Standard, low aberration 1:1 imaging lens for most routine applications; 415nm to 1064nm. Well-suited to a wide range of finite imaging tasks in the visible and near-infrared, these N-BK7 equi-convex lenses minimize aberrations when used at 1:1 conjugate ratio. They are available in a selection of standard focal lengths and diameters, with optional broadband VIS & NIR AR coatings.
Product Code: LDX-C
Optical Material: N-BK7
Diameter Tolerance: ±0/-0.10mm
Center Thickness Tolerance (tc): ± 0.2mm
Chamfer: 0.25 - 0.50mm at 45° nominal
Centration: ≤ 3 arc minutes
Paraxial Focal Length: ƒ±2% (±4% for LDX-5.0-4.3-C)
Surface Irregularity: < λ/2 p-v at 633nm before coating (applies to any 25mm diameter within CA for Ø > 25mm)
Surface Quality: 60-40 scratch-dig per MIL-PRF-13830b
Clear Aperture (CA): ≥ 90% of central diameter
Design Wavelength: 546.1nm
Anti-reflection Coating: Wavelength user specified