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SLB-50-250NIR2 50.0 mm Dia. x -250.0 mm FL; Coated; Plano-Concave Lens 750-1550nm

SLB-50-250NIR2 50.0 mm Dia. x -250.0 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
50 mm
EFL
-250 mm
BFL
-252 mm
R1
-129.75 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-50-250NIR2 50.0 mm Dia. x -250.0 mm FL; Coated; Plano-Concave Lens 750-1550nm

The SLB-50-250NIR2 is a Plano-Concave Spherical Lens, designed with a diameter of 50.0 mm and a focal length of -250.0 mm. This lens is sourced from OptoSigma, a renowned vendor known for their high-quality optical elements. The lens is made from n-bk7 schott, a material widely used in optical applications due to its excellent optical properties.

The lens's geometry is characterized by a thickness edge of 5.4 mm and a thickness center of 3 mm. The inner and outer radii are both zero, indicating a plano surface on both sides of the lens. The back focal length is -252 mm, and the curvature radius (r1) is -129.75 mm.

The SLB-50-250NIR2 is coated with opt ir2 on both the front and back surfaces. This coating is specifically designed for the wavelength of 546.1 nm, enhancing the lens's performance in this spectral region. The coating ensures high transmission and low reflection, making the lens suitable for use in various applications, particularly in the infrared spectrum of 750-1550 nm.

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