89-154 12mm Dia. x 36mm 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
- 36 mm
- BFL
- 34.9 mm
- R1
- 36.65 mm
- R2
- -36.65 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
89-154 12mm Dia. x 36mm FL; VIS-EXT Coated; Double-Convex Lens VIS-EXT 350-700nm
The 89-154 is a double-convex lens with a diameter of 12mm and a focal length of 36mm, making it a versatile choice for various optical applications. This lens is sourced from Edmund Optics, a reputable vendor known for its high-quality optical components.
The lens is made from n-BK7 Schott, a popular optical glass due to its excellent optical properties and high Abbe number. The base shape of the lens is circular, and it features a double-convex geometry, which is characterized by having two spherical surfaces that curve outwards. This geometry is ideal for applications that require a strong converging lens.
The lens has an effective focal length (EFL) of 36mm, which is the distance from the lens's secondary focal point to its center. The first radius of curvature (R1) is 36.65mm, and the second radius of curvature (R2) is -36.65mm, indicating that the lens's second surface is concave. The back focal length (BFL) is 34.9mm, which is the distance from the lens's rear focal point to its physical rear surface.
The lens features VIS-EXT coatings on both the front and back surfaces. These coatings are designed to extend the lens's usable wavelength range from 350 to 700nm, making it suitable for a wide range of applications, including those in the visible spectrum.