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84-329 6.25 mm Dia. N-FK5/F2HT Achromatic Doublet; EFL=20mm UV-VIS 345-700nm

84-329 6.25 mm Dia. N-FK5/F2HT Achromatic Doublet; EFL=20mm UV-VIS 345-700nm

Type
Lens
Subtype
Multiplets
Brand
Edmund Optics
Product webpage
Edmund Optics products in the 3DOptix catalog

Properties

Shape
Circular
Diameter
6.25 mm
EFL
20 mm
R1
12.09 mm
R2
-9.55 mm

Material 1

Name
N-FK5
Dispersion Equation
Sellmeier
n (λ)
1.4889720412922705
λ
550 nm
B1
0.844309338
C1
0.00475111955 μm2
B2
0.344147824
C2
0.0149814849 μm2
B3
0.910790213
C3
97.8600293 μm2

Material 2

Name
F2HT
Dispersion Equation
Sellmeier
n (λ)
1.6236551229276037
λ
550 nm
B1
1.34533359
C1
0.00997743871 μm2
B2
0.209073176
C2
0.0470450767 μm2
B3
0.937357162
C3
111.886764 μm2

84-329 6.25 mm Dia. N-FK5/F2HT Achromatic Doublet; EFL=20mm UV-VIS 345-700nm

The 84-329 is a high-quality achromatic doublet lens, boasting a 6.25 mm diameter and an effective focal length (EFL) of 20mm. This lens is designed for use in the ultraviolet-visible (UV-VIS) spectrum, specifically between 345-700nm, making it suitable for a wide range of applications.

The lens is composed of two elements, made from N-FK5 and F2HT Schott glass, respectively. These materials are chosen for their excellent optical properties, contributing to the lens's overall performance. The lens features a front coating of EDM UV-VIS std curve, and the back surface is also coated with the same standard curve, enhancing its transmission capabilities and durability.

The lens geometry is carefully designed, with an inner radius of 0mm and an outer radius of 0mm. The edge thickness is 2.8mm, while the center thickness is 2.4mm. The lens also features a first radius (r1) of 12.09mm, a second radius (r2) of -9.55mm, and a third radius (r3) of -25.35mm. These parameters contribute to the lens's excellent imaging capabilities.

This lens is available from Edmund Optics and is currently in stock, making it a readily available option for your optical needs. For more information, please refer to the vendor's website provided in the item data.

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