89-199 40mm Dia. x 400mm 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
- 40 mm
- EFL
- 400 mm
- BFL
- 397.35 mm
- R1
- 412.09 mm
- R2
- -412.09 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
89-199 40mm Dia. x 400mm FL; VIS-EXT Coated; Double-Convex Lens VIS-EXT 350-700nm
The 89-199 is a double-convex lens offered by Edmund Optics, boasting a 40mm diameter and a focal length of 400mm. This lens is designed for use within the visible light spectrum, specifically between 350-700nm, making it suitable for a wide range of optical applications.
The lens is constructed from Schott's n-BK7 glass, a popular material in optical systems due to its excellent optical properties and high Abbe number. The base shape of the lens is circular, and it features a front and back coating of EDM VIS-EXT, which is designed to enhance transmission within the visible spectrum.
The geometry of the lens is characterized by its diameter, thickness at the edge (7.03mm), and thickness at the center (8mm). The effective focal length (EFL) is 400mm, and the radii of curvature for the first and second surfaces are 412.09mm and -412.09mm, respectively. The back focal length (BFL) is 397.35mm.
This lens is currently in stock and available for immediate purchase from the Edmund Optics website. Its detailed specifications and wide range of usability make it a versatile and valuable addition to any optical system.