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89-255 18mm Dia. x 27mm FL; YAG-BBAR Coated; Double-Convex Lens YAG-BBAR 500-1100nm

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
Product webpage
Edmund Optics products in the 3DOptix catalog

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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