68-241 25mm Dia. Germanium Infrared Aspheric Lens; EFL=50mm; NA=0.25 Uncoated
- Type
- Lens
- Subtype
- Aspheric Lens
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- 50 mm
- BFL
- 48.44 mm
- R1
- 74.64 mm
- R2
- 142.9 mm
Material
- Name
- Germanium
- Dispersion Equation
- Sellmeier
- n (λ)
- 4.024720747638282
- λ
- 4000 nm
- B1
- 0.4886331
- C1
- 1.393959 μm2
- B2
- 14.5142535
- C2
- 0.1626427 μm2
- B3
- 0.0091224
- C3
- 752.19 μm2
68-241 25mm Dia. Germanium Infrared Aspheric Lens; EFL=50mm; NA=0.25 Uncoated
This is a 25mm diameter germanium aspheric lens, catalog number 68-241, sourced from Edmund Optics. The lens is designed for infrared applications with a wavelength of 4000nm. It features an effective focal length (EFL) of 50mm and a numerical aperture (NA) of 0.25, making it suitable for a range of optical systems.
The lens is uncoated, which means it does not have any additional layers to enhance its optical properties. However, this also means that it may be more susceptible to environmental factors such as dust and moisture. The inner and outer radii of the lens are not specified, but the diameter is 25mm, and the edge thickness is 2.45mm.
The lens's geometry includes a center thickness of 3mm and a back focal length (BFL) of 48.44mm. The aspheric design helps to reduce spherical aberration and other optical aberrations, enhancing the overall image quality. The lens is made of germanium, a material known for its high refractive index and transparency in the infrared region.
The lens's web links are valid and lead to the product page on the Edmund Optics website, where you can find more information and purchase the lens. It is currently in stock, making it readily available for your optical needs.
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