67-491-INK 10.0mm Dia. x 75.0mm FL; NIR II; Inked; Plano-Convex Lens NIR II 750-1550nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 10 mm
- EFL
- 50 mm
- BFL
- 48.02 mm
- R1
- 25.84 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
67-491-INK 10.0mm Dia. x 75.0mm FL; NIR II; Inked; Plano-Convex Lens NIR II 750-1550nm
The 67-491-INK is a Plano-Convex lens, a type of spherical lens, sourced from Edmund Optics. This lens boasts a diameter of 10.0mm and a focal length of 50.0mm, making it suitable for a wide range of applications. The lens is made from N-BK7 Schott, a popular optical glass due to its excellent transparency in the visible and near-infrared regions.
The lens features a plano-convex geometry, meaning one side is flat (plano) and the other side is curved (convex). The radius of curvature of the curved surface is 25.84mm, and the lens has an edge thickness of 2.51mm and a center thickness of 3.0mm. The back focal length (BFL) is 48.02mm, and the effective focal length (EFL) is 50mm.
The 67-491-INK lens is coated with Edmund Optics' NIR-II standard curve coating on both the front and back surfaces. This coating enhances its performance in the near-infrared region, specifically between 750nm and 1550nm, making it ideal for applications such as night vision, thermal imaging, and spectroscopy.
Please note that the lens is inked, which is a common practice in the optical industry to mark lenses for identification and tracking purposes. This does not affect the lens's optical performance.
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