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49-774 12.7 mm Dia. N-SSK8/N-SF56 Achromatic Doublet; EFL=31.75mm VIS 0° 425-675nm

49-774 12.7 mm Dia. N-SSK8/N-SF56 Achromatic Doublet; EFL=31.75mm VIS 0° 425-675nm

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

Properties

Shape
Circular
Diameter
12.7 mm
EFL
31.75 mm
R1
21.13 mm
R2
-16.69 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

49-774 12.7 mm Dia. N-SSK8/N-SF56 Achromatic Doublet; EFL=31.75mm VIS 0° 425-675nm

The 49-774 is a high-quality achromatic doublet lens, sourced from the renowned optical vendor, Edmund Optics. This lens is designed with a 12.7 mm diameter and features an effective focal length (EFL) of 31.75mm, 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 use of these materials in a doublet configuration helps to minimize chromatic aberration, ensuring sharp and clear images across the visible spectrum, specifically within the 425-675nm range.

The lens geometry is carefully crafted, with a central thickness of 4mm and edge thickness of 4.45mm. The first and second radii are R1=21.13mm and R2=-16.69mm, respectively, while the third radius, R3, is -61.73mm. These parameters contribute to the lens's overall performance and optical quality.

The lens surfaces are coated with Edmund Optics' standard Vis-0 coating, which is applied to both the front and back surfaces. This coating is designed to enhance the lens's transmission within the visible spectrum, further optimizing its performance for various applications.

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