Bi-Concave Lens, N-BK7, 6.35 mm Diameter, -12.5 mm EFL, Uncoated

The KBC010 Bi-Concave Lens is an uncoated 6.35 mm diameter N-BK7 Bi-concave lens with an effective focal length of -12.7 mm. It is designed to meet the demanding requirements of laser electro-optic applications. Newport's N-BK7 precision bi-concave 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-Concave
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/#
-1.9
Effective Focal Length (EFL)
-12.5 mm
Back Focal Length (BFL)
-13.29 mm
Radius of Curvature (R)
-13.333 mm
Edge Thickness (Te)
3.12 mm
Center Thickness (Tc)
2.5 mm

Principal Plane 1 (P1)
0.79 mm
Principal Plane 2 (P2)
-0.79 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-Concave
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/#
-1.9
Effective Focal Length (EFL)
-12.5 mm
Back Focal Length (BFL)
-13.29 mm
Radius of Curvature (R)
-13.333 mm
Edge Thickness (Te)
3.12 mm
Center Thickness (Tc)
2.5 mm

Principal Plane 1 (P1)
0.79 mm
Principal Plane 2 (P2)
-0.79 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

Compatible

Description	Compatibility	Price
LCM-1Lens Mount, Self-Centering, 0.125-1.063 in. Diameter Lenses	IMPERIAL	$282
AC-1AVariable Size Lens Mount, 5.0-46.2 mm, Thumbscrew Support Arms	UNIVERSAL	$58
VLH-1AV-Groove Lens Holder, 0.25 to 1.25 in. Diameter Lenses	UNIVERSAL	$161
LPLH-25TOptic Holder, 0.25 in. Diameter, 0.875-20 Thread, For LP-05A Series	UNIVERSAL	$43
LH-50R25Lens Adaptor, 0.5 in. Mount to 0.25 in. Diameter Lens, A-LINE	UNIVERSAL	$23
LH1-0.25ROptic Holder Cell, 0.25 in. Diameter Optics, Requires LM1-R Mount	UNIVERSAL	$36
9872-KOpti-Claw Mount, Tilting, Tiny, 0.06-0.63 in., 3 Allen-Key Adjustment	UNIVERSAL	$342