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
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.