Bi-Convex Lens, N-BK7, 25.4 mm Diameter, 125 mm EFL, Uncoated

The KBX067 N-BK7 Bi-Convex Lens is an uncoated, 1 inch (25.4 mm) diameter, N-BK7 bi-convex lens with an effective focal length of 125 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
25.4 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/#
4.9
Effective Focal Length (EFL)
125 mm
Back Focal Length (BFL)
123.58 mm
Radius of Curvature (R)
128.476 mm
Edge Thickness (Te)
3.0 mm
Center Thickness (Tc)
4.258 mm

Principal Plane 1 (P1)
1.41 mm
Principal Plane 2 (P2)
-1.41 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
25.4 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/#
4.9
Effective Focal Length (EFL)
125 mm
Back Focal Length (BFL)
123.58 mm
Radius of Curvature (R)
128.476 mm
Edge Thickness (Te)
3.0 mm
Center Thickness (Tc)
4.258 mm

Principal Plane 1 (P1)
1.41 mm
Principal Plane 2 (P2)
-1.41 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

Related Products

Similar

Description	Compatibility	Price
KBX067AR.16Bi-Convex Lens, N-BK7, 25.4 mm Diameter, 125 mm EFL, 650-1000nm	UNIVERSAL	$66
KPX097Plano-Convex Lens, N-BK7, 25.4 mm Diameter, 125 mm EFL, Uncoated	UNIVERSAL	$36
SPX023Plano-Convex Lens, Fused Silica, 25.4 mm, 125 mm EFL, Uncoated	UNIVERSAL	$123
KBX067AR.14Bi-Convex Lens, N-BK7, 25.4 mm Diameter, 125 mm EFL, 430-700nm	UNIVERSAL	$55

Compatible

Description	Compatibility	Price
LCM-1Lens Mount, Self-Centering, 0.125-1.063 in. Diameter Lenses	IMPERIAL	$282
VLH-1AV-Groove Lens Holder, 0.25 to 1.25 in. Diameter Lenses	UNIVERSAL	$161
AC-1AVariable Size Lens Mount, 5.0-46.2 mm, Thumbscrew Support Arms	UNIVERSAL	$58
LP-1APrecision Lens Positioner, 1.0 in., 100 TPI XYθXθY, 80 TPI Z	UNIVERSAL	$1,023
LH-1AFixed Lens Mount, 1.0 in. (25.4 mm) Diameter, 8-32 Thread, A-LINE	IMPERIAL	$20
LT10-20Lens Tube, 1 inch LT Series, 2 inch length	UNIVERSAL	$24