HO-BVL50-20B 50mm 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
- 50 mm
- EFL
- -1000 mm
- R1
- -1043.76 mm
- R2
- 1043.76 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-BVL50-20B 50mm Dia. N-BK7 Double-Concave Lens; EFL=-1000mm BBAR 400-700nm
This is a HO-BVL50-20B 50mm diameter N-BK7 double-concave lens, featuring an effective focal length (EFL) of -1000mm. The lens is sourced from Holmarc Opto-Mechatronics, a reputable vendor in the optical industry.
The lens is designed with a base shape of a circle and is constructed with N-BK7 Schott glass, a popular choice for its high refractive index and low dispersion. The geometry of the lens includes a center thickness of 2.5mm, a first radius (R1) of -1043.762884mm, and a second radius (R2) of 1043.762884mm. The inner and outer radii are both zero.
The lens is coated with BBAR (Broadband Anti-Reflection) coating, optimized for the wavelength of 587.6nm. The BBAR coating is applied to both the front and back surfaces, reducing reflection and enhancing transmission across the spectral range of 400-700nm.
This double-concave lens is a spherical type, suitable for a wide range of optical applications. It is currently in stock and available for immediate purchase. For more information, please refer to the vendor's website at https://www.holmarc.com/bi_concave_lenses.php.
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