LB1378-B N-BK7 Bi-Convex Lens; Dia:0.5 in; f=40.0 mm ARC 650-1050nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 12.7 mm
- EFL
- 40 mm
- BFL
- 39.1 mm
- R1
- 40.7 mm
- R2
- -40.7 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
LB1378-B N-BK7 Bi-Convex Lens; Dia:0.5 in; f=40.0 mm ARC 650-1050nm
The LB1378-B 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 boasts a diameter of 0.5 inches (12.7 mm) and a thickness at the edge of 1.8 mm, while the center thickness measures 2.8 mm. The effective focal length (EFL) is 40 mm, and the back focal length (BFL) is 39.1 mm.
The LB1378-B lens features a front and back coating of tho b bbar, providing anti-reflection properties within the wavelength range of 650-1050 nm. This coating ensures high transmission and minimal loss of light due to reflection. The lens's shape is spherical, with radii of curvature R1 and R2 at 40.7 mm and -40.7 mm, respectively.
This lens is an excellent choice for applications requiring a high-performance optical component with precise specifications. Its N-BK7 Schott glass material and anti-reflection coating make it suitable for various applications, including imaging systems, beam shaping, and laser applications. The LB1378-B is currently in stock and available through the Thorlabs website, as indicated by its weblink status.