49-489 25mm Dia. x 25mm FL; NIR I Coated; Double-Convex Lens NIR I 600-1050nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- 25 mm
- BFL
- 22.47 mm
- R1
- 31.94 mm
- R2
- -31.94 mm
Material
- Name
- N-SF5
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.6727030184452947
- λ
- 587.6 nm
- B1
- 1.52481889
- C1
- 0.011254756 μm2
- B2
- 0.187085527
- C2
- 0.0588995392 μm2
- B3
- 1.42729015
- C3
- 129.141675 μm2
49-489 25mm Dia. x 25mm FL; NIR I Coated; Double-Convex Lens NIR I 600-1050nm
The 49-489 is a high-quality double-convex lens, boasting a 25mm diameter and a focal length of 25mm. This lens is sourced from the renowned optical vendor, Edmund Optics, and is currently in stock, ready for immediate use.
The lens is constructed from Schott's n-SF5 material, a popular choice for its excellent optical properties. It features a base shape of a circle, with a thickness of 2.9mm at the edge and 8mm at the center. The effective focal length (EFL) is 25mm, while the back focal length (BFL) is 22.47mm.
The 49-489 lens is coated with Edmund Optics' standard NIR-I coating on both the front and back surfaces. This coating is specifically designed for the 600-1050nm wavelength range, enhancing the lens' performance in the near-infrared spectrum.
The lens' geometry is characterized by its first and second radii of curvature, R1 and R2, which are 31.94mm and -31.94mm respectively. The inner and outer radii are both zero, indicating a uniform curvature throughout the lens.