HO-PVL25-08B 25mm Dia. N-BK7 Plano-Concave Lens; EFL=-200mm BBAR 400-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Concave)
- Brand
- Holmarc Opto-Mechatronics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- -200 mm
- R1
- -104.32 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-PVL25-08B 25mm Dia. N-BK7 Plano-Concave Lens; EFL=-200mm BBAR 400-700nm
This is a Plano-Concave Spherical Lens with a diameter of 25mm, manufactured by Holmarc Opto-Mechatronics. The lens has a center thickness of 2.5mm and an effective focal length (EFL) of -200mm, making it suitable for applications that require a negative focal length. The lens's concave surface has a radius of curvature (R1) of -104.323mm.
The lens is made of N-BK7 Schott glass, a popular material for optical elements due to its excellent optical properties and wide transparency range. The glass has an Abbe number of 64.17 and a refractive index of 1.5168 at 587.6nm, which is the wavelength used for the specification of the lens's properties.
The lens features broadband anti-reflection (BBAR) coating on both surfaces, designed for the 400-700nm wavelength range. This coating reduces reflection and increases transmission, enhancing the lens's performance in various applications. The BBAR coating is applied using the Holmarc's proprietary Hol-BBBAR 0 AOI process, ensuring high-quality and durable coating.