G313206329 22.4 mm Dia. N-BK7 Double-Concave Lens; EFL=-30mm 1064nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- Qioptiq Photonics
Properties
- Shape
- Circular
- Diameter
- 22.4 mm
- EFL
- -30 mm
- R1
- -31.4 mm
- R2
- 31.4 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
G313206329 22.4 mm Dia. N-BK7 Double-Concave Lens; EFL=-30mm 1064nm
This is a G313206329 double-concave lens, sourced from the renowned optical components manufacturer, Qioptiq Photonics. The lens boasts a 22.4 mm diameter and a center thickness of 1.5 mm, making it a robust and compact solution for various optical applications.
The lens is made of N-BK7, a popular borosilicate crown glass known for its excellent optical properties, including a high refractive index and low dispersion. This material makes the lens suitable for use across a wide range of wavelengths, with the item data specifying a wavelength of 588 nm.
The lens features a double-concave geometry, with radii of curvature of -31.396 mm for the front surface and 31.396 mm for the rear surface. This geometry results in a negative focal length of -30 mm (EFL), making it ideal for use in applications requiring image reduction or beam convergence.
The lens comes with anti-reflective coatings on both the front and back surfaces, specifically the Qio HP Nbar ARHS-YAG coating. This coating is designed to minimize reflection losses at the YAG laser wavelength of 1064 nm, thereby enhancing the overall transmission efficiency of the lens.
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