45-798 12 mm Dia. N-LAK22/N-SF6 Achromatic Doublet; EFL=60mm NIR II 750-1550nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 12 mm
- EFL
- 60 mm
- R1
- 33.92 mm
- R2
- -33.81 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
45-798 12 mm Dia. N-LAK22/N-SF6 Achromatic Doublet; EFL=60mm NIR II 750-1550nm
The 45-798 is a high-quality achromatic doublet lens, boasting a 12 mm diameter and an effective focal length of 60mm, specifically designed for use within the near-infrared (NIR) spectrum of 750-1550nm. 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 optimize the lens' performance within the NIR-II range. The lens features a sophisticated geometry, with a thickness of 4.92mm at the edge, a central thickness of 3mm, and a central thickness 'a' of 2.5mm. The lens curvature consists of three radii: r1 at 33.92mm, r2 at -33.81mm, and r3 at -419.99mm.
The 45-798 lens is equipped with a standard coating on both the front and back surfaces, specifically the EDM NIR-II STD CURVE coating. This coating enhances the lens' performance within the NIR-II spectrum, ensuring optimal image quality and minimal distortion.
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