48-678 6.0mm Dia. x -15 FL; Uncoated; Plano-Concave Lens
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Concave)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 6 mm
- EFL
- -15 mm
- BFL
- -16.32 mm
- R1
- -7.75 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
48-678 6.0mm Dia. x -15 FL; Uncoated; Plano-Concave Lens
The 48-678 is a 6.0mm diameter, plano-concave lens with a focal length of -15mm, sourced from Edmund Optics. This lens is uncoated, which means it does not have any additional layers to protect the surface or modify its optical properties.
The lens's geometry is characterized by a thickness of 2.49mm at the edge and 2mm at the center. The inner and outer radii are both 0, indicating a planar surface on one side and a concave surface on the other. The back focal length (BFL) is -16.32mm, and the effective focal length (EFL) is -15mm.
The lens is made of N-BK7 Schott glass, a common material in optical systems due to its high homogeneity, low optical dispersion, and excellent transmission in the visible and near-infrared regions. The lens is designed to operate at a wavelength of 587.6nm.
This lens is a spherical lens, meaning it has a spherical curvature on at least one surface. Spherical lenses are the simplest type of lens and are widely used in various optical systems due to their simplicity and low cost.
Please note that the lens is uncoated, which may make it more susceptible to damage from environmental factors and may affect its optical performance in certain applications. However, uncoated lenses can be advantageous in applications where low reflectivity is required, as they do not have the additional reflective layers that coatings can introduce.
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