Achromatic Doublet Lens, Visible, 50.8 mm, 300 mm EFL, 430-700 nm

The PAC089AR.14 Visible Achromatic Doublet Lens is a 430 to 700 nm antireflection coated, 2 inch (50.8 mm) diameter, N-BK7 and N-SF5 precision achromatic doublet lens with an effective focal length of 300 mm. This achromat is computer designed to effectively minimize spherical aberration and coma when operating at infinite conjugate ratio, yielding smaller focused spot sizes. Unlike singlet lenses, this results in a constant focal length independent of aperture and far better off-axis performance. Achromats are superior to singlet lenses for monochromatic applications at any visible wavelength.
Specifications
- Lens TypeAchromatic Doublet
- Lens ShapePlano-Convex
- Diameter50.8 mm
- Antireflection Coating430-700 nm
- Coating TypeVisible Multilayer
- Coating CodeAR.14
- Damage Threshold1.0 J/cm2 @ 1064 nm, 10 ns , 10 Hz
- TransmissionT>97%
- Lens MaterialN-BK7/N-SF5
- Surface Quality40-20 scratch-dig
- λ/4
- 1.5 λ
- Effective Focal Length (EFL)300 mm
- Back Focal Length (BFL)292.9 mm
- F/#5.9
- Radius of Curvature (R)170.317 mm
- Radius 2-141.605 mm
- Radius 3-475.988 mm
- Edge Thickness (T<sub>e</sub>)11.4 mm
- Center Thickness (T<sub>c</sub>)14.0 mm
- Thickness, Center 19.0 mm
- Thickness, Center 25.0 mm
- OrientationSteepest convex surface should face the infinite conjugate
- Design Wavelengths589 nm
- Centration≤3 arc min
- Diameter Tolerance+0/-0.1 mm
- Focal Length Tolerance±2.0%
- Center Thickness Tolerance±0.4 mm
- Clear Aperture90% of central diameter
- Cleaning

Resources & Downloads
3D Product Models
Other
PAC089AR.14 RoHS Certificate(265.7 kB, PDF) PAC089AR.14_ROHS2-2021.pdf(280.8 kB, PDF) AR.14 Raw Data.xlsx(63.9 kB, XLSX)
PAC Series Drawing(164.8 kB, PDF)
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