89-128 5mm Dia. x 25mm FL; VIS-EXT Coated; Double-Convex Lens VIS-EXT 350-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 5 mm
- EFL
- 25 mm
- BFL
- 24.5 mm
- R1
- 25.58 mm
- R2
- -25.58 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
89-128 5mm Dia. x 25mm FL; VIS-EXT Coated; Double-Convex Lens VIS-EXT 350-700nm
This is a 5mm diameter, double-convex lens with a focal length of 25mm, sourced from Edmund Optics. The lens is made from the high-quality material n-BK7 Schott, which is known for its excellent optical properties. The lens features a front and back coating of edm vis ext, which enhances its transmission capabilities within the visible light spectrum, specifically between 350-700nm.
The lens has a center thickness of 1.5mm and an edge thickness of 1.26mm, providing a robust structure while maintaining a compact design. The inner and outer radii are not specified, indicating that they are not a significant factor in the lens's performance or description. The back focal length (BFL) is 24.5mm, which is a critical measurement for designing optical systems that include this lens.
This lens is a spherical lens, meaning it has a curved surface on both sides. The radii of curvature for the first and second surfaces are 25.58mm and -25.58mm, respectively. This specific curvature profile contributes to the lens's focusing power and overall optical performance.