45-804 25 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
- 25 mm
- EFL
- 60 mm
- R1
- 36.27 mm
- R2
- -33.8 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
45-804 25 mm Dia. N-LAK22/N-SF6 Achromatic Doublet; EFL=60mm NIR II 750-1550nm
The 45-804 is a high-quality achromatic doublet lens, designed and manufactured by Edmund Optics, specifically for use in the near-infrared spectrum (NIR II) range of 750-1550nm. This lens boasts a 25mm diameter and a focal length of 60mm, making it a versatile choice for a wide range of applications.
The lens is constructed from two types of Schott glass, N-LAK22 and N-SF6, which have been carefully selected and arranged to minimize chromatic aberration. This results in sharper images with improved color correction, even when working with the challenging NIR II spectrum.
The 45-804 features a robust design, with a thickness of 9.46mm at the edge and 8mm at the center. The center thickness can be further reduced to 4mm, providing additional flexibility for users. The lens also has a large inner radius and outer radius of 0mm, contributing to its compact form factor.
Both the front and back surfaces of the lens are coated with Edmund Optics' standard NIR-II coating, ensuring optimal performance in the NIR II spectrum. This coating is designed to reduce surface reflections, increase transmission, and protect the lens from environmental hazards.
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