45-792 12 mm Dia. N-LAK22/N-SF6 Achromatic Doublet; EFL=20mm NIR II 750-1550nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 12 mm
- EFL
- 20 mm
- R1
- 13.13 mm
- R2
- -9.59 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
45-792 12 mm Dia. N-LAK22/N-SF6 Achromatic Doublet; EFL=20mm NIR II 750-1550nm
The 45-792 is a high-quality achromatic doublet lens, boasting a 12 mm diameter and a focal length of 20 mm, specifically designed for use in the near-infrared spectrum, covering the wavelength range of 750-1550 nm. This lens is sourced from the renowned optical vendor, Edmund Optics, and is a multiplet type, ensuring superior image quality and minimal chromatic aberration.
The lens is constructed from two types of Schott glass, N-LAK22 and N-SF6, which are renowned for their excellent optical properties in the near-infrared range. The lens features a robust design, with a thickness of 8.65 mm at the edge and 8 mm at the center, ensuring durability and stability. The inner and outer radii of the lens are 0, indicating a symmetrical design that further contributes to its optical performance.
The 45-792 lens is coated with Edmund Optics' standard NIR-II coating on both the front and back surfaces, which is specifically designed to enhance its performance in the near-infrared spectrum. This coating helps to reduce reflection and increase transmission, thereby improving the overall image quality.
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