Cylindrical Lens, Plano-Concave, N-BK7, 25.4x6.35mm, -6.4mm FL, Uncoated
The CKV006 Plano-Concave Cylindrical Lens is an uncoated, 1 inch (25.4 mm) length by 1/4 inch (6.35 mm) width, N-BK7 plano-concave cylindrical 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 cylindrical lenses are manufactured from fine annealed optical glass and are polished to tight tolerances to ensure minimum wavefront distortion. Specifications
Lens Type
Cylindrical
Lens Shape
Plano-Concave
Size
25.4 x 6.35 mm
Center Thickness (T<sub>c</sub>)
6.0 mm
Edge Thickness (T<sub>e</sub>)
7.36 mm
Lens Material
Grade A N-BK7
Antireflection Coating
Uncoated
Surface Quality
40-20 scratch-dig
Surface Flatness
λ/2-λ/4
Surface Accuracy, Irregularity, X Axis
≤λ/4 per cm
Surface Accuracy, Irregularity, Y Axis
≤λ/2
Effective Focal Length (EFL)
-6.4 mm
Back Focal Length (BFL)
-10.96 mm
Thickness
6.0 mm
Centration
<3 arc min
Principal Plane 2 (P<sub>2</sub>)
-3.96 mm
Radius of Curvature (R)
-3.310 mm
Size Tolerance
±0.1 mm
Focal Length Tolerance
± 2.0%
Center Thickness Tolerance
+0.5/-0.25 mm
Edge Thickness Tolerance
±0.3 mm
Wedge
<1 mrad in X axis
Clear Aperture
≥central 80% of dimensions
Chamfers
0.5 mm face width
Chamfers Angle/Tolerance
45°, typical
f/Y
-1
Cleaning
Lens Type
Cylindrical
Lens Shape
Plano-Concave
Size
25.4 x 6.35 mm
Center Thickness (T<sub>c</sub>)
6.0 mm
Edge Thickness (T<sub>e</sub>)
7.36 mm
Lens Material
Grade A N-BK7
Antireflection Coating
Uncoated
Surface Quality
40-20 scratch-dig
Surface Flatness
λ/2-λ/4
Surface Accuracy, Irregularity, X Axis
≤λ/4 per cm
Surface Accuracy, Irregularity, Y Axis
≤λ/2
Effective Focal Length (EFL)
-6.4 mm
Back Focal Length (BFL)
-10.96 mm
Thickness
6.0 mm
Centration
<3 arc min
Principal Plane 2 (P<sub>2</sub>)
-3.96 mm
Radius of Curvature (R)
-3.310 mm
Size Tolerance
±0.1 mm
Focal Length Tolerance
± 2.0%
Center Thickness Tolerance
+0.5/-0.25 mm
Edge Thickness Tolerance
±0.3 mm
Wedge
<1 mrad in X axis
Clear Aperture
≥central 80% of dimensions
Chamfers
0.5 mm face width
Chamfers Angle/Tolerance
45°, typical
f/Y
-1
Cleaning
