67-539-INK 20.0mm Dia. x 80.0mm FL; NIR II; Inked; Plano-Convex Lens NIR II 750-1550nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 20 mm
- EFL
- 50 mm
- BFL
- 47.87 mm
- R1
- 25.84 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
67-539-INK 20.0mm Dia. x 80.0mm FL; NIR II; Inked; Plano-Convex Lens NIR II 750-1550nm
The 67-539-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 in the Near-Infrared II (NIR II) spectrum, specifically for wavelengths between 750 and 1550nm.
The lens features a front and back coating of edm nir-ii std curve, which is specifically designed for use in the NIR II spectrum. This coating enhances the lens' performance in this region, providing superior image quality and light transmission.
The geometry of the lens includes a thickness of 1.22mm at the edge and 3.23mm at the center. The effective focal length (EFL) of the lens is 50mm, and the radius of curvature (R1) is 25.84mm. The back focal length (BFL) is 47.87mm, and the lens does not have any inner or outer radius.
The lens is made from n-bk7 schott, a popular optical material known for its excellent optical properties and versatility. This material is widely used in various optical applications due to its high Abbe number, low dispersion, and excellent transmission in the visible and NIR regions.
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