LB1844-C N-BK7 Bi-Convex Lens; Dia:0.5 in; f=50.0 mm ARC 1050-1700nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 12.7 mm
- EFL
- 20 mm
- BFL
- 49.1 mm
- R1
- 51.1 mm
- R2
- -51.1 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
LB1844-C N-BK7 Bi-Convex Lens; Dia:0.5 in; f=50.0 mm ARC 1050-1700nm
The LB1844-C is a high-quality bi-convex lens from Thorlabs, designed with a base shape of a circle and constructed from N-BK7 Schott glass. This lens is specifically engineered for use in the 1050-1700nm wavelength range, making it ideal for applications in the near-infrared spectrum.
The lens features a diameter of 0.5 inches (12.7mm) and a thickness at the edge of 1.8mm. The center thickness is 4.7mm, providing excellent structural integrity and durability. The effective focal length (EFL) of this lens is 20mm, and the back focal length (BFL) is 49.1mm. The radii of curvature for the first and second surfaces are 51.1mm and -51.1mm, respectively.
The LB1844-C is coated with Thorlabs' proprietary AR coating, which is broadband and anti-reflective, spanning from 1050nm to 1700nm. This coating significantly reduces surface reflections, thereby enhancing the overall transmission of the lens. The lens is designed for spherical geometry, ensuring optimal performance in a wide range of optical systems.
This lens is currently in stock and available for immediate shipping. For more detailed information, including technical drawings and performance data, please refer to the product page on Thorlabs' website.