89-155 12mm Dia. x 48mm 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
- 12 mm
- EFL
- 48 mm
- BFL
- 47.09 mm
- R1
- 49.14 mm
- R2
- -49.14 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
89-155 12mm Dia. x 48mm FL; VIS-EXT Coated; Double-Convex Lens VIS-EXT 350-700nm
The 89-155 is a double-convex lens offered by Edmund Optics, boasting a 12mm diameter and a focal length of 48mm. 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 choice due to its excellent optical properties and versatility. The base shape of the lens is circular, and it features a double-convex geometry, with radii of curvature of 49.14mm on both the front and back surfaces. This geometry contributes to the lens's high optical power and short focal length.
The 89-155 lens comes with VIS-EXT coatings on both the front and back surfaces. These coatings, specific to the visible light spectrum, are designed to enhance the lens's transmission capabilities and reduce surface reflections. The edge thickness of the lens is 2mm, while the center thickness is 2.74mm, contributing to its robustness and durability.