49-488 20mm Dia. x 40mm FL; NIR I Coated; Double-Convex Lens NIR I 600-1050nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 20 mm
- EFL
- 40 mm
- BFL
- 38.44 mm
- R1
- 40.67 mm
- R2
- -40.67 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
49-488 20mm Dia. x 40mm FL; NIR I Coated; Double-Convex Lens NIR I 600-1050nm
This is a 20mm diameter, double-convex lens with a focal length of 40mm, sourced from Edmund Optics. The lens is made from the material n-BK7 Schott, a popular choice for its high refractive index and low dispersion. The lens features a standard NIR I coating on both the front and back surfaces, designed for the spectral range of 600-1050nm. This coating enhances the lens's performance in the near-infrared region, improving transmission and reducing reflection.
The lens has a center thickness of 5.3mm and an edge thickness of 2.8mm, providing a robust structure. The radii of curvature for the first and second surfaces are 40.67mm and -40.67mm, respectively, indicating a strongly converging lens. The back focal length is 38.44mm, and the effective focal length is the specified 40mm. The lens is spherical in shape, ensuring a consistent curvature across the surface.
This lens is suitable for a wide range of applications that require high-quality imaging in the near-infrared region, such as night vision, thermal imaging, and scientific research. It is currently in stock, ready for immediate use. For more information, please refer to the vendor's website provided.