G311335331 31.5 mm Dia. N-BK7 Double-Convex Lens; EFL=130mm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Qioptiq Photonics
Properties
- Shape
- Circular
- Diameter
- 31.5 mm
- EFL
- 130 mm
- R1
- 134.32 mm
- R2
- -134.32 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
G311335331 31.5 mm Dia. N-BK7 Double-Convex Lens; EFL=130mm
This is a high-quality spherical lens from Qioptiq Photonics, designed with a symmetric convex-convex shape and a circular base. The lens has a diameter of 31.5 mm and a thickness of 2.2 mm at the edge, increasing to 4 mm at the center. The effective focal length (EFL) of this lens is 130 mm, making it suitable for a wide range of optical applications.
The lens is made from N-BK7, a popular glass type known for its excellent optical properties. This material is characterized by a refractive index of 1.5168 at the wavelength of 587.6 nm, which is the reference wavelength used in the item data.
The lens features a broadband anti-reflection coating on both the front and back surfaces. This coating, identified as 'qio al ralvis aoi 45', is designed to minimize reflection and increase transmission across a wide spectral range.
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