LB1945-C N-BK7 Bi-Convex Lens; Dia:1 in; f=200.0 mm ARC 1050-1700nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- 100 mm
- BFL
- 199.1 mm
- R1
- 205.6 mm
- R2
- -205.6 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
LB1945-C N-BK7 Bi-Convex Lens; Dia:1 in; f=200.0 mm ARC 1050-1700nm
The LB1945-C N-BK7 Bi-Convex Lens is a high-quality optical component sourced from Thorlabs, a leading vendor in the field of precision photonics. This lens, with a diameter of 1 inch, is designed for use in the spectral range of 1050-1700nm, making it suitable for a wide range of applications in infrared spectroscopy, laser systems, and optical imaging.
The lens features a bi-convex geometry, meaning it has two spherical surfaces that are both convex, or outwardly curved. This design allows for a focal length of 200.0 mm, as indicated by the 'f=200.0 mm' in the product name. The 'ARC' in the name refers to the Anti-Reflection Coating, which is applied to both the front and back surfaces of the lens. This coating, denoted as 'tho c bbar', is designed to reduce surface reflections and increase transmission in the specified wavelength range.
The lens is made from N-BK7 glass, a common material in optical systems due to its excellent optical properties and wide transmission range. The geometry of the lens includes a thickness of 2mm at the edge and 4.1mm at the center, providing structural integrity while minimizing optical aberrations.