45-799 12 mm Dia. N-LAK22/N-SF6 Achromatic Doublet; EFL=75mm NIR II 750-1550nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
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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