LA1145-B N-BK7 Plano-Convex Lens; Dia:2 in; f=75.0 mm ARC 650-1050nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 50.8 mm
- EFL
- 75 mm
- BFL
- 66.5 mm
- R1
- 38.6 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5167984379050088
- λ
- 587.6 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
LA1145-B N-BK7 Plano-Convex Lens; Dia:2 in; f=75.0 mm ARC 650-1050nm
The LA1145-B is a high-quality Plano-Convex lens from the renowned optical components manufacturer, Thorlabs. This lens, made from the popular N-BK7 glass, is designed for use in the 650-1050nm wavelength range, making it suitable for a wide range of applications in the near-infrared spectrum.
The lens features a diameter of 2 inches (50.8mm) and a focal length of 75mm, providing a large enough working distance for most optical setups. The lens has a spherical surface with a radius of curvature of 38.6mm on the convex side and a flat surface on the other side. This configuration results in an effective focal length (EFL) of 75mm.
The LA1145-B lens is coated with Thorlabs' Broadband Anti-Reflection coating (BBAR), which is designed to reduce surface reflections and increase transmission across the specified wavelength range. The coating is applied to both the front and back surfaces of the lens.
The lens is 3mm thick at the edge and 12.5mm thick at the center, providing sufficient mechanical strength while maintaining a low profile. The lens is circular in shape, allowing for easy integration into various optical systems.
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