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LF1822-C 25.4 mm Dia. N-BK7 Negative Meniscus Lens; EFL=-100mm 1050-1700nm

LF1822-C 25.4 mm Dia. N-BK7 Negative Meniscus Lens; EFL=-100mm 1050-1700nm

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

Properties

Shape
Circular
Diameter
25.4 mm
EFL
-100 mm
BFL
-98.7 mm
R1
100 mm
R2
33.7 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

LF1822-C 25.4 mm Dia. N-BK7 Negative Meniscus Lens; EFL=-100mm 1050-1700nm

The LF1822-C is a high-quality spherical lens from Thorlabs, featuring a concave-convex base shape and a circular geometry. With a diameter of 25.4 mm, this lens is designed for use in the 1050-1700nm wavelength range, making it suitable for a wide range of optical applications.

The lens has a center thickness of 3 mm and an edge thickness of 4.7 mm, providing a robust and durable structure. The effective focal length (EFL) of this lens is -100mm, indicating its concave nature. The first radius of curvature (R1) is 100 mm, while the second radius (R2) is 33.7 mm, contributing to its meniscus shape.

The lens is made from n-BK7 Schott glass, a popular material due to its excellent optical properties and wide transparency range. It is coated with THo C Bbar on both the front and back surfaces, enhancing its performance in the specified wavelength range.

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