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89-135 6mm Dia. x 36mm FL; VIS-EXT Coated; Double-Convex Lens VIS-EXT 350-700nm

89-135 6mm Dia. x 36mm 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
6 mm
EFL
36 mm
BFL
35.33 mm
R1
36.87 mm
R2
-36.87 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

89-135 6mm Dia. x 36mm FL; VIS-EXT Coated; Double-Convex Lens VIS-EXT 350-700nm

The 89-135 is a double-convex lens, characterized by its spherical shape and circular base. This lens, sourced from Edmund Optics, boasts a diameter of 6mm and a focal length of 36mm. The lens's geometry is further defined by its edge thickness of 1.76mm and center thickness of 2mm, contributing to its overall profile.

The lens's material composition is Schott's n-BK7, a popular choice in the optical industry due to its excellent optical properties and versatility. The lens is coated with EDM VIS-EXT on both the front and back surfaces, enhancing its performance within the visible light spectrum, specifically between 350-700nm.

The EFL (Effective Focal Length) of the lens is 36mm, while the BFL (Back Focal Length) is 35.33mm. The first radius of curvature (R1) is 36.87mm, and the second radius of curvature (R2) is -36.87mm, indicating the lens's double-convex nature. The inner and outer radii are both 0mm, suggesting a uniform curvature throughout the lens.

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