111-0228E 25.4 mm Dia. x 250 mm FL; Uncoated; Double-Convex Lens
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- EKSMA Optics
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- 250 mm
- R1
- 258.7 mm
- R2
- -258.7 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5187257728940171
- λ
- 546 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
111-0228E 25.4 mm Dia. x 250 mm FL; Uncoated; Double-Convex Lens
The 111-0228E is a double-convex lens with a diameter of 25.4 mm and a focal length of 250 mm. This lens is sourced from EKSMA Optics, a reputable vendor known for their high-quality optical components. The lens is made of BK7, a popular glass type in the optical industry due to its excellent optical properties and versatility.
The lens features a base shape of a circle, with an edge thickness of 3.4 mm and a center thickness of 4 mm. The inner and outer radii are both zero, indicating a symmetrical lens design. The effective focal length (EFL) is 250 mm, which is the distance from the lens's principal point to the focal point.
This lens is uncoated, meaning it does not have any anti-reflective or other coatings applied to its surfaces. While coatings can enhance the performance of a lens by reducing reflections, increasing transmission, or providing other benefits, an uncoated lens can be a suitable choice for applications where such enhancements are not necessary or desirable.
The wavelength for this lens is 546 nm, which is a common reference wavelength in the optical industry. This wavelength falls within the visible light spectrum, specifically in the green region.