67-653 25mm Dia. x 100mm 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
- 100 mm
- BFL
- 98.95 mm
- R1
- 103 mm
- R2
- -103 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
67-653 25mm Dia. x 100mm FL; NIR II Coated; Double-Convex Lens NIR II 750-1550nm
The 67-653 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 100mm, making it suitable for a wide range of applications.
The lens is made from n-BK7 Schott, a popular optical glass 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 103mm and -103mm for the front and back surfaces, respectively. This geometry results in a high refractive power and a relatively short focal length.
The lens has an effective focal length (EFL) of 100mm, which is the distance from the lens's principal point to the focal point. The back focal length (BFL) is 98.95mm, which is the distance from the rear surface of the lens to the focal point. The lens has a thickness of 2.48mm at the edge and 4mm at the center.
The 67-653 lens is coated with Edmund Optics' NIR-II standard curve coating on both the front and back surfaces. This coating enhances the lens's performance in the near-infrared (NIR) spectrum, specifically between 750nm and 1550nm. The coating reduces surface reflections, improving transmission and increasing the lens's overall efficiency.