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47-696 6.25 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=40mm VIS 0° 425-675nm

47-696 6.25 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=40mm VIS 0° 425-675nm

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

Properties

Shape
Circular
Diameter
6.25 mm
EFL
40 mm
R1
25.05 mm
R2
-17.27 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

47-696 6.25 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=40mm VIS 0° 425-675nm

The 47-696 is a high-quality achromatic doublet lens, boasting a 6.25 mm diameter and an effective focal length (EFL) of 40mm. This lens is designed for use within the visible light spectrum, specifically catering to wavelengths between 425 and 675 nanometers.

The lens is composed of two elements, made from N-BK7 and N-SF5 materials, both sourced from Schott. These materials are renowned for their excellent optical properties, contributing to the lens's high performance. The lens features a standard anti-reflective coating, specifically the EDM VIS-0 STD CURVE coating, on both the front and back surfaces. This coating enhances the lens's light transmission capabilities and reduces unwanted reflections.

The lens's geometry is carefully designed to optimize its performance. It has a thickness of 3.01mm at the edge, with the inner and outer radii being 0. The center thickness is 2.3mm, and the lens features three radii of curvature: r1 at 25.05mm, r2 at -17.27mm, and r3 at -49.33mm.

This lens is available from Edmund Optics and is currently in stock, making it an ideal choice for those needing a reliable and high-performing optical component.

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