48-694 9mm Dia. x -18mm FL; VIS 0deg Coated; Double-Concave Lens 425-675nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 9 mm
- EFL
- -18 mm
- BFL
- -18.49 mm
- R1
- -18.86 mm
- R2
- 18.86 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5167984379050088
- λ
- 587.6 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
48-694 9mm Dia. x -18mm FL; VIS 0deg Coated; Double-Concave Lens 425-675nm
The 48-694 is a Spherical Lens (Concave-Concave) type of optical component, sourced from the reputable vendor, Edmund Optics. This lens, with a base shape of Circular, is designed with a 9mm diameter and a center thickness of 1.5mm, while the edge thickness measures at 2.45mm. The effective focal length (EFL) of this lens is -18mm, making it a double-concave lens.
The lens's front and back surfaces are coated with the "edm vis-0 std curve" coating, which is a part of Edmund Optics' standard curve for visible light. This coating enhances the lens's performance in the visible light spectrum, specifically at the wavelength of 587.6nm.
The lens's geometry includes an inner radius of 0mm and an outer radius of 0mm. The back focal length (BFL) is measured at -18.49mm. The radii of curvature for the first and second surfaces are -18.86mm and 18.86mm, respectively.
The lens is made of n-BK7 Schott material, a high-quality optical glass known for its excellent transparency and low dispersion. This material makes the lens suitable for a wide range of optical applications.
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