G311347000 40 mm Dia. N-BK7 Double-Convex Lens; EFL=250mm Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Qioptiq Photonics
Properties
- Shape
- Circular
- Diameter
- 40 mm
- EFL
- 250 mm
- R1
- 260.39 mm
- R2
- -260.39 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
G311347000 40 mm Dia. N-BK7 Double-Convex Lens; EFL=250mm Uncoated
The G311347000 is a 40 mm diameter, double-convex lens made from N-BK7 glass, a popular material 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 250mm, 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 2mm, while the center thickness is 3.5mm. The radii of curvature for the first and second surfaces are 260.39mm and -260.39mm, respectively. The lens's inner and outer radii are both 0mm.
The lens is made from N-BK7 Schott glass, a crown glass with a refractive index of 1.5168 at 587.6nm. This glass is known for its low dispersion and excellent homogeneity, making it a popular choice for many optical applications.
The lens is uncoated, meaning it does not have any anti-reflective coatings. While this can lead to some reflection loss, it also means the lens is more durable and less prone to damage.
This lens is currently in stock and can be purchased directly from the Qioptiq Photonics website. The provided weblink leads directly to the product page for easy access.