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48-696 6mm Dia. x -15 FL; VIS-NIR Coated; Plano-Concave Lens 400-1000nm

48-696 6mm Dia. x -15 FL; VIS-NIR Coated; Plano-Concave Lens 400-1000nm

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

Properties

Shape
Circular
Diameter
6 mm
EFL
-15 mm
BFL
-16.32 mm
R1
-7.75 mm

Material

Name
N-BK7
Dispersion Equation
Sellmeier
n (λ)
1.5167984379050088
λ
587.6 nm
B1
1.03961212
C1
0.00600069867 μm2
B2
0.231792344
C2
0.0200179144 μm2
B3
1.01046945
C3
103.560653 μm2

48-696 6mm Dia. x -15 FL; VIS-NIR Coated; Plano-Concave Lens 400-1000nm

The 48-696 is a 6mm diameter Plano-Concave lens with a focal length of -15, sourced from the reputable optical vendor, Edmund Optics. This lens is designed for use within the visible to near-infrared spectrum, spanning 400 to 1000nm, making it suitable for a wide range of optical applications.

The lens is fabricated from N-BK7 Schott glass, a popular choice due to its excellent optical properties and broad transmission range. The plano-concave geometry, characterized by a flat front surface and a curved back surface, is designed to refract light rays inward, making it ideal for use as a diverging lens.

The lens features a center thickness of 2mm and an edge thickness of 2.49mm, providing robustness and durability. The inner and outer radii are both zero, indicating a simple, straightforward design. The back focal length is -16.32mm, a value that is negative due to the concave back surface.

The lens is coated with a broadband anti-reflection coating, specifically the EDM VisNIR 0SP2002000 coating, on both the front and back surfaces. This coating is designed to reduce surface reflections, thereby improving transmission and enhancing overall system performance.

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