49-490 25mm Dia. x 35mm 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
- 25 mm
- EFL
- 35 mm
- BFL
- 32.81 mm
- R1
- 35.09 mm
- R2
- -35.09 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
49-490 25mm Dia. x 35mm FL; NIR I Coated; Double-Convex Lens NIR I 600-1050nm
The 49-490 is a high-quality double-convex lens, designed and manufactured by Edmund Optics, a leading global supplier of optical components. This lens boasts a 25mm diameter and a focal length of 35mm, making it suitable for a wide range of applications.
The lens is constructed 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 35.09mm for the first surface and -35.09mm for the second surface. This geometry results in a back focal length of 32.81mm and an effective focal length of 35mm.
The lens is coated with Edmund Optics' NIR I standard curve coating on both the front and back surfaces. This coating is specifically designed for use in the near-infrared region, providing high transmission in the 600-1050nm wavelength range. This makes the lens ideal for applications such as thermal imaging, spectroscopy, and other NIR-based technologies.
The lens has a thickness of 2mm at the edge and 6.6mm at the center. The outer radius is 0mm, and the inner radius is also 0mm, indicating that the lens is not meniscus-shaped.
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