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HO-BVL50-20B 50mm Dia. N-BK7 Double-Concave Lens; EFL=-1000mm BBAR 400-700nm

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
Product webpage
Holmarc Opto-Mechatronics products in the 3DOptix catalog

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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