67-490-INK 10.0mm Dia. x 50.0mm 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
- 10 mm
- EFL
- 40 mm
- BFL
- 38.02 mm
- R1
- 20.67 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
67-490-INK 10.0mm Dia. x 50.0mm FL; NIR II; Inked; Plano-Convex Lens NIR II 750-1550nm
The 67-490-INK is a Plano-Convex lens, a type of spherical lens, sourced from Edmund Optics. This lens, with a diameter of 10.0mm, is designed for use in the Near-Infrared II (NIR II) spectrum, specifically for wavelengths between 750nm and 1550nm. The lens is coated with the EDM NIR-II STD curve on both the front and back surfaces, enhancing its performance in the NIR II range.
The lens has a thickness of 2.39mm at the edge and 3.0mm at the center. It boasts an effective focal length (EFL) of 40mm and a radius of curvature (R1) of 20.67mm. The back focal length (BFL) is 38.02mm, and the lens does not have any inner or outer radius specified.
This lens is made from N-BK7 Schott, a popular optical glass due to its excellent optical properties and relatively low cost. The lens is inked, which is a process where a dye is applied to the edge of the lens to indicate its orientation. This is particularly useful during assembly to ensure the correct orientation of the lens.
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