84-381 3mm Dia. x -9 FL; VIS-NIR Coated; Plano-Concave Lens 400-1000nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Concave)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 3 mm
- EFL
- -9 mm
- BFL
- -9.56 mm
- R1
- -7.06 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
84-381 3mm Dia. x -9 FL; VIS-NIR Coated; Plano-Concave Lens 400-1000nm
The 84-381 is a 3mm diameter Plano-Concave Lens with a focal length of -9, sourced from the reputable optical components vendor, Edmund Optics. This lens is designed for use within the visible to near-infrared spectrum, spanning 400-1000nm, making it suitable for a wide range of optical applications.
The lens is crafted from n-sf11 Schott, a high-index glass with excellent optical properties. It features a spherical shape, a standard in optical systems due to its ease of manufacturing and versatility. The base shape is circular, contributing to its wide range of potential applications.
The geometry of the lens includes a thickness of 1.11mm at the edge and 1mm at the center, providing a robust structure while maintaining a sleek profile. The inner and outer radii are both 0, indicating a simple, straightforward design. The back focal length is -9.56mm, slightly longer than the focal length, which is typical for Plano-Concave lenses.
The lens is coated with edm visnir0sp2002000 on both the front and back surfaces. This coating is specifically designed for the visible to near-infrared spectrum, enhancing the lens's performance within this range.