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49-279 40 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=250mm VIS 0° 425-675nm

49-279 40 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=250mm VIS 0° 425-675nm

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

Properties

Shape
Circular
Diameter
40 mm
EFL
250 mm
R1
156 mm
R2
-108.7 mm

Material 1

Name
N-BK7
Dispersion Equation
Sellmeier
n (λ)
1.5185223876207927
λ
550 nm
B1
1.03961212
C1
0.00600069867 μm2
B2
0.231792344
C2
0.0200179144 μm2
B3
1.01046945
C3
103.560653 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

49-279 40 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=250mm VIS 0° 425-675nm

The 49-279 is a high-quality achromatic doublet lens, sourced from the renowned optical components vendor, Edmund Optics. This lens boasts a 40 mm diameter and is designed for use within the visible light spectrum, specifically between 425-675 nm. The lens is part of Edmund Optics' extensive catalog and is currently in stock, as indicated by its weblink status.

The lens is a multiplet, meaning it is composed of multiple optical elements. The geometry of the lens is carefully designed, with an effective focal length (EFL) of 250 mm, a thickness edge of 10.57 mm, and a center thickness of 8 mm. The lens also features an inner radius of 0 and an outer radius of 0, contributing to its compact design.

The lens is constructed from two types of high-grade optical glass: N-BK7 and N-SF5, both from Schott. These materials are known for their excellent optical properties, making them ideal for use in a wide range of applications. The lens is coated with Edmund Optics' standard VIS-0 coating on both the front and back surfaces, which enhances its light transmission capabilities within the specified visible light spectrum.

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