45-790 6 mm Dia. N-LAK22/N-SF6 Achromatic Doublet; EFL=40mm NIR II 750-1550nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 6 mm
- EFL
- 40 mm
- R1
- 21.81 mm
- R2
- -22.07 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
45-790 6 mm Dia. N-LAK22/N-SF6 Achromatic Doublet; EFL=40mm NIR II 750-1550nm
The 45-790 is a high-performance achromatic doublet lens, boasting a 6 mm diameter and an effective focal length of 40mm, 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 directly from their website.
The lens is constructed from two distinct materials, N-LAK22 and N-SF6, both from the reputable Schott glass catalog. These materials have been carefully selected to minimize chromatic aberration, ensuring optimal image quality across the entire NIR II spectrum. The lens features a sophisticated geometry, with a thickness of 4.08mm at the edge, and a center thickness of 3mm, which can be further reduced to 1.3mm if necessary.
The 45-790 lens is coated with Edmund Optics' proprietary NIR-II Standard Curve coating on both the front and back surfaces. This coating is designed to enhance the lens' performance within the NIR II spectrum, further bolstering its suitability for applications in this range.
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