G311357525 31.5 mm Dia. N-BK7 Double-Convex Lens; EFL=70mm 725-1050nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Qioptiq Photonics
Properties
- Shape
- Circular
- Diameter
- 31.5 mm
- EFL
- 70 mm
- R1
- 72.86 mm
- R2
- -72.86 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
G311357525 31.5 mm Dia. N-BK7 Double-Convex Lens; EFL=70mm 725-1050nm
This is a high-quality double-convex lens from Qioptiq Photonics, designed for precision optical applications. The lens has a diameter of 31.5 mm and a focal length of 70 mm, making it suitable for a wide range of uses. The lens is made from N-BK7, a type of borosilicate glass known for its excellent optical properties, including a high refractive index and low dispersion.
The lens features a double-convex geometry, with both surfaces curved outwards. This design provides a high level of focusing power, making the lens ideal for use in imaging systems, beam shaping, and other applications where a tight focus is required. The lens has a thickness of 2.1 mm at the edge and 5.5 mm at the center, providing a robust and durable construction.
The lens is coated with Qioptiq's Bbar ARB2NIRnBK7 coating on both the front and back surfaces. This coating reduces reflection and increases transmission, enhancing the performance of the lens in the 725-1050 nm wavelength range. The lens is unmounted, providing flexibility in integration and alignment with other optical components.