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69-492 12.0mm Dia. x 72.0mm FL; Plano-Convex Lens Laser V-Coat 785nm

69-492 12.0mm Dia. x 72.0mm FL; Plano-Convex Lens Laser V-Coat 785nm

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

Properties

Shape
Circular
Diameter
12 mm
EFL
72 mm
BFL
70.42 mm
R1
37.21 mm

Material

Name
N-BK7
Dispersion Equation
Sellmeier
n (λ)
1.5110795649082278
λ
785 nm
B1
1.03961212
C1
0.00600069867 μm2
B2
0.231792344
C2
0.0200179144 μm2
B3
1.01046945
C3
103.560653 μm2

69-492 12.0mm Dia. x 72.0mm FL; Plano-Convex Lens Laser V-Coat 785nm

The 69-492 is a Plano-Convex Spherical Lens, 12.0mm in diameter and featuring a focal length of 72.0mm, specifically designed for use with a 785nm wavelength. This lens is sourced from Edmund Optics, a leading vendor in the optical industry, and is currently in stock.

The lens is made from n-BK7 Schott, a high-quality optical glass known for its excellent transparency and low auto-fluorescence. The Plano-Convex geometry, where one side is flat and the other is rounded, is ideal for collimating or focusing light. The lens has a center thickness of 2.4mm and an edge thickness of 1.91mm, providing a robust structure while maintaining a low profile.

The lens features a front and back coating of EDM Las V-Coat 785, a specialized coating designed to enhance laser damage threshold and improve transmission at the specified wavelength. The effective focal length (EFL) is 72.0mm, and the back focal length (BFL) is 70.42mm, making it suitable for various optical applications.

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