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LC1254-C N-BK7 Plano-Concave Lens; Dia:25 mm; f=-100.0 mm ARC 1050-1700nm

LC1254-C N-BK7 Plano-Concave Lens; Dia:25 mm; f=-100.0 mm ARC 1050-1700nm

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

Properties

Shape
Circular
Diameter
25 mm
EFL
-100 mm
BFL
-102.6 mm
R1
-51.5 mm

Material

Name
N-BK7
Dispersion Equation
Sellmeier
n (λ)
1.5150891983370924
λ
632.8 nm
B1
1.03961212
C1
0.00600069867 μm2
B2
0.231792344
C2
0.0200179144 μm2
B3
1.01046945
C3
103.560653 μm2

LC1254-C N-BK7 Plano-Concave Lens; Dia:25 mm; f=-100.0 mm ARC 1050-1700nm

The LC1254-C is a plano-concave lens from Thorlabs, featuring a spherical design and a base shape of a circle. This lens is made from the renowned N-BK7 glass, a type of borosilicate crown glass known for its excellent optical properties, including a high Abbe number and low dispersion. The lens has a diameter of 25 mm and a thickness at the edge of 5.5 mm, while the center thickness is 4 mm.

The lens's effective focal length (EFL) is -100 mm, indicating its diverging nature. The radius of curvature (R1) is -51.5 mm, and the back focal length (BFL) is -102.6 mm. The lens is designed to operate at a wavelength of 632.8 nm.

The LC1254-C comes with anti-reflection (AR) coatings on both the front and back surfaces, specifically designed for the wavelength range of 1050-1700 nm. This coating helps to reduce surface reflections, thereby increasing the amount of light transmitted through the lens.

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