48-681 6mm Dia. x -12mm FL; Uncoated; Double-Concave Lens
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 6 mm
- EFL
- -12 mm
- BFL
- -12.33 mm
- R1
- -12.57 mm
- R2
- 12.57 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
48-681 6mm Dia. x -12mm FL; Uncoated; Double-Concave Lens
The 48-681 is a spherical lens with a base shape of circle, sourced from the reputable vendor, Edmund Optics. This lens falls under the category of Spherical Lens (Concave-Concave) and is uncoated. The lens has a diameter of 6mm and a thickness edge of 1.59mm, while the thickness center measures 1mm. The effective focal length (EFL) is -12mm, indicating its concave nature.
The lens's first radius of curvature (R1) is -12.57mm, and the second radius of curvature (R2) is 12.57mm. The back focal length (BFL) is -12.33mm. The lens does not have any inner or outer radius, indicating it is a simple lens without any additional features.
The lens is made of n-BK7 Schott material, a common choice for optical elements due to its excellent optical properties. The wavelength for this lens is 587.6nm. This lens is a double-concave lens, meaning it has two concave surfaces. The concave shape causes light rays to bend towards the center of the lens, making it suitable for applications where light needs to be focused or diverged.
Please note that this lens is uncoated. Coatings are often applied to lenses to reduce reflection, increase transmission, or provide other desirable optical properties. However, this lens does not have any coatings, which may affect its performance in certain applications.
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