69-637 25mm Dia. x 25mm FL; Uncoated; Ge Plano-Convex Lens
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- 25 mm
- BFL
- 24.25 mm
- R1
- 75.1 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
69-637 25mm Dia. x 25mm FL; Uncoated; Ge Plano-Convex Lens
The 69-637 is a 25mm diameter, 25mm focal length plano-convex lens, sourced from Edmund Optics. This lens is made of germanium burnett, a material with a refractive index suitable for infrared applications, particularly at a wavelength of 10600nm.
The lens's geometry includes an edge thickness of 1.95mm and a center thickness of 3mm. The effective focal length (EFL) is 25mm, and the radius of curvature (R1) is 75.1mm. The back focal length (BFL) is 24.25mm, and both the inner and outer radii are 0mm, indicating a planar surface on one side of the lens.
This lens does not come with any coating, which may affect its performance in certain applications. However, its uncoated state could be beneficial in specific use cases where anti-reflection coatings are not required or desirable.
Please note that the weblink provided is valid and indicates that the lens is in stock, making it readily available for your optical needs.
