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SLB-30B-35NIR2 30.0 mm Dia. x -34.7 mm FL; Coated; Double-Concave Lens 750-1550nm

SLB-30B-35NIR2 30.0 mm Dia. x -34.7 mm FL; Coated; Double-Concave Lens 750-1550nm

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

Properties

Shape
Circular
Diameter
30 mm
EFL
-34.7 mm
BFL
-35.3 mm
R1
-36.33 mm
R2
36.33 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-30B-35NIR2 30.0 mm Dia. x -34.7 mm FL; Coated; Double-Concave Lens 750-1550nm

The SLB-30B-35NIR2 is a high-quality double-concave lens, designed and manufactured by OptoSigma. This lens, with a diameter of 30.0 mm, is specifically engineered for use within the wavelength range of 750-1550nm, making it ideal for near-infrared applications.

The lens features a base shape of a circle, with a center thickness of 2mm and an edge thickness of 8.5mm. The effective focal length (EFL) of this lens is -34.7mm, and the back focal length (BFL) is -35.3mm. The first radius of curvature (R1) is -36.33mm, and the second radius of curvature (R2) is 36.33mm. The lens is made from n-BK7 Schott, a popular optical glass known for its excellent optical properties.

The SLB-30B-35NIR2 is coated with Opt IR2, a broadband anti-reflection coating that enhances its performance in the near-infrared region. This coating is applied to both the front and back surfaces of the lens, reducing surface reflections and improving transmission.

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