G311351322 31.5 mm Dia. N-BK7 Double-Convex Lens; EFL=50mm 450-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Qioptiq Photonics
Properties
- Shape
- Circular
- Diameter
- 31.5 mm
- EFL
- 50 mm
- R1
- 52.33 mm
- R2
- -52.33 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
G311351322 31.5 mm Dia. N-BK7 Double-Convex Lens; EFL=50mm 450-700nm
This is a high-quality double-convex lens from Qioptiq Photonics, designed for use in the visible light spectrum, specifically between 450 and 700nm. The lens has a diameter of 31.5mm and an effective focal length (EFL) of 50mm, making it suitable for a wide range of optical applications.
The lens is made from N-BK7, a popular borosilicate glass known for its excellent optical properties. This material is characterized by a low coefficient of thermal expansion, making it resistant to thermal shock. The lens features a double-convex geometry, with radii of curvature of 52.33mm on both sides. This geometry is designed to minimize spherical aberration and provide superior image quality.
The lens has a thickness of 2.1mm at the edge and 7mm at the center. The edge thickness ensures the lens's durability and resistance to mechanical stress, while the center thickness contributes to the lens's optical performance.
The lens is coated with Qio Bbar Arb2visnbk7 on both the front and back surfaces. This coating is designed to reduce reflection and improve transmission in the visible light spectrum, further enhancing the lens's performance.