25mm Dia x -75mm FL VIS-NIR Coated, Illumination Grade PCV Cylinder Lens

Product Details Cylinder Lenses Ideal for 1 Dimensional Laser Beam Convergence Circular and Rectangular Form Factors Multiple Coating Options Available TECHSPEC Illumination Grade PCV Cylinder Lenses are commonly used to turn a collimated laser source into a line generator. These PCV Cylinder Lenses and TECHSPEC Illumination Grade PCX Cylinder Lenses can be used together for beam expander applications. The thin lens approximation for the length of a line generated by a negative cylinder lens is: L = 2 * (r 0 /f) * (z + f) where L is the line length, r 0 is half the beam diameter, z is the projection distance, and -f is the focal length of the lens. Specifications General Type: Cylinder Lens, Plano-Concave Physical & Mechanical Properties Diameter (mm): 25.00 +0.0/-0.2 Center Thickness CT (mm): 3.50 ±0.1 Edge Thickness ET (mm): 5.57 Optical Properties Effective Focal Length EFL (mm): -75.00 Back Focal Length BFL (mm): -77.31 Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More N-BK7 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: 60-40 Focal Length Tolerance (%): ±3 Radius R 1 (mm): -38.76 Numerical Aperture NA: 0.17 Damage Threshold, By Design: 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 ×