87-945 25mm Dia. x 35mm FL; Coated; Ge Plano-Convex Lens BBAR 3-12µm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- 35 mm
- BFL
- 34.25 mm
- R1
- 105.14 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
87-945 25mm Dia. x 35mm FL; Coated; Ge Plano-Convex Lens BBAR 3-12µm
The 87-945 is a 25mm diameter, 35mm focal length plano-convex lens, designed for use in the 3-12µm wavelength range. This lens is sourced from Edmund Optics, a leading vendor in the optical industry, and is available for immediate purchase.
The lens is made from Germanium Burnett, a material known for its excellent transmission properties in the infrared spectrum. The plano-convex geometry, where one side is flat and the other is curved, is ideal for a variety of applications, including beam shaping and focusing.
The lens has a diameter of 25mm and a thickness of 2.25mm at the edge, increasing to 3mm at the center. The effective focal length (EFL) is 35mm, and the radius of curvature (R1) is 105.14mm. The back focal length (BFL) is 34.25mm, and both the inner and outer radii are 0mm.
The lens features a broadband anti-reflection (BBAR) coating on both the front and back surfaces. This coating, identified as EDM ARCEDGERMANIUM31, is specifically designed to reduce surface reflections and increase transmission in the 3-12µm wavelength range.