63-679 20mm Dia. x 25mm FL; VIS-NIR Coated; Double-Convex Lens VIS-NIR 400-1000nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 20 mm
- EFL
- 25 mm
- BFL
- 23.86 mm
- R1
- 38.34 mm
- R2
- -38.34 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
63-679 20mm Dia. x 25mm FL; VIS-NIR Coated; Double-Convex Lens VIS-NIR 400-1000nm
The 63-679 is a high-quality double-convex lens, designed and manufactured by Edmund Optics. This lens boasts a 20mm diameter and a 25mm focal length, making it suitable for a wide range of applications. The lens is constructed from n-SF11 Schott, a material known for its excellent optical properties.
The lens features a double-convex geometry, with radii of curvature of 38.34mm for the first surface and -38.34mm for the second surface. This geometry results in a back focal length of 23.86mm and an effective focal length of 25mm. The lens has a center thickness of 4mm and an edge thickness of 1.35mm, providing robustness and durability.
The 63-679 lens is coated with a VIS-NIR coating, specifically the edm visnir0sp2002000 coating, on both the front and back surfaces. This coating enhances the lens's performance in the visible and near-infrared spectrum, between 400nm and 1000nm. The coating reduces reflection and increases transmission, improving the overall efficiency and quality of the optical system.