89-249 15mm Dia. x 25mm 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
- 15 mm
- EFL
- 25 mm
- BFL
- 23.82 mm
- R1
- 25.23 mm
- R2
- -25.23 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
89-249 15mm Dia. x 25mm FL; YAG-BBAR Coated; Double-Convex Lens YAG-BBAR 500-1100nm
This is a high-quality double-convex lens from the renowned optical vendor, Edmund Optics. The lens, identified as 89-249, boasts a diameter of 15mm and a focal length of 25mm, making it a versatile choice for various optical applications.
The lens is crafted from the esteemed N-BK7 Schott glass, a material known for its excellent optical properties, including high homogeneity, low auto-fluorescence, and superior transmittance across a wide spectrum. This particular lens is designed to operate optimally at a wavelength of 587.6nm.
The lens surfaces are coated with YAG-BBAR, a broadband anti-reflection coating that enhances transmission and reduces surface reflections. This coating is effective within the 500-1100nm wavelength range, making the lens suitable for a broad spectrum of applications.
The lens geometry is another notable feature. It has an edge thickness of 1.22mm and a center thickness of 3.5mm, with radii of curvature of 25.23mm for the first surface and -25.23mm for the second surface. The back focal length is 23.82mm, and both the inner and outer radii are 0mm, indicating a circular shape.
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