48-934 12mm Dia. x -18mm FL; Uncoated; Double-Concave Lens
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 12 mm
- EFL
- -18 mm
- BFL
- -18.65 mm
- R1
- -18.94 mm
- R2
- 18.94 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
48-934 12mm Dia. x -18mm FL; Uncoated; Double-Concave Lens
The 48-934 is a spherical lens with a base shape of circle, sourced from the reputable vendor, Edmund Optics. This lens falls under the category of concave-concave lenses, making it a double-concave lens. The lens has a diameter of 12mm and a focal length of -18mm, indicating its diverging nature.
The lens's geometry is intricately designed with a thickness of 3.76mm at the edge and 2mm at the center. The radii of curvature are -18.94mm for the first surface and 18.94mm for the second surface. The back focal length of the lens is -18.65mm. The inner and outer radii are 0mm, indicating a uniform curvature throughout the lens.
The lens is made of the material n-BK7 Schott, a popular choice in the optical industry due to its excellent optical properties. The wavelength for this lens is 587.6nm. Notably, this lens is uncoated, which means it does not have any anti-reflective or other coatings applied to its surfaces.