G311339400 31.5 mm Dia. N-BK7 Double-Convex Lens; EFL=40mm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Qioptiq Photonics
Properties
- Shape
- Circular
- Diameter
- 31.5 mm
- EFL
- 40 mm
- R1
- 41.87 mm
- R2
- -41.87 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
G311339400 31.5 mm Dia. N-BK7 Double-Convex Lens; EFL=40mm
This is a G311339400 31.5 mm diameter N-BK7 double-convex lens, with a focal length (EFL) of 40mm. The lens is sourced from Qioptiq Photonics, a reputable vendor in the field of precision optics.
The lens is of the spherical type, specifically a convex-convex lens, and has a base shape of a circle. The geometry of the lens includes a diameter of 31.5mm, a thickness at the edge of 2.1mm, and a thickness at the center of 8.3mm. The inner and outer radii are both zero, and the radii of curvature are 41.867mm for the first surface and -41.867mm for the second surface.
The lens is made of N-BK7, a type of glass commonly used in optical applications due to its excellent optical properties. The glass is Schott branded, ensuring high quality and consistency.
The lens is designed to operate at a wavelength of 587.6nm. It comes with a coating on both the front and back surfaces, specifically a qio silver ragv 45 coating. This coating enhances the lens' performance by reducing reflection and increasing transmission.