LB1761-B N-BK7 Bi-Convex Lens; Dia:1 in; f=25.4 mm ARC 650-1050nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- 25.4 mm
- BFL
- 22.2 mm
- R1
- 24.5 mm
- R2
- -24.5 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
LB1761-B N-BK7 Bi-Convex Lens; Dia:1 in; f=25.4 mm ARC 650-1050nm
The LB1761-B is a high-quality bi-convex lens from Thorlabs, designed for use in a wide range of optical applications. This lens is fabricated from N-BK7 Schott glass, a popular material known for its excellent optical properties and high damage threshold.
The lens features a diameter of 1 inch (25.4 mm) and a focal length of 25.4 mm, providing a high numerical aperture (NA) and excellent image quality. The bi-convex design, with radii of curvature of 24.5 mm for both the front and back surfaces, ensures minimal spherical aberration and excellent focus.
The lens is coated with Thorlabs' Broadband Anti-Reflection Coating (ARC), designed to reduce surface reflections and increase transmission across the 650-1050 nm spectral range. This coating ensures high light throughput and improved signal-to-noise ratio in your optical system.
The lens has a central thickness of 9 mm and an edge thickness of 1.9 mm, providing robustness and durability. The lens is circular in shape, making it compatible with various optical mounts and holders.
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