67-622 12mm Dia. x 12mm 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
- 12 mm
- EFL
- 12 mm
- BFL
- 10.79 mm
- R1
- 15.34 mm
- R2
- -15.34 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
67-622 12mm Dia. x 12mm FL; NIR II Coated; Double-Convex Lens NIR II 750-1550nm
This is a 12mm diameter by 12mm 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. It is made from n-SF5 Schott material, a popular choice for its high transmission and low autofluorescence in the NIR range.
The lens features a standard curve coating on both the front and back surfaces, specifically the EDM NIR-II STD curve. This coating is designed to enhance the lens' performance in the NIR II region, specifically between 750nm and 1550nm.
The lens has a center thickness of 3.85mm and an edge thickness of 1.41mm, providing a robust structure. The front and back focal lengths are 15.34mm and -15.34mm respectively, indicating a strongly converging lens. The back focal length is measured from the back surface of the lens, hence the negative sign.
The lens is spherical in shape, with both surfaces curved to the same radius. This design provides a wide field of view and low distortion, making it suitable for a variety of imaging applications. The lens has no inner or outer radius, indicating a uniform curvature across the entire surface.
