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67-591 3mm Dia. x 4.5mm FL; NIR II Coated; Double-Convex Lens NIR II 750-1550nm

67-591 3mm Dia. x 4.5mm FL; NIR II Coated; Double-Convex Lens NIR II 750-1550nm

Type
Lens
Subtype
Spherical Lens (Convex-Convex)
Brand
Edmund Optics
Product webpage
Edmund Optics products in the 3DOptix catalog

Properties

Shape
Circular
Diameter
3 mm
EFL
4.5 mm
BFL
3.78 mm
R1
4.29 mm
R2
-4.29 mm

Material

Name
N-BK7
Dispersion Equation
Sellmeier
n (λ)
1.5167984379050088
λ
587.6 nm
B1
1.03961212
C1
0.00600069867 μm2
B2
0.231792344
C2
0.0200179144 μm2
B3
1.01046945
C3
103.560653 μm2

67-591 3mm Dia. x 4.5mm FL; NIR II Coated; Double-Convex Lens NIR II 750-1550nm

The 67-591 is a high-quality double-convex lens, boasting a 3mm diameter and a focal length of 4.5mm, making it an ideal choice for near-infrared (NIR) applications. This lens is sourced from the reputable vendor, Edmund Optics, and is currently in stock, ensuring quick delivery for your project needs.

The lens is crafted from n-BK7 Schott, a popular optical glass due to its excellent transparency in the visible and near-infrared regions. The base shape is circular, and the lens features a double-convex geometry, with a 1.47mm thickness at the edge and a 2mm thickness at the center. The effective focal length (EFL) is 4.5mm, and the radii of curvature are 4.29mm for the first surface and -4.29mm for the second surface. The back focal length (BFL) is 3.78mm.

The 67-591 lens is coated with Edmund Optics' NIR-II standard curve coating on both the front and back surfaces. This coating enhances the lens' performance in the NIR region, specifically between 750nm and 1550nm, making it suitable for a wide range of NIR applications.

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