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89-139 9mm Dia. x 27mm FL; VIS-EXT Coated; Double-Convex Lens VIS-EXT 350-700nm

89-139 9mm Dia. x 27mm FL; VIS-EXT Coated; Double-Convex Lens VIS-EXT 350-700nm

Type
Lens
Subtype
Spherical Lens (Convex-Convex)
Brand
Edmund Optics
Product webpage
Edmund Optics products in the 3DOptix catalog

Properties

Shape
Circular
Diameter
9 mm
EFL
27 mm
BFL
26.08 mm
R1
27.43 mm
R2
-27.43 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

89-139 9mm Dia. x 27mm FL; VIS-EXT Coated; Double-Convex Lens VIS-EXT 350-700nm

The 89-139 is a high-quality spherical lens, boasting a double-convex design and a base shape of a circle. This lens, sourced from the reputable vendor Edmund Optics, is a versatile optical component with a diameter of 9mm and a focal length of 27mm. The lens's geometry is meticulously crafted, with an edge thickness of 2mm and a center thickness of 2.74mm, ensuring optimal performance.

The lens's effective focal length (EFL) is 27mm, making it suitable for a wide range of applications. The first radius of curvature (R1) is 27.43mm, while the second radius (R2) is -27.43mm, indicating its double-convex nature. The back focal length (BFL) is 26.08mm, providing additional flexibility in its use.

The lens is made from the renowned material N-BK7 Schott, a borosilicate crown glass known for its excellent optical properties. The wavelength for this lens is 587.6nm, which is in the visible light spectrum.

The lens features a VIS-EXT coating on both the front and back, enhancing its performance in the visible light spectrum (350-700nm). This coating ensures high transmission and low reflection, making it an ideal choice for applications that require clear, bright, and undistorted images.

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