89-240 12mm Dia. x 18mm 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
- 12 mm
- EFL
- 18 mm
- BFL
- 16.81 mm
- R1
- 18.01 mm
- R2
- -18.01 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
89-240 12mm Dia. x 18mm FL; YAG-BBAR Coated; Double-Convex Lens YAG-BBAR 500-1100nm
The 89-240 is a high-quality double-convex lens, 12mm in diameter and 18mm in focal length, sourced from the renowned optical components manufacturer, Edmund Optics. This lens is made from the premium grade N-BK7 glass from Schott, ensuring excellent optical performance and durability.
The lens features a YAG-BBAR coating on both the front and back surfaces, designed to enhance its performance within the wavelength range of 500-1100nm. This coating reduces reflection and increases transmission, making it ideal for applications that require high light transmission, such as imaging systems, beam shaping, and laser applications.
The geometry of the lens is meticulously designed with an inner radius of 0 and an outer radius of 0, providing a clear and focused image. The lens has a thickness of 1.42mm at the edge and 3.48mm at the center, and an effective focal length (EFL) of 18mm. The radii of curvature for the first and second surfaces are 18.01mm and -18.01mm, respectively, and the back focal length (BFL) is 16.81mm.