HO-BVL25-40B 25mm Dia. N-BK7 Double-Concave Lens; EFL=-1000mm BBAR 400-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- Holmarc Opto-Mechatronics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- -1000 mm
- R1
- -1043.69 mm
- R2
- 1043.69 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5167984379050088
- λ
- 587.6 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
HO-BVL25-40B 25mm Dia. N-BK7 Double-Concave Lens; EFL=-1000mm BBAR 400-700nm
This is a HO-BVL25-40B 25mm diameter Spherical Lens, specifically a Double-Concave type, sourced from Holmarc Opto-Mechatronics. The lens is made of N-BK7 material, a high-quality glass commonly used in optical systems, specifically from Schott. The lens has a base shape of a circle and a spherical geometry.
The lens has a diameter of 25mm and a center thickness of 2.5mm. It has an effective focal length (EFL) of -1000mm, making it a powerful converging lens. The first radius of curvature (R1) is -1043.685969mm, and the second radius of curvature (R2) is 1043.685969mm. The lens does not have an inner or outer radius.
The lens is coated with BBAR (Broadband Anti-Reflection) coating, specifically designed for the wavelength of 587.6nm. The BBAR coating reduces reflection and increases transmission, enhancing the lens's performance in various applications. The coating is applied to both the front and back surfaces of the lens.
The lens is currently in stock and available for purchase. For more information, please refer to the vendor's website at https://www.holmarc.com/bi_concave_lenses.php.