LB1862-B N-BK7 Bi-Convex Lens; Dia:2 in; f=400.0 mm ARC 650-1050nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 50.8 mm
- EFL
- 400 mm
- BFL
- 398.5 mm
- R1
- 411.3 mm
- R2
- -411.3 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5150823520020043
- λ
- 633 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
LB1862-B N-BK7 Bi-Convex Lens; Dia:2 in; f=400.0 mm ARC 650-1050nm
The LB1862-B is a high-quality bi-convex lens from Thorlabs, designed for use in a wide range of optical applications. This lens is made from N-BK7, a popular glass type known for its excellent optical properties, and features a diameter of 2 inches and a focal length of 400.0 mm.
The lens is designed with a spherical geometry, featuring radii of curvature of 411.3 mm on both surfaces. This design, combined with its high-quality N-BK7 glass, allows for excellent imaging performance and low chromatic aberration. The lens has a central thickness of 4.6 mm and an edge thickness of 3 mm, providing robustness and durability.
The LB1862-B is coated with Thorlabs' BBAR coating, which is designed to reduce reflection and increase transmission across the 650-1050 nm wavelength range. This coating ensures high-quality performance in a wide range of applications, including laser systems, imaging systems, and spectroscopy.
This lens is available for purchase directly from Thorlabs, and the provided weblink indicates that it is currently in stock. With its high-quality materials, robust design, and excellent optical performance, the LB1862-B is an excellent choice for a wide range of optical applications.