G314323322 25.4 mm Dia. N-BK7 Plano-Concave Lens; EFL=-200mm 450-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Concave)
- Brand
- Qioptiq Photonics
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- -200 mm
- R1
- -104.41 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
G314323322 25.4 mm Dia. N-BK7 Plano-Concave Lens; EFL=-200mm 450-700nm
This is a Plano-Concave lens, a type of spherical lens, sourced from Qioptiq Photonics. The lens has a base shape of a circle and a diameter of 25.4 mm. The center thickness of the lens is 1.5 mm, and it has an effective focal length (EFL) of -200 mm, making it a negative lens. The radius of curvature for the concave surface is -104.41 mm.
The lens is made of N-BK7, a popular glass type in the optical industry, known for its excellent optical properties. The material has a refractive index that varies with wavelength, making it suitable for a wide range of applications. In this case, the lens is designed to work with a central wavelength of 588 nm.
The lens comes with anti-reflection coatings on both the front and back surfaces. The coating type is qio bbar arb2visnbk7, which is specifically designed to reduce surface reflections and increase transmission in the visible spectrum (450-700 nm). This coating ensures optimal performance and reduces the likelihood of unwanted reflections or ghost images.