A280-B 6.5 mm Dia. H-LAK54 Molded Glass Aspheric Lenses; EFL=18.4 mm; NA=0.15 AR 650-1050nm
- Type
- Lens
- Subtype
- Aspheric Lens
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 6.5 mm
- EFL
- 18.4 mm
- R1
- 13.22 mm
- R2
Material
- Name
- H-LAK54
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.7243689054934244
- λ
- 780 nm
- B1
- 1.20772937
- C1
- 0.0176389155 μm2
- B2
- 0.737418371
- C2
- 0.000666515982 μm2
- B3
- 1.35749026
- C3
- 96.9938806 μm2
A280-B 6.5 mm Dia. H-LAK54 Molded Glass Aspheric Lenses; EFL=18.4 mm; NA=0.15 AR 650-1050nm
The A280-B is a high-quality aspheric lens from Thorlabs, designed with a 6.5 mm diameter and a focal length of 18.4 mm. This lens is made from H-LAK54 glass, a molded glass material known for its excellent optical properties. The lens is coated with a broadband anti-reflection coating, optimized for the 650-1050 nm range, which minimizes surface reflections and increases transmission.
The A280-B features a unique aspheric design, which provides superior optical performance compared to traditional spherical lenses. The aspheric surface reduces spherical aberration, coma, and other optical aberrations, resulting in a higher-quality image. The lens has a numerical aperture (NA) of 0.15, which determines the light-gathering ability of the lens and its ability to resolve fine details.
The lens has a center thickness of 2.17 mm and an edge thickness of 1.77 mm, providing excellent mechanical stability. The lens is available in two different coating options: tho b bbar for both the front and back surfaces. This coating provides excellent optical performance and durability.
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