45-873 12mm Dia. x 18mm FL; VIS-NIR Coated; Double-Convex Lens VIS-NIR 400-1000nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 12 mm
- EFL
- 18 mm
- BFL
- 16.81 mm
- R1
- 18.01 mm
- R2
- -18.01 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
45-873 12mm Dia. x 18mm FL; VIS-NIR Coated; Double-Convex Lens VIS-NIR 400-1000nm
The 45-873 is a high-quality double-convex lens, 12mm in diameter and 18mm in focal length, sourced from the renowned optical components vendor, Edmund Optics. This lens is designed for use within the visible to near-infrared spectrum, spanning 400-1000nm, making it suitable for a wide range of optical applications.
The lens boasts a base shape of a circle, with a 1.42mm edge thickness and a 3.48mm center thickness. The effective focal length (EFL) is 18mm, while the front and back radii of curvature are 18.01mm and -18.01mm respectively. The back focal length (BFL) is 16.81mm. The lens is made from the popular N-BK7 Schott glass, a material known for its excellent optical properties and versatility.
The 45-873 lens features a VIS-NIR coating, denoted as 'edm visnir0sp2002000', on both the front and back surfaces. This coating is designed to enhance the lens' performance within the visible to near-infrared spectrum, reducing surface reflections and improving transmission.