87-951 25mm Dia. x 250mm 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
- 250 mm
- BFL
- 249.25 mm
- R1
- 750.97 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
87-951 25mm Dia. x 250mm FL; Coated; Ge Plano-Convex Lens BBAR 3-12µm
The 87-951 is a 25mm diameter, 250mm focal length plano-convex lens, designed for use in the 3-12µm wavelength range. This lens is sourced from Edmund Optics, a leading provider of optical components.
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 wide range of applications, including beam shaping, collimation, and focusing.
The lens features a broadband anti-reflection (BBAR) coating on both the front and back surfaces. This coating is designed to reduce surface reflections, thereby improving transmission and reducing ghosting and flare. The coating is applied using Edmund Optics' advanced arc deposition technology, ensuring high uniformity and durability.
The lens has a diameter of 25mm and a thickness of 2.9mm at the edge, increasing to 3mm at the center. The effective focal length (EFL) is 250mm, and the radius of curvature of the curved surface is 750.97mm. The back focal length (BFL) is 249.25mm. The lens does not have any inner or outer radius, indicating a uniform curvature.
