33-398 25mm 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
- 25 mm
- EFL
- 200 mm
- BFL
- 198.35 mm
- R1
- 205.87 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
33-398 25mm Dia. x 200mm FL; NIR I Coated; Double-Convex Lens NIR I 600-1050nm
The 33-398 is a high-quality double-convex lens, boasting a 25mm diameter and a focal length of 200mm. This lens is specifically designed for use within the near-infrared (NIR) spectrum, with a wavelength range of 600-1050nm, making it ideal for a wide range of applications in this field.
The lens is constructed from Schott's n-BK7 glass, a material renowned for its excellent optical properties, including a high refractive index and low dispersion. This ensures that the lens delivers sharp, clear images with minimal chromatic aberration.
The 33-398 is coated with Edmund Optics' NIR I standard curve coating on both the front and back surfaces. This coating is designed to enhance the lens' performance within the NIR spectrum, improving transmission and reducing reflection. The coating also provides protection against environmental factors, helping to ensure the longevity of the lens.
The geometry of the lens is carefully designed to optimize its performance. The radius of curvature for the first surface is 205.865mm, while for the second surface it is -205.865mm. The back focal length is 198.35mm, and the thickness at the edge is 4.24mm, while at the center it is 5mm. The lens is circular in shape, with an inner radius and outer radius of 0mm.