LA1979-A N-BK7 Plano-Convex Lens; Dia:2 in; f=200.0 mm ARC 350-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 50.8 mm
- EFL
- 200 mm
- BFL
- 195.3 mm
- R1
- 103 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
LA1979-A N-BK7 Plano-Convex Lens; Dia:2 in; f=200.0 mm ARC 350-700nm
The LA1979-A is a high-quality plano-convex lens, designed and manufactured by Thorlabs, a leading global supplier of photonics equipment. This lens boasts a diameter of 2 inches, or 50.8 millimeters, and a focal length of 200 millimeters, making it suitable for a wide range of optical applications.
The lens is crafted from N-BK7, a type of borosilicate glass known for its excellent optical properties. This material is particularly prized for its low dispersion, high homogeneity, and exceptional transmission in the visible spectrum. The plano-convex design, where one side is flat and the other is curved, allows for efficient light collection and focusing.
The LA1979-A is coated with a broadband anti-reflection coating, specifically designed for the 350-700 nanometer range. This coating significantly reduces surface reflections, thereby enhancing the lens's transmission and overall performance. The coating is applied to both the front and back surfaces of the lens.
The lens's geometry includes a thickness of 3 millimeters at the edge and 6.2 millimeters at the center. The radius of curvature (R1) is 103 millimeters, and the back focal length (BFL) is 195.3 millimeters. The lens's effective focal length (EFL) is 200 millimeters.
