LC1582-B N-BK7 Plano-Concave Lens; Dia:1 in; f=-75.0 mm ARC 650-1050nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Concave)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- -75 mm
- BFL
- -77.3 mm
- R1
- -38.6 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
LC1582-B N-BK7 Plano-Concave Lens; Dia:1 in; f=-75.0 mm ARC 650-1050nm
The LC1582-B is a plano-concave lens with a diameter of 1 inch, designed and manufactured by Thorlabs. This lens is made from N-BK7, a popular optical glass from Schott, known for its excellent optical properties and versatility. The lens features a focal length of -75mm, making it suitable for a wide range of applications where a diverging lens is required.
The lens geometry includes a thickness of 5.6mm at the edge and 3.5mm at the center, providing a robust structure while maintaining a sleek profile. The effective focal length (EFL) is -75mm, and the radius of curvature (R1) is -38.6mm, contributing to the lens's diverging properties. The back focal length (BFL) is -77.3mm, which is the distance from the lens's rear surface to its focal point.
The LC1582-B is coated with Thorlabs' BBAR coating (Broadband Anti-Reflection Coating) on both the front and back surfaces, specifically designed for the 650-1050nm wavelength range. This coating enhances the lens's performance by reducing surface reflections, thereby increasing transmission and improving overall system efficiency.
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