49-389 50 mm Dia. N-BAF10/N-SF10 Achromatic Doublet; EFL=75mm VIS-NIR 400-1000nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 50 mm
- EFL
- 75 mm
- R1
- 51.88 mm
- R2
- -32.79 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-SF10
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.7336618876174243
- λ
- 550 nm
- B1
- 1.62153902
- C1
- 0.0122241457 μm2
- B2
- 0.256287842
- C2
- 0.0595736775 μm2
- B3
- 1.64447552
- C3
- 147.468793 μm2
49-389 50 mm Dia. N-BAF10/N-SF10 Achromatic Doublet; EFL=75mm VIS-NIR 400-1000nm
The 49-389 is a high-quality achromatic doublet lens, boasting a 50 mm diameter and a focal length of 75 mm, specifically designed for the visual (VIS) and near-infrared (NIR) spectrum, spanning 400-1000 nm. This lens is sourced from the renowned optical vendor, Edmund Optics, and is available for purchase on their official website.
The lens is constructed from two types of Schott glass, N-BAF10 and N-SF10, which are renowned for their excellent optical properties. The front and back surfaces of the lens are coated with the EDM VIS-NIR 0SP2002000 coating, enhancing its performance in the specified wavelength range.
The lens geometry is meticulously designed, with an inner radius of 0 and an outer radius of 0, indicating a symmetrical structure. The edge thickness measures 17.07 mm, while the center thickness is 20 mm. The lens also features a central thickness 'a' of 4.5 mm.
This lens is classified as a multiplet, indicating that it is composed of multiple optical elements. The curvature radii of these elements are R1 = 51.88 mm, R2 = -32.79 mm, and R3 = -309.45 mm. The EFL (Effective Focal Length) of the lens is 75 mm, making it suitable for a wide range of optical applications.
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