LA1978-A N-BK7 Plano-Convex Lens; Dia:1 in; f=750.0 mm ARC 350-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- 750 mm
- BFL
- 746.1 mm
- R1
- 386.3 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
LA1978-A N-BK7 Plano-Convex Lens; Dia:1 in; f=750.0 mm ARC 350-700nm
The LA1978-A is a high-quality plano-convex lens from Thorlabs, designed for use in a wide range of optical applications. This lens is made from N-BK7 glass, a popular material known for its excellent optical properties and high damage threshold.
The lens has a diameter of 1 inch (25.4 mm) and a focal length of 750.0 mm, making it suitable for use in systems where a long focal length is required. The lens is spherical, with a radius of curvature of 386.3 mm on the curved (convex) side. The flat side of the lens, or the planar side, has an inner radius of 0 mm and an outer radius of 0 mm.
The lens has a thickness of 2 mm at the edge and 2.2 mm at the center. The effective focal length (EFL) of the lens is 750 mm. The back focal length (BFL) is 746.1 mm.
The LA1978-A lens is coated with Thorlabs' anti-reflection coating, which is designed to reduce surface reflections and increase transmission in the 350-700 nm range. This coating is applied to both the front and back surfaces of the lens.