Plano-Convex Lens, N-BK7, 25.4 mm Diameter, 225 mm EFL, 430-700 nm

The KPX108AR.14 N-BK7 Precision Plano-Convex Lens is a 430 to 700 nm anti-reflection coated, 1 inch (25.4 mm) diameter, N-BK7 plano-convex lens with an effective focal length of 225 mm. It has = λ/4 surface irregularity, 40-20 scratch-dig, and is designed to meet the demanding requirements of laser electro-optic applications. It is manufactured from fine annealed optical glass and polished to tight tolerances using master test plates ensures minimum wavefront distortion. Tight surface quality tolerances minimize scatter and unwanted diffraction effects. 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
25.4 mm
Lens Material
N-BK7
Antireflection Coating
430-700 nm
Coating Type
Visible Multilayer
Coating Code
AR.14
Damage Threshold
7.5 J/cm², 10 ns pulses, 10 Hz at 532 nm
Surface Quality
40-20 scratch-dig
Surface Accuracy, Irregularity
λ/4
Surface Accuracy, Power
1.5 λ
F/#
8.8
Effective Focal Length (EFL)
225 mm
Back Focal Length (BFL)
222.57 mm
Radius of Curvature (R)
116.712 mm

Edge Thickness (Te)
3.0 mm
Center Thickness (Tc)
3.693 mm
Principal Plane 2 (P2)
-2.43 mm
Design Wavelength
546.1 nm
Centration
≤3 arc min
Chamfers
0–0.8 mm face width
Chamfers Angle/Tolerance
45° ±15°, typical
Focal Length Tolerance
±1 %
Diameter Tolerance
+0/-0.1 mm
Center Thickness Tolerance
±0.1 mm
Clear Aperture
≥central 90% of diameter
Cleaning
See How to Clean Optics

Lens Shape
Plano-Convex
Diameter
25.4 mm
Lens Material
N-BK7
Antireflection Coating
430-700 nm
Coating Type
Visible Multilayer
Coating Code
AR.14
Damage Threshold
7.5 J/cm², 10 ns pulses, 10 Hz at 532 nm
Surface Quality
40-20 scratch-dig
Surface Accuracy, Irregularity
λ/4
Surface Accuracy, Power
1.5 λ
F/#
8.8
Effective Focal Length (EFL)
225 mm
Back Focal Length (BFL)
222.57 mm
Radius of Curvature (R)
116.712 mm

Edge Thickness (Te)
3.0 mm
Center Thickness (Tc)
3.693 mm
Principal Plane 2 (P2)
-2.43 mm
Design Wavelength
546.1 nm
Centration
≤3 arc min
Chamfers
0–0.8 mm face width
Chamfers Angle/Tolerance
45° ±15°, typical
Focal Length Tolerance
±1 %
Diameter Tolerance
+0/-0.1 mm
Center Thickness Tolerance
±0.1 mm
Clear Aperture
≥central 90% of diameter
Cleaning
See How to Clean Optics

Resources & Downloads

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