G313337525 25.4 mm Dia. N-BK7 Double-Concave Lens; EFL=-50mm 725-1050nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- Qioptiq Photonics
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- -50 mm
- R1
- -52.33 mm
- R2
- 52.33 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
G313337525 25.4 mm Dia. N-BK7 Double-Concave Lens; EFL=-50mm 725-1050nm
This is a G313337525 double-concave lens, sourced from Qioptiq Photonics, featuring a 25.4 mm diameter and a center thickness of 1.5 mm. The lens is designed with a negative focal length (EFL) of -50mm, making it suitable for applications that require image inversion or reduction.
The lens is made of N-BK7, a popular borosilicate glass known for its excellent optical properties, including a high Abbe number and low dispersion. This makes it an ideal choice for applications that require high image quality and color correction, such as imaging systems, beam shaping, and laser applications.
The lens features a double-concave geometry, with radii of curvature of -52.33mm for the front surface and 52.33mm for the back surface. This geometry is designed to diverge light, making it suitable for use as a diverging lens or a field lens in imaging systems.
The lens is coated with Qioptiq's BBAR ARB2NIRNBK7 coating on both the front and back surfaces. This coating is designed to reduce reflection and increase transmission across the 725-1050nm wavelength range, making it suitable for use in near-infrared (NIR) applications.