Plano-Convex Lens, N-BK7, 20.0 mm Diameter, 50 mm EFL, 400-700 nm

MgF2 Visible N-BK7 Plano-Convex Lenses

The KPX382-C N-BK7 Plano-Convex Lens is a 400-700 nm anti-reflection coated, 20.0 mm diameter N-BK7 plano-convex lens with an effective focal length of 50 mm. It has = λ/2 surface irregularity, 60-40 scratch-dig. N-BK7 is an excellent material for most visible and near infrared applications. It is the most common optical glass, and it provides great performance at a good value.

Specifications

Technical Specs

Lens Shape
Plano-Convex
Diameter
20.0 mm
Lens Material
N-BK7
Antireflection Coating
400-700 nm
Coating Type
Visible Single-Layer MgF₂
Coating Code
-C
Damage Threshold
7 J/cm², 10 ns pulses, 20 Hz at 532 nm
Surface Quality
60-40 scratch-dig
F/#
2.5
Effective Focal Length (EFL)
50.0 mm

Back Focal Length (BFL)
47.40 mm
Radius of Curvature (R)
25.936 mm
Edge Thickness (T<sub>e</sub>)
2.0 mm
Center Thickness (T<sub>c</sub>)
4.00 mm
Principal Plane 2 (P<sub>2</sub>)
-2.60 mm
Centration
≤3 arc min
Clear Aperture
≥central 90% of diameter
Cleaning
See How to Clean Optics

Lens Shape
Plano-Convex
Diameter
20.0 mm
Lens Material
N-BK7
Antireflection Coating
400-700 nm
Coating Type
Visible Single-Layer MgF₂
Coating Code
-C
Damage Threshold
7 J/cm², 10 ns pulses, 20 Hz at 532 nm
Surface Quality
60-40 scratch-dig
F/#
2.5
Effective Focal Length (EFL)
50.0 mm

Back Focal Length (BFL)
47.40 mm
Radius of Curvature (R)
25.936 mm
Edge Thickness (T<sub>e</sub>)
2.0 mm
Center Thickness (T<sub>c</sub>)
4.00 mm
Principal Plane 2 (P<sub>2</sub>)
-2.60 mm
Centration
≤3 arc min
Clear Aperture
≥central 90% of diameter
Cleaning
See How to Clean Optics

Resources & Downloads

Other

KPX382-C RoHS Certificate(265.3 kB, PDF)
MgF₂ Raw Data.xlsx(63.2 kB, XLSX)