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30-120 15 mm Dia. N-F2/N-BK7/N-F2 Hastings Achromatic Triplet; EFL=25.4mm MgF2 400-700nm

30-120 15 mm Dia. N-F2/N-BK7/N-F2 Hastings Achromatic Triplet; EFL=25.4mm MgF2 400-700nm

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

Properties

Shape
Circular
Diameter
15 mm
EFL
25.4 mm
R1
19 mm
R2
9.3 mm

Material 1

Name
N-F2
Dispersion Equation
Sellmeier
n (λ)
1.6236565068581217
λ
550 nm
B1
1.39757037
C1
0.00995906143 μm2
B2
0.159201403
C2
0.0546931752 μm2
B3
1.2686543
C3
119.248346 μm2

Material 2

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 3

Name
N-F2
Dispersion Equation
Sellmeier
n (λ)
1.6236565068581217
λ
550 nm
B1
1.39757037
C1
0.00995906143 μm2
B2
0.159201403
C2
0.0546931752 μm2
B3
1.2686543
C3
119.248346 μm2

30-120 15 mm Dia. N-F2/N-BK7/N-F2 Hastings Achromatic Triplet; EFL=25.4mm MgF2 400-700nm

The 30-120 is a Hastings Achromatic Triplet lens with a 15 mm diameter and a effective focal length (EFL) of 25.4mm. This lens is sourced from Edmund Optics and is available for purchase on their website. The lens is designed with a multiplet geometry, featuring an inner radius of 0 and an outer radius of 0. The lens's base shape is circular, and it has a thickness edge of 9.41mm.

The lens is composed of three elements made from N-F2 and N-BK7 Schott glass. The first and third elements are made of N-F2, while the second element is made of N-BK7. This configuration helps to correct chromatic aberration, making the lens suitable for use in a wide range of applications.

The lens is coated with Edmund Optics' standard MgF2 coating on both the front and back surfaces. This coating enhances the lens's performance in the 400-700nm spectral range, providing improved transmission and durability.

The lens's geometry includes a center thickness of 1.14mm, a thickness a of 10.21mm, and a thickness b of 1.14mm. The lens's r1 and r2 radii are 19mm and 9.3mm respectively, while the r3 and r4 radii are -9.3mm and -19mm respectively.

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