67-648 25mm 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
- 25 mm
- EFL
- 30 mm
- BFL
- 28.31 mm
- R1
- 39.22 mm
- R2
- -39.22 mm
Material
- Name
- N-SF5
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.6727030184452947
- λ
- 587.6 nm
- B1
- 1.52481889
- C1
- 0.011254756 μm2
- B2
- 0.187085527
- C2
- 0.0588995392 μm2
- B3
- 1.42729015
- C3
- 129.141675 μm2
67-648 25mm Dia. x 30mm FL; NIR II Coated; Double-Convex Lens NIR II 750-1550nm
This is a 25mm diameter by 30mm focal length double-convex lens, specifically designed for use in the near-infrared (NIR) spectrum. The lens is sourced from Edmund Optics and is currently in stock, as indicated by its web link status.
The lens is made from n-SF5 Schott, a material known for its excellent optical properties in the NIR range. It has a standard curvature coating on both the front and back surfaces, specifically the EDM NIR-II STD curve, which is designed to optimize performance in the NIR II spectrum, spanning 750-1550nm.
The lens geometry includes an edge thickness of 1.41mm and a center thickness of 5.5mm. The effective focal length (EFL) is 30mm, and the radii of curvature for the first and second surfaces are 39.22mm and -39.22mm, respectively. The back focal length (BFL) is 28.31mm. The lens does not have an inner or outer radius.