67-650 25mm Dia. x 40mm 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
- 40 mm
- BFL
- 38.21 mm
- R1
- 40.42 mm
- R2
- -40.42 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
67-650 25mm Dia. x 40mm FL; NIR II Coated; Double-Convex Lens NIR II 750-1550nm
This is a 25mm diameter, double-convex lens with a focal length of 40mm, specifically designed for use in the near-infrared (NIR) spectrum. The lens is sourced from Edmund Optics, a leading provider of optical components, and is currently in stock.
The lens is made from N-BK7 Schott glass, a popular material for optical elements due to its excellent optical properties and wide transparency range. The lens features a standard NIR-II coating on both the front and back surfaces, which enhances its performance in the NIR spectrum, particularly between 750nm and 1550nm.
The geometry of the lens includes an edge thickness of 1.34mm and a center thickness of 5.3mm. The front and back radii of curvature are 40.42mm and -40.42mm, respectively, resulting in a back focal length of 38.21mm. The lens has a spherical shape, which is a common design for optical elements due to its simplicity and effectiveness.