45-216-INK 25 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=400mm MgF2 400-700nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- 400 mm
- R1
- 244.65 mm
- R2
- -179.62 mm
Material 1
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5185223876207927
- λ
- 550 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
Material 2
- Name
- N-SF5
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.6771143911586193
- λ
- 550 nm
- B1
- 1.52481889
- C1
- 0.011254756 μm2
- B2
- 0.187085527
- C2
- 0.0588995392 μm2
- B3
- 1.42729015
- C3
- 129.141675 μm2
45-216-INK 25 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=400mm MgF2 400-700nm
The 45-216-INK is a high-quality achromatic doublet lens, sourced from the renowned optical vendor, Edmund Optics. This lens, with a diameter of 25 mm, is designed for use in the spectral range of 400-700 nm, making it suitable for a wide range of optical applications.
The lens is a multiplet, composed of two different materials: N-BK7 and N-SF5, both from Schott. This combination is used to correct chromatic aberrations, ensuring high-quality imaging. The lens has an effective focal length (EFL) of 400 mm, making it a medium to long-range telephoto lens.
The lens features a standard MgF2 coating on both the front and back surfaces. This coating reduces reflection and increases transmission, enhancing the overall performance of the lens. The edge thickness of the lens is 5.03 mm, while the center thickness is 3 mm. The inner and outer radii are 0, indicating a simple, circular geometry.
The lens is currently in stock and available for immediate purchase. For more information, including pricing and detailed specifications, please refer to the vendor's website using the provided weblink.
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