47-914 6mm Dia. x -6mm FL; VIS 0deg Coated; Double-Concave Lens 425-675nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 6 mm
- EFL
- -6 mm
- BFL
- -6.41 mm
- R1
- -9.74 mm
- R2
- 9.74 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
47-914 6mm Dia. x -6mm FL; VIS 0deg Coated; Double-Concave Lens 425-675nm
The 47-914 is a spherical lens with a base shape of a circle, designed and manufactured by Edmund Optics. This lens falls under the category of a Spherical Lens (Concave-Concave) subtype. The lens has a diameter of 6mm and a thickness at the edge of 2.29mm, while the center thickness is 1.5mm. The effective focal length (EFL) of this lens is -6mm, making it a double-concave lens.
The lens's front and back surfaces are coated with the EDM VIS-0 STD CURVE coating, designed for visible light with a wavelength of 587.6nm. This coating enhances the lens's performance in the visible light spectrum, which ranges from 425 to 675nm.
The lens's first radius of curvature (R1) is -9.74mm, and the second radius of curvature (R2) is 9.74mm. The back focal length (BFL) is -6.41mm. The lens does not have an inner radius or an outer radius.
The lens is made of n-SF11 Schott material, a high-index glass with excellent transmittance in the visible and near-infrared regions. This material is known for its high Abbe number, making it an ideal choice for achromatic applications.