89-183 25mm Dia. x 150mm 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
- 25 mm
- EFL
- 150 mm
- BFL
- 148.88 mm
- R1
- 154.52 mm
- R2
- -154.52 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
89-183 25mm Dia. x 150mm FL; VIS-EXT Coated; Double-Convex Lens VIS-EXT 350-700nm
The 89-183 is a high-quality double-convex lens, sourced from the renowned optical vendor, Edmund Optics. This lens, with a diameter of 25mm and a focal length of 150mm, is designed for use within the visible light spectrum, specifically between 350-700nm.
The lens is constructed from Schott's n-BK7 glass, a material known for its excellent optical properties and wide transparency range. The base shape of the lens is circular, and it features a double-convex geometry, with radii of curvature of 154.52mm and -154.52mm, respectively. This geometry results in a beneficial effect known as spherical aberration correction.
The lens has an edge thickness of 2.39mm and a center thickness of 3.4mm, contributing to its robustness and durability. The effective focal length (EFL) is 150mm, and the back focal length (BFL) is 148.88mm. The lens does not have an inner or outer radius, indicating a uniform thickness across its diameter.
The 89-183 lens is coated with Edmund Optics' VIS-EXT coating on both the front and back surfaces. This coating is designed to enhance the lens's performance within the visible light spectrum, improving transmission and reducing reflection.