32-990 20mm Dia. x -20mm FL; Uncoated; Double-Concave Lens
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 20 mm
- EFL
- -20 mm
- BFL
- -20.55 mm
- R1
- -31.82 mm
- R2
- 31.82 mm
Material
- Name
- N-SF11
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.7847141030246312
- λ
- 587.6 nm
- B1
- 1.73759695
- C1
- 0.013188707 μm2
- B2
- 0.313747346
- C2
- 0.0623068142 μm2
- B3
- 1.89878101
- C3
- 155.23629 μm2
32-990 20mm Dia. x -20mm FL; Uncoated; Double-Concave Lens
The 32-990 is a spherical lens with a base shape of a circle, sourced from the reputable vendor, Edmund Optics. This lens falls under the category of a Spherical Lens (Concave-Concave) and is uncoated. The lens has a diameter of 20mm and a thickness at the edge of 5.03mm, while the center thickness is 2mm. The effective focal length (EFL) of this lens is -20mm, making it a double-concave lens.
The lens's first radius of curvature (R1) is -31.82mm, and the second radius of curvature (R2) is 31.82mm. The back focal length (BFL) is -20.55mm. The lens's inner and outer radii are both 0mm. The lens is made of n-sf11 Schott material, a high-index glass often used in optical systems that require high numerical aperture and excellent optical performance.
This lens is designed to operate at a wavelength of 587.6nm. The provided web link allows users to access more information about the lens and its availability in stock. This detailed description should assist users in understanding the lens's properties and making informed decisions when selecting optical components with similar specifications.
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