LD1170 N-BK7 Bi-Concave Lens; Dia:25.4 mm; f=-75.0 mm Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- -75 mm
- BFL
- -75.9 mm
- R1
- -77.9 mm
- R2
- 77.9 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5167984379050088
- λ
- 587.6 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
LD1170 N-BK7 Bi-Concave Lens; Dia:25.4 mm; f=-75.0 mm Uncoated
The LD1170 is a high-quality bi-concave lens offered by Thorlabs, a leading global manufacturer of photonics components. This lens, crafted from the renowned N-BK7 glass by Schott, is designed for use in a wide range of optical systems.
The lens features a diameter of 25.4 mm and a base shape of a circle. It has a center thickness of 3.5 mm and an edge thickness of 5.6 mm, providing a robust and durable structure. The lens's effective focal length (EFL) is -75 mm, indicating its concave-concave nature, which is ideal for diverging light paths.
The LD1170's radii of curvature are -77.9 mm for the first surface and 77.9 mm for the second, contributing to its unique optical properties. The back focal length (BFL) is -75.9 mm, and the lens has no inner or outer radius, indicating a uniform curvature across its surface.
This lens is designed for use with a wavelength of 587.6 nm, making it suitable for a wide range of applications in the visible light spectrum. The lens is uncoated, offering users the flexibility to apply their preferred coatings based on their specific application requirements.