HO-BVL25-06B 25mm Dia. N-BK7 Double-Concave Lens; EFL=-150mm BBAR 400-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- Holmarc Opto-Mechatronics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- -150 mm
- R1
- -157.08 mm
- R2
- 157.08 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-BVL25-06B 25mm Dia. N-BK7 Double-Concave Lens; EFL=-150mm BBAR 400-700nm
This is the HO-BVL25-06B 25mm Dia. N-BK7 Double-Concave Lens, a high-quality optical component sourced from Holmarc Opto-Mechatronics. The lens is characterized by its spherical shape and concave-concave base design, making it suitable for a wide range of optical applications.
The lens has a diameter of 25mm and a center thickness of 2.5mm, providing a robust and compact design. The effective focal length (EFL) is -150mm, indicating that it is a diverging lens, which spreads out light rays. This can be useful in applications such as beam expansion or image reduction.
The lens is made from N-BK7, a popular optical glass known for its excellent optical properties. This material is characterized by a low refractive index and low dispersion, making it ideal for broadband applications. The lens is coated with BBAR (Broadband Anti-Reflection) coating, which reduces reflection and increases transmission across the 400-700nm wavelength range.
The coating on both the front and back surfaces of the lens is "hol bbbar 0 aoi", which is a type of BBAR coating specifically designed for Holmarc lenses. This coating provides high transmission and low reflectance, enhancing the performance of the lens in various applications.