G052402525 12.7 mm Dia. N-BK7 Mounted Double-Concave Lens; EFL=-20mm 725-1050nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- Qioptiq Photonics
Properties
- Shape
- Circular
- Diameter
- 12.7 mm
- EFL
- -20 mm
- R1
- -20.98 mm
- R2
- 20.98 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5167817367777034
- λ
- 588 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
G052402525 12.7 mm Dia. N-BK7 Mounted Double-Concave Lens; EFL=-20mm 725-1050nm
This is a G052402525 model lens from Qioptiq Photonics, a renowned vendor in the field of precision optics. The lens is mounted and features a base shape of a circle with a diameter of 12.7 mm. It is a double-concave spherical lens, meaning it has two concave surfaces. The center thickness of the lens is 1.5 mm.
The effective focal length (EFL) of this lens is -20 mm, indicating that it is a diverging lens, causing incoming light rays to spread out. This makes it suitable for applications such as beam expansion or divergence.
The lens is made of N-BK7, a type of borosilicate glass known for its excellent optical properties, including a high Abbe number and low dispersion. This makes it an ideal material for broadband anti-reflection coatings, which this lens features on both the front and back surfaces. The coating is Qio Bbar Arb2nirnbk7, designed to reduce surface reflections and increase transmission across the spectral range of 725-1050 nm.
Please note that the inner and outer radii of the lens are both 0, indicating that the lens has no curvature at its edges. This is a common feature in precision optics, as it helps to minimize optical aberrations.
For more information, including current availability and pricing, please refer to the vendor's website using the provided weblink.