89-192 30mm Dia. x 120mm 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
- 30 mm
- EFL
- 120 mm
- BFL
- 118.34 mm
- R1
- 123.17 mm
- R2
- -123.17 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
89-192 30mm Dia. x 120mm FL; VIS-EXT Coated; Double-Convex Lens VIS-EXT 350-700nm
This is a high-quality double-convex lens, 89-192, offered by Edmund Optics. It boasts a 30mm diameter and a focal length of 120mm, making it suitable for a wide range of optical applications. The lens is made from the renowned N-BK7 glass from Schott, a material known for its excellent optical properties and versatility.
The lens features a double-convex geometry, with radii of curvature of 123.17mm and -123.17mm for the first and second surfaces, respectively. This geometry, combined with the lens's dimensions, results in a back focal length of 118.34mm and an effective focal length of 120mm. The lens has a center thickness of 5mm and an edge thickness of 3.17mm, providing robustness and durability.
The 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 in the visible spectrum, specifically between 350nm and 700nm. It improves transmission, reduces reflection, and increases the lens's overall efficiency, making it an excellent choice for applications that require high-performance optics in the visible spectrum.