89-137 9mm Dia. x 13.5mm 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
- 9 mm
- EFL
- 13.5 mm
- BFL
- 12.56 mm
- R1
- 13.46 mm
- R2
- -13.46 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
89-137 9mm Dia. x 13.5mm FL; VIS-EXT Coated; Double-Convex Lens VIS-EXT 350-700nm
The 89-137 is a double-convex lens with a 9mm diameter and a focal length of 13.5mm, sourced from the renowned optical vendor, Edmund Optics. 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 the optical industry due to its excellent optical properties and versatility. The lens features a front and back coating of EDM VIS-EXT, a broadband anti-reflection coating that enhances transmission within the specified visible wavelength range.
The geometry of the lens includes a 1.2mm edge thickness and a 2.75mm center thickness, providing robustness and durability. The lens's effective focal length (EFL) is 13.5mm, and its back focal length (BFL) is 12.56mm. The first and second radii of curvature are 13.46mm and -13.46mm, respectively.
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