49-511 50mm Dia. x 200mm 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
- 50 mm
- EFL
- 200 mm
- BFL
- 198.33 mm
- R1
- 205.86 mm
- R2
- -205.86 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
49-511 50mm Dia. x 200mm FL; NIR I Coated; Double-Convex Lens NIR I 600-1050nm
The 49-511 is a high-quality double-convex lens, boasting a 50mm diameter and a focal length of 200mm. This lens is sourced from Edmund Optics, a renowned vendor known for their extensive range of optical elements. The lens is designed for use within the near-infrared (NIR) spectrum, specifically between 600 and 1050nm, making it ideal for a variety of applications within this range.
The lens is constructed from n-BK7 Schott, a popular optical glass due to its excellent optical properties and versatility. The lens features a standard curve coating on both the front and back surfaces, specifically Edmund Optics' NIR I coating. This coating enhances the lens' performance within the NIR spectrum, providing improved transmission and reduced reflection.
The geometry of the lens is meticulously designed, with an inner radius of 0 and an outer radius also of 0. The thickness at the edge of the lens is 2mm, while the center thickness is 5.05mm. The effective focal length (EFL) is 200mm, and the back focal length (BFL) is 198.33mm. The radii of curvature for the first and second surfaces are 205.86mm and -205.86mm respectively.
