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49-760 12.7 mm Dia. N-SSK8/N-SF56 Achromatic Doublet; EFL=25.4mm MgF2 400-700nm

49-760 12.7 mm Dia. N-SSK8/N-SF56 Achromatic Doublet; EFL=25.4mm MgF2 400-700nm

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

Properties

Shape
Circular
Diameter
12.7 mm
EFL
25.4 mm
R1
16.77 mm
R2
-13.63 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

49-760 12.7 mm Dia. N-SSK8/N-SF56 Achromatic Doublet; EFL=25.4mm MgF2 400-700nm

The 49-760 is a high-quality achromatic doublet lens from Edmund Optics, designed with a 12.7 mm diameter and a focal length of 25.4 mm. This lens is a multiplet, meaning it is composed of multiple optical elements to achieve superior performance.

The lens is made from two types of Schott glass, N-SSK8 and N-SF56, which are renowned for their optical properties. The N-SSK8 is used for the first element, while the N-SF56 is used for the second. This combination helps to correct chromatic aberration, a common issue in optical systems where different wavelengths of light are focused at different points.

The lens features a standard MgF2 coating on both the front and back surfaces. This coating is designed to reduce reflection and increase transmission, particularly in the 400-700 nm range. The thickness of the lens varies, with a center thickness of 4 mm and an edge thickness of 4.1 mm.

The 49-760 is currently in stock and available for purchase through the Edmund Optics website. With its superior optical performance and robust design, this lens is an excellent choice for a wide range of optical applications.

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