Bi-Convex Lens, N-BK7, 6.35 mm Diameter, 6.4 mm EFL, Uncoated

Model: KBX010

$44

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Product Series Overview

Uncoated N-BK7 Bi-Convex Lenses

The KBX010 N-BK7 Bi-Convex Lens is an uncoated, 1/4 inch (6.35 mm) diameter, N-BK7 bi-convex lens with an effective focal length of 6.4 mm. It is designed to meet the demanding requirements of laser electro-optic applications. Newport's N-BK7 precision bi-convex lenses are manufactured from fine annealed optical glass and are polished to tight tolerances using master test plates to ensure minimum wavefront distortion.

Specifications

Technical Specs

Lens Shape
Bi-Convex
Diameter
6.35 mm
Lens Material
N-BK7
Antireflection Coating
Uncoated
Surface Quality
40-20 scratch-dig
Surface Accuracy, Irregularity
λ/4
Surface Accuracy, Power
1.5 λ
F/#
1
Effective Focal Length (EFL)
6.4 mm
Back Focal Length (BFL)
4.47 mm
Radius of Curvature (R)
5.619 mm
Edge Thickness (Te)
3.0 mm
Center Thickness (Tc)
4.960 mm

Principal Plane 1 (P1)
1.92 mm
Principal Plane 2 (P2)
-1.92 mm
Design Wavelength
589 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
Bi-Convex
Diameter
6.35 mm
Lens Material
N-BK7
Antireflection Coating
Uncoated
Surface Quality
40-20 scratch-dig
Surface Accuracy, Irregularity
λ/4
Surface Accuracy, Power
1.5 λ
F/#
1
Effective Focal Length (EFL)
6.4 mm
Back Focal Length (BFL)
4.47 mm
Radius of Curvature (R)
5.619 mm
Edge Thickness (Te)
3.0 mm
Center Thickness (Tc)
4.960 mm

Principal Plane 1 (P1)
1.92 mm
Principal Plane 2 (P2)
-1.92 mm
Design Wavelength
589 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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