45-928 12mm Dia. x -12mm FL; VIS-NIR Coated; Double-Concave Lens 400-1000nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 12 mm
- EFL
- -12 mm
- BFL
- -12.81 mm
- R1
- -19.47 mm
- R2
- 19.47 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
45-928 12mm Dia. x -12mm FL; VIS-NIR Coated; Double-Concave Lens 400-1000nm
The 45-928 is a double-concave spherical lens, 12mm in diameter and featuring a focal length of -12mm, sourced from Edmund Optics. This lens is designed for use within the visible to near-infrared spectrum (400-1000nm), making it suitable for a wide range of optical applications.
The lens's base shape is circular, and its geometry includes an edge thickness of 4.71mm and a center thickness of 3mm. The front and back surfaces of the lens are coated with the EDM VIS-NIR 0SP2002000 coating, which is optimized for the visible and near-infrared regions. This coating enhances the lens's performance by reducing surface reflections and increasing transmission.
The lens is made from n-SF11 Schott, a high-index glass with excellent optical properties. The inner and outer radii of the lens are 0mm, and the back focal length is -12.81mm. The lens's shape is spherical, and its design wavelength is 587.6nm.