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LE1613-B 50.8 mm Dia. N-BK7 Positive Meniscus Lens; EFL=250mm 650-1050nm

LE1613-B 50.8 mm Dia. N-BK7 Positive Meniscus Lens; EFL=250mm 650-1050nm

Type
Lens
Subtype
Spherical Lens (Convex-Concave)
Brand
Thorlabs
Product webpage
Thorlabs products in the 3DOptix catalog

Properties

Shape
Circular
Diameter
50.8 mm
EFL
250 mm
BFL
243.5 mm
R1
82.5 mm
R2
224.7 mm

Material

Name
N-BK7
Dispersion Equation
Sellmeier
n (λ)
1.5167984379050088
λ
587.6 nm
B1
1.03961212
C1
0.00600069867 μm2
B2
0.231792344
C2
0.0200179144 μm2
B3
1.01046945
C3
103.560653 μm2

LE1613-B 50.8 mm Dia. N-BK7 Positive Meniscus Lens; EFL=250mm 650-1050nm

The LE1613-B is a spherical lens with a base shape of a circle, sourced from the reputable vendor Thorlabs. This positive meniscus lens, designed for use within the wavelength range of 650-1050nm, boasts a diameter of 50.8mm and an effective focal length (EFL) of 250mm.

The lens's geometry is intricately designed with an edge thickness of 2.9mm and a center thickness of 5.5mm. The first radius of curvature (R1) is 82.5mm, while the second radius (R2) measures 224.7mm. The back focal length (BFL) is 243.5mm, and both the inner and outer radii are 0mm.

The lens is crafted from N-BK7 Schott, a high-quality optical glass known for its excellent transmission properties and low auto-fluorescence. This material makes the LE1613-B suitable for various applications, including but not limited to, beam shaping, collimation, and imaging.

The lens features a broadband anti-reflection coating, denoted as 'tho b bbar' on both the front and back surfaces. This coating enhances the lens's performance by reducing surface reflections and increasing transmission, thereby minimizing losses and improving signal quality.

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