45-181 50 mm Dia. N-BAK4/N-SF10 Achromatic Doublet; EFL=300mm MgF2 400-700nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 50 mm
- EFL
- 300 mm
- R1
- 173.11 mm
- R2
- -164.03 mm
Material 1
- Name
- N-BAK4
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5709961571059783
- λ
- 550 nm
- B1
- 1.28834642
- C1
- 0.00779980626 μm2
- B2
- 0.132817724
- C2
- 0.0315631177 μm2
- B3
- 0.945395373
- C3
- 105.965875 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
45-181 50 mm Dia. N-BAK4/N-SF10 Achromatic Doublet; EFL=300mm MgF2 400-700nm
The 45-181 is a high-quality achromatic doublet lens, boasting a 50 mm diameter and a focal length of 300 mm. This lens is sourced from the renowned optical vendor, Edmund Optics, and is available for purchase on their official website. The product link provided is currently valid and indicates that the item is in stock.
The lens is constructed from two types of glass, N-BAK4 and N-SF10, both from Schott. These materials are known for their excellent optical properties, contributing to the lens' high performance. The lens features a front and back coating of edm mgf2 std curve, which enhances its light transmission capabilities and reduces surface reflections.
The geometry of the lens is carefully designed, with a thickness of 10.24 mm at the edge and 9 mm at the center. The lens also features a central thickness 'a' of 3.5 mm. The radii of the lens surfaces are R1 = 173.11 mm, R2 = -164.03 mm, and R3 = -709.83 mm. These parameters are crucial in determining the lens' optical performance.
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