LD2060-B N-SF11 Bi-Concave Lens; Dia:12.7 mm; f=-15.0 mm ARC 650-1050nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 12.7 mm
- EFL
- -15 mm
- BFL
- -15.7 mm
- R1
- -24 mm
- R2
- 24 mm
Material
- Name
- N-SF11
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.7847141030246312
- λ
- 587.6 nm
- B1
- 1.73759695
- C1
- 0.013188707 μm2
- B2
- 0.313747346
- C2
- 0.0623068142 μm2
- B3
- 1.89878101
- C3
- 155.23629 μm2
LD2060-B N-SF11 Bi-Concave Lens; Dia:12.7 mm; f=-15.0 mm ARC 650-1050nm
The LD2060-B is a high-quality bi-concave lens from Thorlabs, designed with a diameter of 12.7 mm and a focal length of -15.0 mm. This lens is made from the premium material n-SF11 Schott, ensuring durability and reliability. The lens features an Anti-Reflection Coating (ARC) optimized for the wavelength range of 650-1050nm, which minimizes surface reflections and enhances overall transmission.
The lens's geometry includes a thickness edge of 4.7 mm and a thickness center of 3 mm, with an effective focal length (EFL) of -15 mm. The radii of curvature for the front and back surfaces are -24 mm and 24 mm, respectively, resulting in a back focal length (BFL) of -15.7 mm. The lens has no inner or outer radius specified, indicating a uniform curvature across the surface.
The LD2060-B is available with a broadband AR coating on both the front and back surfaces, denoted as "tho b bbar". This coating ensures high transmission and low reflectance across the specified wavelength range, making it suitable for various applications.