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SLB-20-80NIR2 20.0 mm Dia. x -80.0 mm FL; Coated; Plano-Concave Lens 750-1550nm

SLB-20-80NIR2 20.0 mm Dia. x -80.0 mm FL; Coated; Plano-Concave Lens 750-1550nm

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

Properties

Shape
Circular
Diameter
20 mm
EFL
-80 mm
BFL
-81.3 mm
R1
-41.52 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-20-80NIR2 20.0 mm Dia. x -80.0 mm FL; Coated; Plano-Concave Lens 750-1550nm

The SLB-20-80NIR2 is a Plano-Concave Spherical Lens, 20.0 mm in diameter and featuring a focal length of -80.0 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 material known for its excellent optical properties.

The lens's geometry includes a thickness edge of 3.2 mm and a thickness center of 2 mm, providing a robust structure. The inner and outer radii are both 0 mm, indicating a flat surface on one side and a curved surface on the other. The lens's effective focal length (EFL) is -80.0 mm, and the back focal length (BFL) is -81.3 mm, suggesting a strong converging capability.

The SLB-20-80NIR2 is coated with opt ir2 on both the front and back surfaces, enhancing its performance in the 750-1550nm wavelength range. This coating ensures high transmission and low reflection, making it suitable for use in various applications, including but not limited to, infrared spectroscopy, thermal imaging, and optical fiber communication.

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