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67-437 2.5mm Dia. x 4.0mm FL; NIR II Coated; Plano-Convex Lens NIR II 750-1550nm

67-437 2.5mm Dia. x 4.0mm FL; NIR II Coated; Plano-Convex Lens NIR II 750-1550nm

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

Properties

Shape
Circular
Diameter
2.5 mm
EFL
4 mm
BFL
3.57 mm
R1
3.4 mm

Material

Name
N-LASF9
Dispersion Equation
Sellmeier
n (λ)
1.8502442055719617
λ
587.6 nm
B1
2.00029547
C1
0.0121426017 μm2
B2
0.298926886
C2
0.0538736236 μm2
B3
1.80691843
C3
156.530829 μm2

67-437 2.5mm Dia. x 4.0mm FL; NIR II Coated; Plano-Convex Lens NIR II 750-1550nm

The 67-437 is a Plano-Convex lens, a type of spherical lens, sourced from Edmund Optics. This lens boasts a 2.5mm diameter and a 4.0mm focal length, making it suitable for a wide range of applications. The lens is fabricated from n-lasf9 Schott, a material known for its excellent optical properties.

The lens features a plano-convex geometry, meaning one side is flat while the other is curved. The curvature of the lens is defined by a radius of 3.4mm, and the lens has a central thickness of 0.8mm and an edge thickness of 0.56mm. The effective focal length (EFL) of the lens is 4mm, and the back focal length (BFL) is 3.57mm.

The 67-437 lens is coated with Edmund Optics' standard NIR-II coating on both the front and back surfaces. This coating is specifically designed for the near-infrared (NIR) spectrum, covering the wavelength range of 750-1550nm. This coating enhances the lens' performance in the NIR region, making it ideal for applications such as night vision, thermal imaging, and spectral analysis.

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