Lenses consist of two optical components cemented together to form a doublet that is ideal for correcting on-axis spherical and chromatic aberrations. These achromats feature a broadband anti-reflective coating with superior transmission from 500 - 1100nm, and are optimized for less than 0.25% absolute reflectivity at 532 and 1064nm. Our TECHSPEC YAG-BBAR Coated Achromatic Lenses are specifically designed to minimize the spot size for polychromatic illumination within the recommended usable wavelength range, but may also be used for focusing Nd:YAG lasers, especially those with an alignment beam. Specifications General Type: Achromatic Lens Physical & Mechanical Properties Diameter (mm): 6.25 +0.000/-0.025 Center Thickness CT (mm): 3.00 ±0.10 Center Thickness CT 1 (mm): 2.00 ±0.05 Center Thickness CT 2 (mm): 1.00 ±0.05 Edge Thickness ET (mm): 2.77 Clear Aperture CA (mm): 5.25 Centering (arcmin): <1 Bevel: Protective as needed Optical Properties Effective Focal Length EFL (mm): 50.00 Focal Length Tolerance (%): ±1 Focal Length Specification Wavelength (nm): 587.6 Back Focal Length BFL (mm): 48.61 Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More N-BK7 / N-SF5 f/#: 8.00 Numerical Aperture NA: 0.06 Coating: YAG-BBAR (500-1100nm) Coating Specification: R abs <0.25% @ 532nm R abs <0.25% @ 1064nm R avg <1.0% @ 500 - 1100nm Wavelength Range (nm): 500 - 1100 Radius R 1 (mm): 30.77 Radius R 2 (mm): 22.05 Radius R 3 (mm): 64.6 Surface Quality: 40-20 Power (P-V) @ 632.8nm: 1.5λ Irregularity (P-V) @ 632.8nm: λ/4 Regulatory Compliance RoHS 2015: Compliant × Reach 219: Compliant × Certificate of Conformance: View ×