47-890-INK 20.0mm Dia. x 80.0mm FL; VIS 0deg; Inked; Plano-Convex Lens VIS 0° 425-675nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 20 mm
- EFL
- 80 mm
- BFL
- 78.45 mm
- R1
- 41.48 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
47-890-INK 20.0mm Dia. x 80.0mm FL; VIS 0deg; Inked; Plano-Convex Lens VIS 0° 425-675nm
The 47-890-INK is a Plano-Convex lens, a type of spherical lens, sourced from Edmund Optics. This lens, with a diameter of 20.0mm, is designed for use within the visible light spectrum, specifically at a wavelength of 587.6nm. The lens has a front and back coating of edm vis-0 std curve, providing standard performance and durability.
The lens's geometry is characterized by its edge thickness of 1.13mm and center thickness of 2.35mm. It has an effective focal length (EFL) of 80.0mm, which is the distance from the lens's center to the focal point when the lens is imaging an object at infinity. The lens's front surface has a radius of curvature (R1) of 41.48mm, and its back focal length (BFL) is 78.45mm.
The lens is made from n-bk7 schott, a popular optical glass due to its excellent optical properties and relatively low cost. The lens's base shape is circular, and its shape is spherical. The weblink provided leads to the product page on the Edmund Optics website, where users can find more information and check the product's availability.
