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45-178 40 mm Dia. N-BAK4/N-SF10 Achromatic Doublet; EFL=300mm MgF2 400-700nm

45-178 40 mm Dia. N-BAK4/N-SF10 Achromatic Doublet; EFL=300mm MgF2 400-700nm

Type
Lens
Subtype
Multiplets
Brand
Edmund Optics
Product webpage
Edmund Optics products in the 3DOptix catalog

Properties

Shape
Circular
Diameter
40 mm
EFL
300 mm
R1
194.96 mm
R2
-148.27 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

45-178 40 mm Dia. N-BAK4/N-SF10 Achromatic Doublet; EFL=300mm MgF2 400-700nm

The 45-178 is a high-quality achromatic doublet lens, boasting a 40 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 lens is in stock.

The lens is constructed from two types of glass, N-BAK4 and N-SF10, both from Schott. This combination allows for superior optical performance, particularly in terms of chromatic aberration correction. The lens is coated with MgF2, a standard coating that provides excellent transmission in the visible spectrum (400-700 nm).

The lens geometry is carefully designed, with a central thickness of 9 mm and edge thickness of 11.66 mm. The radii of the lens surfaces are R1 = 194.96 mm, R2 = -148.27 mm, and R3 = -483.71 mm. The lens is circular in shape and has a multiplet design, which contributes to its high optical performance.

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