LA1979-B N-BK7 Plano-Convex Lens; Dia:2 in; f=200.0 mm ARC 650-1050nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 50.8 mm
- EFL
- 200 mm
- BFL
- 195.3 mm
- R1
- 103 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
LA1979-B N-BK7 Plano-Convex Lens; Dia:2 in; f=200.0 mm ARC 650-1050nm
The LA1979-B is a high-quality plano-convex lens from Thorlabs, designed for use in a wide range of optical applications. This lens is fabricated from N-BK7, a popular glass type known for its excellent optical properties, making it an ideal choice for applications that require high-performance optics.
The lens has a diameter of 2 inches (50.8 mm) and a focal length of 200.0 mm. The plano-convex design features a flat front surface and a curved back surface, which focuses light onto a single point. The lens has a thickness of 3 mm at the edge and 6.2 mm at the center, providing robustness and stability.
The LA1979-B is coated with Thorlabs' Broadband Anti-Reflection Coating (ARC), designed to reduce surface reflections and increase transmission across the 650-1050 nm wavelength range. This coating ensures optimal performance in near-infrared (NIR) applications, such as laser systems, bio-imaging, and optical spectroscopy.
The geometry of the lens is defined by a radius of curvature (R1) of 103 mm and a back focal length (BFL) of 195.3 mm. The lens is spherical in shape, ensuring excellent imaging quality and low aberration.
