46-290 18mm Dia. x 20mm FL; UV-AR Coated; UV Double-Convex Lens UV-AR 250-425nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 18 mm
- EFL
- 20 mm
- BFL
- 17.18 mm
- R1
- 17.05 mm
- R2
- -17.05 mm
Material
- Name
- Fused Silica
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.458462342053241
- λ
- 587.6 nm
- B1
- 0.6961663
- C1
- 0.00467914825849 μm2
- B2
- 0.4079426
- C2
- 0.013512063073959999 μm2
- B3
- 0.8974794
- C3
- 97.934002537921 μm2
46-290 18mm Dia. x 20mm FL; UV-AR Coated; UV Double-Convex Lens UV-AR 250-425nm
The 46-290 is a UV-AR coated, UV double-convex lens, boasting an 18mm diameter and a 20mm focal length. This lens, sourced from the reputable vendor Edmund Optics, is a spherical lens with a convex-convex base shape and a circular geometry.
The lens's geometry is characterized by a 2.5mm thickness at the edge, a 7.64mm thickness at the center, and an effective focal length (EFL) of 20mm. The first radius of curvature (R1) is 17.05mm, while the second radius of curvature (R2) is -17.05mm, and the back focal length (BFL) is 17.18mm. The lens's inner and outer radii are both zero.
The lens is constructed from fused silica material, identified as mal-1965 in the Material ID. It is designed to operate at a wavelength of 587.6nm. The lens features UV-AR coating on both the front and back surfaces, adhering to the standard curve as defined by Edmund Optics.
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