45-783 6 mm Dia. N-LAK22/N-SF6 Achromatic Doublet; EFL=9mm NIR II 750-1550nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 6 mm
- EFL
- 9 mm
- R1
- 7.34 mm
- R2
- -4.18 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
45-783 6 mm Dia. N-LAK22/N-SF6 Achromatic Doublet; EFL=9mm NIR II 750-1550nm
The 45-783 is a high-quality achromatic doublet lens, boasting a 6 mm diameter and an effective focal length (EFL) of 9 mm, specifically designed for use within the near-infrared (NIR) spectrum of 750-1550 nm. This lens is sourced from the reputable 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 Schott. These materials were carefully selected to minimize chromatic aberration, ensuring optimal image quality across the entire NIR-II spectral range. The lens features a sophisticated coating on both the front and back surfaces, further enhancing its performance within the NIR spectrum. The coating is Edmund Optics' standard NIR-II coating, which provides excellent transmission and durability.
The lens geometry is intricately designed, with a thickness of 4.26 mm at the edge, 4 mm at the center, and 1.3 mm at the center aperture (aperture 'a'). The inner and outer radii are 0 mm, and the lens has a base shape of a circle. The first and second radii (r1 and r2) are 7.34 mm and -4.18 mm, respectively, while the third radius (r3) is -11.58 mm.
