87-971 50 mm Dia. Germanium Positive Meniscus Lens; EFL=75mm BBAR 8-12µm
- 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
87-971 50 mm Dia. Germanium Positive Meniscus Lens; EFL=75mm BBAR 8-12µm
This is a 50 mm diameter Germanium positive meniscus lens, featuring an effective focal length (EFL) of 75mm and broadband anti-reflection (BBAR) coating for the 8-12 µm wavelength range. The lens is sourced from Edmund Optics and is currently in stock.
The lens has a base shape of a circle and a spherical geometry, with an outer radius of 0 and an inner radius of 0. The edge thickness measures 3.5 mm, while the center thickness is 5 mm. The first radius of curvature (R1) is 81.89, and the second radius of curvature (R2) is 122.77, with a back focal length (BFL) of 71.56.
The lens is made of germanium burnett material, which is suitable for infrared applications. The BBAR coating on both the front and back surfaces reduces surface reflections, ensuring optimal transmission in the specified wavelength range.
For more information, including pricing and availability, please refer to the vendor's website using the provided weblink.