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49-325-INK 12.5 mm Dia. N-SK11/N-SF5 Achromatic Doublet; EFL=35mm VIS-NIR 400-1000nm

49-325-INK 12.5 mm Dia. N-SK11/N-SF5 Achromatic Doublet; EFL=35mm VIS-NIR 400-1000nm

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

Properties

Shape
Circular
Diameter
12.5 mm
EFL
35 mm
R1
22.94 mm
R2
-15.54 mm

Material 1

Name
N-SK11
Dispersion Equation
Sellmeier
n (λ)
1.5658215515592446
λ
550 nm
B1
1.17963631
C1
0.00680282081 μm2
B2
0.229817295
C2
0.0219737205 μm2
B3
0.935789652
C3
101.513232 μm2

Material 2

Name
N-SF5
Dispersion Equation
Sellmeier
n (λ)
1.6771143911586193
λ
550 nm
B1
1.52481889
C1
0.011254756 μm2
B2
0.187085527
C2
0.0588995392 μm2
B3
1.42729015
C3
129.141675 μm2

49-325-INK 12.5 mm Dia. N-SK11/N-SF5 Achromatic Doublet; EFL=35mm VIS-NIR 400-1000nm

The 49-325-INK is a high-quality achromatic doublet lens, sourced from the renowned optical vendor, Edmund Optics. This lens, with a diameter of 12.5 mm, is designed for use in the visible (VIS) and near-infrared (NIR) spectrum, specifically catering to the wavelength range of 400-1000nm. The lens is part of Edmund Optics' extensive catalog, boasting the catalog number 49-325-INK, and is currently in stock.

The lens features an effective focal length (EFL) of 35mm, making it suitable for a wide range of optical applications. The geometry of the lens is meticulously designed, with an edge thickness of 3.98mm, an inner radius of 0mm, and an outer radius also at 0mm. The first radius of curvature (r1) is 22.94mm, while the second radius (r2) is -15.54mm, and the third radius (r3) is -58.84mm. The center thickness of the lens is 3.68mm, with a center thickness 'a' of 1.5mm.

The lens is composed of two types of Schott glass, N-SK11 and N-SF5, which are renowned for their optical properties. The lens is coated with Edmund Optics' VIS-NIR coating (edm visnir0sp2002000) on both the front and back surfaces, enhancing its performance in the VIS-NIR spectrum.

The 49-325-INK is a multiplet lens, meaning it is composed of multiple elements. This design enhances its optical performance, making it an ideal choice for various applications in the VIS-NIR spectrum.

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