89-156 12mm Dia. x 72mm 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
- 72 mm
- BFL
- 71.07 mm
- R1
- 73.97 mm
- R2
- -73.97 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
89-156 12mm Dia. x 72mm FL; VIS-EXT Coated; Double-Convex Lens VIS-EXT 350-700nm
The 89-156 is a double-convex lens with a diameter of 12mm and a focal length of 72mm, 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 chemical durability. The base shape of the lens is circular, and it features a spherical geometry with an inner radius of 0 and an outer radius of 0. The lens has a thickness of 2.31mm at the edge and 2.8mm at the center. The effective focal length (EFL) is 72mm, and the back focal length (BFL) is 71.07mm.
The lens is coated with EDM VIS-EXT on both the front and back surfaces. This coating enhances the lens's performance in the visible spectrum, specifically between 350-700nm. The coating is designed to reduce surface reflections, increase transmission, and improve overall image quality.
The 89-156 is a robust and reliable lens, ideal for applications that require high-performance optics in the visible light spectrum. Its double-convex design and high-quality coating make it a suitable choice for various optical systems.