G313205400 22.4 mm Dia. N-BK7 Double-Concave Lens; EFL=-20mm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- Qioptiq Photonics
Properties
- Shape
- Circular
- Diameter
- 22.4 mm
- EFL
- -20 mm
- R1
- -20.83 mm
- R2
- 20.83 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
G313205400 22.4 mm Dia. N-BK7 Double-Concave Lens; EFL=-20mm
This is a G313205400 22.4 mm Dia. N-BK7 Double-Concave Lens, a high-quality optical component sourced from Qioptiq Photonics. The lens, which has a double-concave structure, is designed for use with a wavelength of 588 nm and is made from N-BK7 glass, a popular choice for its excellent optical properties.
The lens has a diameter of 22.4 mm and a center thickness of 1.5 mm. The effective focal length (EFL) is -20 mm, indicating that it is a diverging lens. The first and second radii of curvature (R1 and R2) are -20.833 mm and 20.833 mm, respectively, which are symmetrical, contributing to the double-concave shape. The inner and outer radii are both 0, indicating that the lens has a uniform curvature.
The lens is coated with Qio Silver RAGV 45 on both the front and back surfaces, which is designed to enhance its optical performance. The lens is unmounted, providing flexibility for users to mount it according to their specific requirements.
The item data indicates that this lens is in stock and available for purchase. For more information, please refer to the provided weblink.