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SLB-20-90P 20.0 mm Dia. x 90.0 mm FL; Plano-Convex Lens Uncoated

SLB-20-90P 20.0 mm Dia. x 90.0 mm FL; Plano-Convex Lens Uncoated

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

Properties

Shape
Circular
Diameter
20 mm
EFL
90 mm
BFL
88 mm
R1
46.71 mm

Material

Name
N-BK7
Dispersion Equation
Sellmeier
n (λ)
1.518720636186463
λ
546.1 nm
B1
1.03961212
C1
0.00600069867 μm2
B2
0.231792344
C2
0.0200179144 μm2
B3
1.01046945
C3
103.560653 μm2

SLB-20-90P 20.0 mm Dia. x 90.0 mm FL; Plano-Convex Lens Uncoated

The SLB-20-90P is a Plano-Convex lens with a diameter of 20.0 mm and a focal length of 90.0 mm. This lens is sourced from OptoSigma, a renowned vendor in the optical industry. The lens is made of n-BK7 Schott, a high-quality optical glass known for its excellent transparency and low auto-fluorescence.

The lens geometry features a planar surface on one side and a convex surface on the other. The edge thickness is 2.0 mm, while the center thickness is 3.1 mm. The effective focal length (EFL) is 90.0 mm, and the radius of curvature (R1) is 46.71 mm. The back focal length (BFL) is 88.0 mm, and both the inner and outer radii are 0 mm.

This lens is uncoated, meaning it does not have any anti-reflective or other coatings. This may result in higher reflective losses and lower transmission compared to coated lenses. However, uncoated lenses are often preferred in applications where cost, simplicity, or specific optical properties are of primary concern.

The lens is designed to operate at a wavelength of 546.1 nm. It is spherical in shape, which is a common choice for many optical applications due to its ease of manufacturing and good optical performance.

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