89-210 4.5mm Dia. x 9mm 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
- 4.5 mm
- EFL
- 9 mm
- BFL
- 8.16 mm
- R1
- 8.88 mm
- R2
- -8.88 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
89-210 4.5mm Dia. x 9mm FL; YAG-BBAR Coated; Double-Convex Lens YAG-BBAR 500-1100nm
The 89-210 is a high-quality Double-Convex Lens, sourced from the renowned optical vendor, Edmund Optics. This lens, with a diameter of 4.5mm and a focal length of 9mm, is designed for use in a wide range of optical applications, particularly those requiring broadband anti-reflection (BBAR) coating.
The lens is made from Schott's n-BK7 glass, a popular material known for 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 8.88mm for both the front and rear surfaces. This geometry results in a high numerical aperture, making the lens suitable for high-resolution imaging applications.
The lens's front and back surfaces are coated with YAG-BBAR coating, designed for use in the 500-1100nm wavelength range. This coating significantly reduces surface reflections, thereby increasing transmission and improving overall system performance. The coating is applied using Edmund Optics' advanced deposition techniques, ensuring durability and resistance to environmental factors.
The lens's geometry also includes an edge thickness of 1.8mm and a center thickness of 2.38mm. The back focal length (BFL) is 8.16mm, and the effective focal length (EFL) is 9mm. The lens does not have any inner or outer radii.