67-655 25mm Dia. x 150mm FL; NIR II Coated; Double-Convex Lens NIR II 750-1550nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- 150 mm
- BFL
- 148.88 mm
- R1
- 154.52 mm
- R2
- -154.52 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
67-655 25mm Dia. x 150mm FL; NIR II Coated; Double-Convex Lens NIR II 750-1550nm
The 67-655 is a high-quality double-convex lens, designed and manufactured by Edmund Optics, a leading global provider of optical components. This lens boasts a 25mm diameter and a focal length of 150mm, making it suitable for a wide range of applications.
The lens is constructed from N-BK7 Schott glass, a popular material due to its excellent optical properties and versatility. The base shape is circular, and the lens features a double-convex geometry, with radii of curvature of 154.52mm and -154.52mm for the first and second surfaces, respectively. This geometry results in a high-quality image with minimal distortion.
The lens has an effective focal length (EFL) of 150mm and a back focal length (BFL) of 148.88mm. The edge thickness is 2.39mm, while the center thickness is 3.4mm, providing robustness and durability.
The 67-655 lens is coated with Edmund Optics' NIR-II standard curve coating on both the front and back surfaces. This coating enhances the lens' performance in the near-infrared (NIR) spectrum, specifically between 750nm and 1550nm. This makes the lens ideal for applications such as NIR imaging, spectroscopy, and other NIR-based technologies.