LB1212-C N-BK7 Bi-Convex Lens; Dia:9.0 mm; f=20.0 mm ARC 1050-1700nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 9 mm
- EFL
- 1000 mm
- BFL
- 19 mm
- R1
- 20.1 mm
- R2
- -20.1 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
LB1212-C N-BK7 Bi-Convex Lens; Dia:9.0 mm; f=20.0 mm ARC 1050-1700nm
The LB1212-C is a high-quality bi-convex lens from Thorlabs, designed with a circular base shape and a diameter of 9.0 mm. This lens is fabricated from N-BK7, a popular glass type known for its excellent optical properties, making it an ideal choice for various applications.
The lens features a center thickness of 3.8 mm and an edge thickness of 1.8 mm, providing robustness and durability. It has a focal length (efl) of 1000 mm and a back focal length (bfl) of 19 mm, making it suitable for applications requiring precise focusing and imaging.
The LB1212-C is coated with a broadband anti-reflection coating (ARC) that operates between 1050-1700 nm. This coating reduces surface reflections, enhancing transmission and improving overall system performance.
The lens's geometry, including its radii of curvature (r1 and r2) of 20.1 mm and -20.1 mm, respectively, ensures excellent image quality and low distortion. The lens is available for purchase through the Thorlabs website, where you can find more detailed specifications and related products.