69-685 25mm Dia. x 40mm FL; Coated; Si Plano-Convex Lens BBAR 3-5µm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- 40 mm
- R1
- 96.7 mm
Material
- Name
- Silicon
- Dispersion Equation
- Sellmeier
- n (λ)
- 3.4176022196178844
- λ
- 10600 nm
- B1
- 10.6684293
- C1
- 0.090912191 μm2
- B2
- 0.003043475
- C2
- 1.287660172 μm2
- B3
- 1.54133408
- C3
- 1218816 μm2
69-685 25mm Dia. x 40mm FL; Coated; Si Plano-Convex Lens BBAR 3-5µm
The 69-685 is a 25mm diameter, 40mm focal length Plano-Convex lens, manufactured by Edmund Optics. This lens is made of silicon, specifically silicon sal vil 1957, and features a Broadband Anti-Reflection (BBAR) coating on both the front and back surfaces. The BBAR coating enhances transmission and reduces reflection across a wide range of wavelengths, making it ideal for use in broadband applications.
The lens has a spherical shape, with a 96.7mm radius of curvature on the convex side. The center thickness of the lens is 3mm, while the edge thickness is 2.19mm. The effective focal length (EFL) of the lens is 40mm. The lens does not have any inner or outer radii, indicating a simple plano-convex design.
This lens is designed to work with a wavelength of 10600nm. The coating material is edm arcoatedsilicon, which is specifically designed for use with silicon lenses. The lens is currently in stock and available for purchase through the Edmund Optics website.
