HO-BVL50-04B 50mm Dia. N-BK7 Double-Concave Lens; EFL=-200mm BBAR 400-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- Holmarc Opto-Mechatronics
Properties
- Shape
- Circular
- Diameter
- 50 mm
- EFL
- -200 mm
- R1
- -209.58 mm
- R2
- 209.58 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-BVL50-04B 50mm Dia. N-BK7 Double-Concave Lens; EFL=-200mm BBAR 400-700nm
This is a HO-BVL50-04B 50mm diameter N-BK7 double-concave lens, featuring an effective focal length (EFL) of -200mm and broadband anti-reflection (BBAR) coating for the 400-700nm wavelength range. The lens is sourced from Holmarc Opto-Mechatronics, a reputable vendor known for its high-quality optical components.
The lens is designed with a spherical shape, featuring a base shape of a circle. Its concave-concave design is characterized by two radii: r1 at -209.583664 and r2 at 209.583664. The lens has a center thickness of 2.5mm and an inner radius of 0mm, while the outer radius is also 0mm.
The lens material is N-BK7, a popular choice in the optical industry due to its excellent optical properties. This specific lens is designed for use with a central wavelength of 587.6nm.
The lens features BBAR coating on both the front and back surfaces, which significantly reduces reflection and increases transmission in the specified wavelength range. This coating is identified as "hol bbbar 0 aoi" in the item data.
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