69-641 25mm Dia. x 50mm FL; Uncoated; Ge Plano-Convex Lens
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- 50 mm
- BFL
- 49.25 mm
- R1
- 150.19 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
69-641 25mm Dia. x 50mm FL; Uncoated; Ge Plano-Convex Lens
The 69-641 is a 25mm diameter, 50mm focal length plano-convex lens, sourced from Edmund Optics. This lens is made of germanium burnett, a material known for its excellent optical properties. The lens's geometry includes a 2.48mm edge thickness and a 3mm center thickness, with a 150.19mm radius on the curved side. The lens has a 49.25mm back focal length and an effective focal length of 50mm.
The lens is uncoated, which means it does not have any anti-reflective or other coatings applied to its surfaces. This can result in higher reflection losses and lower transmission compared to coated lenses, but it also means the lens is less susceptible to damage from environmental factors or handling.
This lens is designed for use in the 10600nm wavelength range, making it suitable for a variety of applications in the infrared spectrum. Its spherical shape ensures excellent image quality, free from aberrations and distortions.
Please note that the lens is circular, making it compatible with a wide range of optical systems and setups. The vendor, Edmund Optics, indicates that this item is in stock, ensuring quick delivery and availability for your optical needs.