G311382000 12.7 mm Dia. N-BK7 Double-Convex Lens; EFL=20mm Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Qioptiq Photonics
Properties
- Shape
- Circular
- Diameter
- 12.7 mm
- EFL
- 20 mm
- R1
- 20.1 mm
- R2
- -20.1 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
G311382000 12.7 mm Dia. N-BK7 Double-Convex Lens; EFL=20mm Uncoated
The G311382000 is a 12.7 mm diameter, double-convex lens made from N-BK7 glass, a popular choice in the optical industry due to its excellent optical properties. This lens, sourced from Qioptiq Photonics, is uncoated and has an effective focal length (EFL) of 20mm, making it suitable for a wide range of applications.
The lens's geometry is characterized by its base shape, which is circular, and its thickness. The edge thickness is 0.9mm, while the center thickness is 3mm. The radii of curvature for the first and second surfaces are 20.097mm and -20.097mm, respectively. The lens does not have any inner or outer radius, indicating a symmetrical design.
The lens is made from n-BK7 Schott, a type of borosilicate glass known for its low dispersion and high Abbe number. This makes it an excellent choice for applications that require high image quality and color correction, such as imaging systems, beam shaping, and laser applications.
The lens is designed to operate at a wavelength of 587.6nm. It is uncoated, which means it does not have any anti-reflective coatings. While this may result in higher reflective losses, it also means the lens is more versatile and can be used in a wider range of applications without the need for additional coatings.