89-200 50mm Dia. x 50mm 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
- 50 mm
- EFL
- 50 mm
- BFL
- 45.3 mm
- R1
- 74.78 mm
- R2
- -74.78 mm
Material
- Name
- N-SF11
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.7847141030246312
- λ
- 587.6 nm
- B1
- 1.73759695
- C1
- 0.013188707 μm2
- B2
- 0.313747346
- C2
- 0.0623068142 μm2
- B3
- 1.89878101
- C3
- 155.23629 μm2
89-200 50mm Dia. x 50mm FL; VIS-EXT Coated; Double-Convex Lens VIS-EXT 350-700nm
The 89-200 is a Double-Convex Lens, a type of Spherical Lens, sourced from Edmund Optics. This lens boasts a diameter of 50mm and a focal length of 50mm, making it a versatile choice for various optical applications. The lens is made from n-sf11 Schott, a high-index material often used in high-performance optical systems due to its excellent optical properties.
The lens features a VIS-EXT coating on both the front and back surfaces. This coating is specifically designed to extend the visible range, making it ideal for applications that require a broad spectral response, typically within the 350-700nm range. The coating also enhances the lens's durability and resistance to environmental factors, reducing the risk of degradation and ensuring long-lasting performance.
The geometry of the lens is carefully designed, with an inner radius of 0 and an outer radius of 0. The edge thickness measures 7.39mm, while the center thickness is 16mm. The back focal length (BFL) is 45.3mm, and the effective focal length (EFL) is 50mm. These specifications contribute to the lens's high-quality image formation and low distortion.