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LA1978-A N-BK7 Plano-Convex Lens; Dia:1 in; f=750.0 mm ARC 350-700nm

LA1978-A N-BK7 Plano-Convex Lens; Dia:1 in; f=750.0 mm ARC 350-700nm

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

Properties

Shape
Circular
Diameter
25.4 mm
EFL
750 mm
BFL
746.1 mm
R1
386.3 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

LA1978-A N-BK7 Plano-Convex Lens; Dia:1 in; f=750.0 mm ARC 350-700nm

The LA1978-A is a high-quality plano-convex lens from Thorlabs, designed for use in a wide range of optical applications. This lens is made from N-BK7 glass, a popular material known for its excellent optical properties and high damage threshold.

The lens has a diameter of 1 inch (25.4 mm) and a focal length of 750.0 mm, making it suitable for use in systems where a long focal length is required. The lens is spherical, with a radius of curvature of 386.3 mm on the curved (convex) side. The flat side of the lens, or the planar side, has an inner radius of 0 mm and an outer radius of 0 mm.

The lens has a thickness of 2 mm at the edge and 2.2 mm at the center. The effective focal length (EFL) of the lens is 750 mm. The back focal length (BFL) is 746.1 mm.

The LA1978-A lens is coated with Thorlabs' anti-reflection coating, which is designed to reduce surface reflections and increase transmission in the 350-700 nm range. This coating is applied to both the front and back surfaces of the lens.

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