45-795 12 mm Dia. N-LAK22/N-SF6 Achromatic Doublet; EFL=35mm NIR II 750-1550nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 12 mm
- EFL
- 35 mm
- R1
- 20.23 mm
- R2
- -19.17 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
45-795 12 mm Dia. N-LAK22/N-SF6 Achromatic Doublet; EFL=35mm NIR II 750-1550nm
The 45-795 is a high-performance achromatic doublet lens, boasting a 12 mm diameter and an effective focal length of 35mm, specifically designed for use within the Near-Infrared II spectrum (750-1550nm). This lens is sourced from the esteemed optical vendor, Edmund Optics, and is available for purchase directly from their website.
The lens is composed of two distinct materials, N-LAK22 and N-SF6, both from the reputable Schott glass catalog. This combination allows for superior chromatic correction, minimizing optical aberrations and ensuring high-quality imaging across the entire NIR II spectrum.
The lens geometry is meticulously designed, featuring a center thickness of 4.5mm, reduced to 2.5mm at the edge, and curvature radii of 20.23mm and -19.17mm for the first and second surfaces, respectively. The lens also includes a third surface with a radius of -193.84mm, contributing to its achromatic properties.
Both the front and back surfaces of the lens are coated with Edmund Optics' standard NIR-II coating, optimized for the 750-1550nm range. This coating enhances transmission within the NIR II spectrum, further improving the lens's performance in its intended application.
