67-618 10mm Dia. x 30mm 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
- 10 mm
- EFL
- 30 mm
- BFL
- 29.17 mm
- R1
- 30.58 mm
- R2
- -30.58 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
67-618 10mm Dia. x 30mm FL; NIR II Coated; Double-Convex Lens NIR II 750-1550nm
The 67-618 is a high-quality double-convex lens, designed and manufactured by Edmund Optics, a leading global provider of optical components. This lens boasts a 10mm diameter and a focal length of 30mm, 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 of the lens is circular, and it features a double-convex geometry, with radii of curvature of 30.58mm and -30.58mm for the first and second surfaces, respectively. This geometry results in a back focal length of 29.17mm and an effective focal length of 30mm.
The lens is coated with Edmund Optics' standard NIR-II coating on both the front and back surfaces. This coating is specifically designed for the near-infrared (NIR) spectrum, covering the wavelength range of 750-1550nm. It enhances the lens's performance in the NIR region, providing improved transmission and reduced reflection.
The lens has a thickness of 1.68mm at the edge and 2.5mm at the center. The inner and outer radii are 0mm, indicating a uniform curvature across the lens surface.