LB1904-A N-BK7 Bi-Convex Lens; Dia:1 in; f=125.0 mm ARC 350-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- 125 mm
- BFL
- 123.9 mm
- R1
- 128.2 mm
- R2
- -128.2 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
LB1904-A N-BK7 Bi-Convex Lens; Dia:1 in; f=125.0 mm ARC 350-700nm
The LB1904-A is a high-quality bi-convex lens, designed and manufactured by Thorlabs, a leading global supplier of photonics equipment. This lens, with a diameter of 1 inch (25.4 mm), is constructed from N-BK7 glass, a popular choice due to its excellent optical properties and wide transmission range.
The lens features a focal length of 125.0 mm, providing a large beam waist for efficient light collection and focusing. The bi-convex design, with radii of curvature of 128.2 mm on both sides, ensures a high-quality image with minimal spherical aberration. The lens has a center thickness of 3.3 mm and an edge thickness of 2 mm, providing robustness and durability.
The lens is coated with Thorlabs' ARC coating, designed for the 350-700 nm range. This anti-reflection coating reduces surface reflections, enhancing the transmission of light through the lens. The coating is applied to both the front and back surfaces of the lens, ensuring optimal performance.
More Lens
