49-956-INK 20 mm Dia. N-BAF10/N-SF6 Achromatic Doublet; EFL=25mm VIS-NIR 400-1000nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 20 mm
- EFL
- 25 mm
- R1
- 18.03 mm
- R2
- -13.27 mm
Material 1
- Name
- N-BAF10
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.6730569473646495
- λ
- 550 nm
- B1
- 1.5851495
- C1
- 0.00926681282 μm2
- B2
- 0.143559385
- C2
- 0.0424489805 μm2
- B3
- 1.08521269
- C3
- 105.613573 μm2
Material 2
- Name
- N-SF6
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.811866267147773
- λ
- 550 nm
- B1
- 1.77931763
- C1
- 0.0133714182 μm2
- B2
- 0.338149866
- C2
- 0.0617533621 μm2
- B3
- 2.08734474
- C3
- 174.01759 μm2
49-956-INK 20 mm Dia. N-BAF10/N-SF6 Achromatic Doublet; EFL=25mm VIS-NIR 400-1000nm
The 49-956-INK is a high-quality achromatic doublet lens, designed and manufactured by Edmund Optics. This lens, with a diameter of 20 mm, is specifically engineered for use in the visible (VIS) and near-infrared (NIR) spectrum, spanning 400-1000nm. The lens is part of Edmund Optics' extensive catalog, and it is currently in stock, as indicated by its weblink status.
The lens features a focal length (EFL) of 25mm, making it suitable for a wide range of optical applications. The geometry of the lens includes an edge thickness of 8.06mm, an inner radius and outer radius of 0, and a center thickness of 9.5mm. The lens also features a center thickness 'a' of 2.5mm.
The 49-956-INK is composed of two types of glass, N-BAF10 and N-SF6, both from Schott. These materials are carefully selected to minimize chromatic aberration, a common issue in optical systems where different wavelengths of light are focused at different points.
The lens is coated with Edmund Optics' VIS-NIR0SP2002000 coating on both the front and back surfaces. This coating is designed to enhance the lens' performance in the VIS-NIR spectrum, providing improved transmission and durability.
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