49-485 18mm Dia. x 27mm 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
- 18 mm
- EFL
- 27 mm
- BFL
- 25.25 mm
- R1
- 27.08 mm
- R2
- -27.08 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
49-485 18mm Dia. x 27mm FL; NIR I Coated; Double-Convex Lens NIR I 600-1050nm
The 49-485 is a high-quality double-convex lens, 18mm in diameter and 27mm in focal length, sourced from the renowned optical components vendor, Edmund Optics. This lens is designed for use within the near-infrared (NIR) spectrum, specifically between 600 and 1050 nanometers, making it suitable for a wide range of applications in this wavelength range.
The lens is constructed from N-BK7 Schott glass, a popular material in optical systems due to its excellent optical properties and versatility. The double-convex geometry, characterized by two outwardly curved surfaces, is designed to provide a wide field of view and low distortion, making it ideal for imaging applications.
The 49-485 lens features a standard coating on both the front and back surfaces, specifically the EDM NIR-I std curve coating. This coating is designed to enhance the lens' performance within the NIR spectrum, improving transmission and reducing unwanted reflections.
The lens has a center thickness of 5.5mm and an edge thickness of 2.42mm, providing a robust and durable design. The effective focal length (EFL) is 27mm, and the radii of curvature for the first and second surfaces are 27.08mm and -27.08mm, respectively. The back focal length (BFL) is 25.25mm.