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SLSQ-20B-30N 20.0 mm Dia. x -29.7 mm FL; Double-Concave Lens Uncoated

SLSQ-20B-30N 20.0 mm Dia. x -29.7 mm FL; Double-Concave Lens Uncoated

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

Properties

Shape
Circular
Diameter
20 mm
EFL
-29.7 mm
BFL
-30.3 mm
R1
-27.6 mm
R2
27.6 mm

Material

Name
Fused Silica
Dispersion Equation
Sellmeier
n (λ)
1.460077010624967
λ
546.1 nm
B1
0.6961663
C1
0.00467914825849 μm2
B2
0.4079426
C2
0.013512063073959999 μm2
B3
0.8974794
C3
97.934002537921 μm2

SLSQ-20B-30N 20.0 mm Dia. x -29.7 mm FL; Double-Concave Lens Uncoated

The SLSQ-20B-30N is a high-quality double-concave lens offered by OptoSigma, a leading vendor in the optical industry. This lens is designed with a base shape of a circle and features a spherical geometry, making it suitable for a wide range of optical applications.

The lens has a diameter of 20.0 mm and a thickness at the edge of 5.8 mm. The center thickness is 2.0 mm, providing a sleek and compact design. The effective focal length (EFL) of this lens is -29.7 mm, indicating its double-concave nature. The first radius of curvature (R1) is -27.6 mm, while the second radius (R2) is 27.6 mm, contributing to its concave-concave structure.

The back focal length (BFL) of this lens is -30.3 mm. Notably, the inner and outer radii are both 0 mm, suggesting a uniform curvature throughout the lens. The lens is made of fused silica, a material with the material ID "fused sil mal-1965", which is known for its excellent optical properties and durability.

This lens is designed to operate at a wavelength of 546.1 nm. It does not come with any coating, offering a bare, uncoated surface. This could be ideal for applications where coating might interfere with the desired optical properties.

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