67-629 15mm Dia. x 15mm FL; NIR II Coated; Double-Convex Lens NIR II 750-1550nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 15 mm
- EFL
- 15 mm
- BFL
- 13.68 mm
- R1
- 22.51 mm
- R2
- -22.51 mm
Material
- Name
- N-SF11
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.7847141030246312
- λ
- 587.6 nm
- B1
- 1.73759695
- C1
- 0.013188707 μm2
- B2
- 0.313747346
- C2
- 0.0623068142 μm2
- B3
- 1.89878101
- C3
- 155.23629 μm2
67-629 15mm Dia. x 15mm FL; NIR II Coated; Double-Convex Lens NIR II 750-1550nm
This is a 15mm diameter, 15mm focal length double-convex lens, specifically designed for use in the near-infrared (NIR) spectrum. The lens is sourced from Edmund Optics and is currently in stock.
The lens is made from n-SF11 Schott, a material known for its excellent optical properties in the NIR range. It features a standard curve coating on both the front and back surfaces, specifically the EDM NIR-II coating, which is designed to enhance performance in the NIR II spectrum, between 750nm and 1550nm.
The lens has a center thickness of 4.5mm and an edge thickness of 1.93mm. The effective focal length (EFL) is 15mm, and the back focal length (BFL) is 13.68mm. The first radius of curvature (R1) is 22.51mm, and the second radius of curvature (R2) is -22.51mm, indicating a strongly converging lens. The inner and outer radii are both 0mm, indicating a simple spherical lens without any additional features.