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45-799 12 mm Dia. N-LAK22/N-SF6 Achromatic Doublet; EFL=75mm NIR II 750-1550nm

45-799 12 mm Dia. N-LAK22/N-SF6 Achromatic Doublet; EFL=75mm NIR II 750-1550nm

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

Properties

Shape
Circular
Diameter
12 mm
EFL
75 mm
R1
42.11 mm
R2
-42.3 mm

Material 1

Name
N-LAK22
Dispersion Equation
Sellmeier
n (λ)
1.6536179449828925
λ
550 nm
B1
1.14229781
C1
0.00585778594 μm2
B2
0.535138441
C2
0.0198546147 μm2
B3
1.04088385
C3
100.834017 μm2

Material 2

Name
N-SF6
Dispersion Equation
Sellmeier
n (λ)
1.811866267147773
λ
550 nm
B1
1.77931763
C1
0.0133714182 μm2
B2
0.338149866
C2
0.0617533621 μm2
B3
2.08734474
C3
174.01759 μm2

45-799 12 mm Dia. N-LAK22/N-SF6 Achromatic Doublet; EFL=75mm NIR II 750-1550nm

The 45-799 is a high-performance achromatic doublet lens, boasting a 12 mm diameter and an effective focal length of 75mm, specifically designed for use within the near-infrared spectrum (NIR II) of 750-1550nm. This lens is sourced from the esteemed optical vendor, Edmund Optics, and is available directly from their website.

The lens is constructed from two distinct materials, N-LAK22 and N-SF6, both from the reputable Schott glass catalog. This combination allows for superior optical performance, minimizing chromatic aberration and ensuring excellent image quality across the NIR II spectrum. The lens features a robust design, with a thickness of 5.04mm at the edge and 3mm at the center, providing durability and stability.

The 45-799 lens is coated with Edmund Optics' proprietary NIR-II standard curve coating on both the front and back surfaces. This coating enhances the lens' performance within the NIR II spectrum, improving transmission and reducing unwanted reflections. The curvature of the lens is also optimized, with radii of 42.11mm, -42.3mm, and -565.11mm, contributing to its excellent optical properties.

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