89-256 18mm Dia. x 36mm FL; YAG-BBAR Coated; Double-Convex Lens YAG-BBAR 500-1100nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 18 mm
- EFL
- 36 mm
- BFL
- 34.59 mm
- R1
- 36.6 mm
- R2
- -36.6 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
89-256 18mm Dia. x 36mm FL; YAG-BBAR Coated; Double-Convex Lens YAG-BBAR 500-1100nm
The 89-256 is a high-quality double-convex lens, boasting an 18mm diameter and a focal length of 36mm. This lens is sourced from the reputable optical vendor, Edmund Optics, and is currently in stock, as indicated by its weblink status.
The lens is constructed from the high-grade material, n-BK7 Schott, which is renowned for its excellent optical properties. The geometry of the lens is meticulously designed, with a thickness of 2.55mm at the edge and 4.8mm at the center, ensuring optimal light transmission and minimal distortion.
The lens features a double-convex shape, with radii of curvature of 36.6mm and -36.6mm for the first and second surfaces, respectively. This design results in a back focal length of 34.59mm, contributing to the lens's superior performance.
The 89-256 is coated with YAG-BBAR, a highly durable and efficient coating that operates within the wavelength range of 500-1100nm. This coating enhances the lens's transmission capabilities and reduces unwanted reflections, making it an ideal choice for various applications.