45-038 50.0mm Dia. x -125 FL; Uncoated; Plano-Concave Lens
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Concave)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 50 mm
- EFL
- -125 mm
- BFL
- -128.3 mm
- R1
- -64.6 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
45-038 50.0mm Dia. x -125 FL; Uncoated; Plano-Concave Lens
The 45-038 is a 50.0mm diameter, plano-concave lens with a focal length of -125mm, sourced from Edmund Optics. This lens is uncoated, meaning it does not have any additional layers to enhance its optical properties or protect it from environmental factors.
The lens's geometry is characterized by a thickness of 9.87mm at the edge and 5.0mm at the center. The inner and outer radii are both zero, indicating a flat surface on one side and a curved surface on the other. The curvature of the lens is defined by a radius of -64.6mm on the curved surface.
The lens is made of n-BK7 Schott, a popular optical glass due to its excellent optical properties and high Abbe number. The Abbe number, or V-number, is a measure of the material's dispersion, which is crucial in applications where chromatic aberration needs to be minimized.
The lens is designed to operate at a wavelength of 587.6nm, which is in the yellow-green part of the visible light spectrum. This makes it suitable for applications that use this specific wavelength, such as certain types of fluorescence microscopy.
Please note that the lens is spherical, which means it has the same curvature in all meridional sections, passing through the center of the lens. This shape is common in optical lenses due to its simplicity and the ease of manufacturing.