68-000 25mm Dia. x -35 FL; NIR II Coated; Plano-Concave Lens 750-1550nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Concave)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- -35 mm
- BFL
- -36.96 mm
- R1
- -27.47 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
68-000 25mm Dia. x -35 FL; NIR II Coated; Plano-Concave Lens 750-1550nm
The 68-000 is a 25mm diameter Plano-Concave lens with a focal length of -35, sourced from the renowned optical components manufacturer, Edmund Optics. This lens is designed for use within the near-infrared spectrum, specifically between 750nm and 1550nm, making it ideal for applications such as night vision, thermal imaging, and optical communication systems.
The lens is constructed from n-SF11 Schott glass, a material known for its excellent optical properties and durability. The base shape of the lens is circular, with a thickness of 6.36mm at the edge and 3.5mm at the center. The inner and outer radii are both zero, indicating a uniform curvature throughout the lens.
The 68-000 lens features a standard NIR-II coating on both the front and back surfaces. This coating is designed to enhance the lens' performance within the near-infrared spectrum, reducing surface reflections and improving transmission. The coating is part of Edmund Optics' standard curve, ensuring consistent performance across different lenses.
