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49-951-INK 9 mm Dia. N-SSK8/N-SF56 Achromatic Doublet; EFL=22.5mm VIS-NIR 400-1000nm

49-951-INK 9 mm Dia. N-SSK8/N-SF56 Achromatic Doublet; EFL=22.5mm VIS-NIR 400-1000nm

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

Properties

Shape
Circular
Diameter
9 mm
EFL
22.5 mm
R1
14.79 mm
R2
-12.09 mm

Material 1

Name
N-SSK8
Dispersion Equation
Sellmeier
n (λ)
1.6203679865890697
λ
550 nm
B1
1.44857867
C1
0.00869310149 μm2
B2
0.117965926
C2
0.0421566593 μm2
B3
1.06937528
C3
111.300666 μm2

Material 2

Name
N-SF56
Dispersion Equation
Sellmeier
n (λ)
1.791037231451858
λ
550 nm
B1
1.73562085
C1
0.0129624742 μm2
B2
0.317487012
C2
0.0612884288 μm2
B3
1.95398203
C3
161.559441 μm2

49-951-INK 9 mm Dia. N-SSK8/N-SF56 Achromatic Doublet; EFL=22.5mm VIS-NIR 400-1000nm

The 49-951-INK is a high-quality achromatic doublet lens, sourced from the renowned optical vendor, Edmund Optics. This lens, with a catalog number 49-951-INK, is specifically designed for use in the visible (VIS) and near-infrared (NIR) spectrum, spanning from 400 to 1000nm.

The lens features a 9mm diameter and an effective focal length (EFL) of 22.5mm, making it suitable for a wide range of optical applications. The lens is constructed from two types of Schott glass, N-SSK8 and N-SF56, which are renowned for their excellent optical properties.

The 49-951-INK lens is coated with Edmund Optics' proprietary VIS-NIR coating (edm visnir0sp2002000) on both the front and back surfaces. This coating enhances the lens's performance in the VIS-NIR spectrum, reducing unwanted reflections and increasing transmission.

The lens's geometry is also noteworthy, with a center thickness of 3mm and edge thickness of 3.58mm. The lens's radii are R1=14.79mm, R2=-12.09mm, and R3=-45.72mm. The lens also features an inner radius of 0mm and an outer radius of 0mm.

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