68-017 25mm Dia. x -100mm FL; NIR II Coated; Double-Concave Lens 750-1550nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- -100 mm
- BFL
- -101.64 mm
- R1
- -104.2 mm
- R2
- 104.2 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
68-017 25mm Dia. x -100mm FL; NIR II Coated; Double-Concave Lens 750-1550nm
The 68-017 is a double-concave lens with a diameter of 25mm and a focal length of -100mm, making it a powerful tool for applications that require a highly curved, negative meniscus lens. This lens is sourced from Edmund Optics, a renowned vendor known for its high-quality optical components.
The lens is made from N-BK7 Schott, a popular optical glass due to its excellent optical properties, including a high Abbe number and low dispersion. This makes it an ideal choice for applications that require high image quality and low chromatic aberration.
The 68-017 features a double-concave geometry, with radii of curvature of -104.2mm and 104.2mm for the front and back surfaces, respectively. This geometry results in a high optical power, making it suitable for use in imaging systems, beam shaping, and other applications where a strong converging or diverging lens is required.
The lens is coated with Edmund Optics' NIR-II standard curve coating on both the front and back surfaces. This coating is designed to enhance the lens' performance in the near-infrared (NIR) region, specifically between 750nm and 1550nm. This makes the 68-017 an excellent choice for applications such as NIR spectroscopy, thermal imaging, and night vision.
In terms of dimensions, the lens has a thickness of 6.43mm at the edge and 5mm at the center. The inner and outer radii are both 0mm, indicating a uniform curvature across the lens surface.