89-255 18mm Dia. x 27mm 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
- 27 mm
- BFL
- 25.25 mm
- R1
- 27.08 mm
- R2
- -27.08 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
89-255 18mm Dia. x 27mm FL; YAG-BBAR Coated; Double-Convex Lens YAG-BBAR 500-1100nm
The 89-255 is a high-quality double-convex lens, boasting a diameter of 18mm and a focal length of 27mm. This lens is sourced from the renowned optical vendor, Edmund Optics, and is currently in stock, ready for immediate use.
The lens is constructed from the high-grade material, n-BK7 Schott, ensuring excellent optical performance. It features a YAG-BBAR coating on both the front and back surfaces, enhancing its transmission capabilities within the wavelength range of 500-1100nm. This makes it an ideal choice for applications that require high transmission in the near-infrared spectrum.
The geometry of the lens is meticulously designed, with an edge thickness of 2.42mm and a center thickness of 5.5mm. The lens's effective focal length (EFL) is 27mm, and it has a back focal length (BFL) of 25.25mm. The first and second radii of curvature are 27.08mm and -27.08mm, respectively.
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