69-655 25mm Dia. x 100mm FL; Coated; Ge Plano-Convex Lens BBAR 3-5µm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- 100 mm
- BFL
- 99.25 mm
- R1
- 300.39 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
69-655 25mm Dia. x 100mm FL; Coated; Ge Plano-Convex Lens BBAR 3-5µm
The 69-655 is a 25mm diameter, 100mm focal length plano-convex lens, manufactured by Edmund Optics. This lens is made of Germanium burnett, a material known for its excellent transmission properties in the infrared spectrum, making it ideal for applications in this range.
The lens features a front and back coating of EDM ARCEDGERMANIUM35, a broadband anti-reflection coating designed to minimize surface reflections and increase transmission. This coating is specifically designed for use in the 3-5µm wavelength range, further enhancing the lens's suitability for infrared applications.
The lens has a spherical geometry, with a 300.39mm radius of curvature on the convex side. The center thickness is 3mm, while the edge thickness is 2.74mm. The back focal length is 99.25mm, and the effective focal length is 100mm. The lens does not have any inner or outer radii, indicating a simple, straightforward design.
This lens is currently in stock and can be purchased directly from the Edmund Optics website. The provided weblink leads directly to the product page for easy access.