LA1172-B N-BK7 Plano-Convex Lens; Dia:1 in; f=400.0 mm ARC 650-1050nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- 400 mm
- BFL
- 397.1 mm
- R1
- 206 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
LA1172-B N-BK7 Plano-Convex Lens; Dia:1 in; f=400.0 mm ARC 650-1050nm
The LA1172-B is a plano-convex lens made of N-BK7 glass, a popular material in the optical industry due to its excellent optical properties. This lens, sourced from Thorlabs, has a diameter of 1 inch (25.4 mm) and a focal length of 400 mm, making it suitable for a wide range of applications.
The lens's geometry includes a thickness of 2 mm at the edge and 2.4 mm at the center. The front surface has a radius of curvature (R1) of 206 mm, resulting in a back focal length (BFL) of 397.1 mm. The lens's effective focal length (EFL) is 400 mm, which is the distance from the lens's center to the focal point when the lens is used in air.
The LA1172-B is coated with Thorlabs' BBAR coating, which stands for Broadband Anti-Reflection. This coating is designed to reduce reflection over a wide range of wavelengths, specifically from 650 to 1050 nm. The BBAR coating improves the lens's transmission, thereby enhancing its performance in various applications.
This lens is a spherical lens, meaning it has a spherical surface. Spherical lenses are the simplest type of lens and are widely used in various applications due to their ease of manufacturing and versatility.
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