87-959 50 mm Dia. Germanium Positive Meniscus Lens; EFL=75mm Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Concave)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 50 mm
- EFL
- 75 mm
- BFL
- 71.56 mm
- R1
- 81.89 mm
- R2
- 122.77 mm
Material
- Name
- Germanium
- Dispersion Equation
- Sellmeier
- n (λ)
- 4.00355628065046
- λ
- 10600 nm
- B1
- 0.4886331
- C1
- 1.393959 μm2
- B2
- 14.5142535
- C2
- 0.1626427 μm2
- B3
- 0.0091224
- C3
- 752.19 μm2
87-959 50 mm Dia. Germanium Positive Meniscus Lens; EFL=75mm Uncoated
This is a 50 mm diameter Germanium positive meniscus lens, with a focal length of 75mm, making it suitable for a variety of optical applications. The lens is uncoated, which means 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 its diameter, thickness at the edge and center, and its radii of curvature. The diameter is 50 mm, with a thickness of 3.5 mm at the edge and 5 mm at the center. The first radius of curvature (r1) is 81.89 mm, and the second radius of curvature (r2) is 122.77 mm. The back focal length (bfl) is 71.56 mm. The lens's inner and outer radii are both 0, indicating a uniform thickness across the lens.
The lens is made of Germanium, identified by its Material ID, and is designed to work with a wavelength of 10600 nm. The lens's shape is spherical, and it does not have any coating.
This lens is available from Edmund Optics, and the link provided in the item data indicates that it is currently in stock.