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AC254-200-A 25.4 mm Dia. N-SSK5/LAFN7 Unmounted Achromatic Doublet; EFL=200.2mm 400-700nm

AC254-200-A 25.4 mm Dia. N-SSK5/LAFN7 Unmounted Achromatic Doublet; EFL=200.2mm 400-700nm

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

Properties

Shape
Circular
Diameter
25.4 mm
R1
77.4 mm
R2
-87.6 mm

Material 1

Name
N-SSK5
Dispersion Equation
Sellmeier
n (λ)
1.6611973884654312
λ
550 nm
B1
1.59222659
C1
0.00920284626 μm2
B2
0.103520774
C2
0.0423530072 μm2
B3
1.05174016
C3
106.927374 μm2

Material 2

Name
LAFN7
Dispersion Equation
Sellmeier
n (λ)
1.7540480256427413
λ
550 nm
B1
1.66842615
C1
0.0103159999 μm2
B2
0.298512803
C2
0.0469216348 μm2
B3
1.0774376
C3
82.5078509 μm2

AC254-200-A 25.4 mm Dia. N-SSK5/LAFN7 Unmounted Achromatic Doublet; EFL=200.2mm 400-700nm

The AC254-200-A is a high-quality achromatic doublet lens from Thorlabs, designed with a 25.4 mm diameter and a focal length of 200.2mm for the 400-700nm wavelength range. This lens is a multiplet type, featuring a complex geometry that includes three radii (r1: 77.4, r2: -87.6, r3: 291.1) and two center thicknesses (thickness center 1: 4, thickness center 2: 2.5).

The lens is made from two types of Schott glass, N-SSK5 and LAFN7, which are renowned for their optical properties. The lens is coated with Thorlabs' proprietary AC400-700-A coating on both the front and back surfaces, enhancing its performance in the specified wavelength range.

The lens is unmounted, providing users with the flexibility to integrate it into their optical systems according to their specific requirements. The catalog number AC254-200-A is valid and in stock, indicating its availability for immediate purchase and use.

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