69-666 25mm Dia. x 75mm FL; Coated; Ge Plano-Convex Lens BBAR 8-12µm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- 75 mm
- BFL
- 75.25 mm
- R1
- 225.29 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
69-666 25mm Dia. x 75mm FL; Coated; Ge Plano-Convex Lens BBAR 8-12µm
The 69-666 is a 25mm diameter, 75mm focal length plano-convex lens, designed for use in the 8-12µm spectral 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 high refractive index and transparency in the infrared spectrum. The plano-convex geometry, where one side is flat and the other is curved, is ideal for applications that require a high level of focusing precision.
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 specifically tailored for the 8-12µm spectral range, ensuring optimal performance in this wavelength band.
The lens has a clear aperture of 25mm and a thickness of 2.65mm at the edge, increasing to 3mm at the center. The effective focal length (EFL) is 75mm, and the radius of curvature (R1) is 225.29mm. The back focal length (BFL) is 75.25mm.
This lens is a versatile and high-performance optical component, suitable for a wide range of infrared applications. It is available for purchase directly from Edmund Optics, and the provided weblink provides current stock and pricing information.
