63-639 15mm Dia. x 20mm 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
- 15 mm
- EFL
- 20 mm
- BFL
- 18.99 mm
- R1
- 30.6 mm
- R2
- -30.6 mm
Material
- Name
- N-SF11
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.7847141030246312
- λ
- 587.6 nm
- B1
- 1.73759695
- C1
- 0.013188707 μm2
- B2
- 0.313747346
- C2
- 0.0623068142 μm2
- B3
- 1.89878101
- C3
- 155.23629 μm2
63-639 15mm Dia. x 20mm FL; NIR I Coated; Double-Convex Lens NIR I 600-1050nm
The 63-639 is a high-quality double-convex lens, 15mm in diameter and 20mm in focal length, designed for use in the near-infrared spectrum. This lens is sourced from Edmund Optics, a leading vendor in the optical industry, and is available for purchase directly from their website.
The lens is made from n-SF11 Schott, a material known for its excellent optical properties in the near-infrared range. It features a double-convex geometry, with radii of curvature of 30.6mm for the first surface and -30.6mm for the second. This geometry results in a back focal length of 18.99mm and an effective focal length of 20mm.
The lens is coated with EDM NIR-I std curve on both the front and back surfaces. This coating is specifically designed to enhance performance in the near-infrared spectrum, providing improved transmission and reduced reflection. The coating covers the wavelength range of 600-1050nm, making this lens ideal for a wide range of near-infrared applications.