HO-PVL25-40B 25mm Dia. N-BK7 Plano-Concave Lens; EFL=-1000mm BBAR 400-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Concave)
- Brand
- Holmarc Opto-Mechatronics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- -1000 mm
- R1
- -521.62 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-PVL25-40B 25mm Dia. N-BK7 Plano-Concave Lens; EFL=-1000mm BBAR 400-700nm
This is a Plano-Concave Spherical Lens, type HO-PVL25-40B, manufactured by Holmarc Opto-Mechatronics. The lens has a circular base shape with a diameter of 25mm and a center thickness of 2.5mm. The effective focal length (EFL) of this lens is -1000mm, making it a negative or diverging lens.
The lens is made of N-BK7, a popular optical glass from Schott, known for its excellent optical properties and high damage threshold. The lens's inner and outer radii are both zero, indicating a plano-concave shape.
This lens is designed for use in the wavelength range of 587.6nm, which is near the center of the visible light spectrum. It comes with a BBAR (Broadband Anti-Reflection) coating, specifically designed for the 400-700nm range, which enhances its transmission characteristics and reduces surface reflections.
The BBAR coating on both the front and back surfaces of the lens is Holmarc's BBAR 0 AOI coating, which is optimized for zero angle of incidence. This coating provides high transmission and low reflection across the entire specified wavelength range.