49-315-INK 9 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=27mm VIS-NIR 400-1000nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 9 mm
- EFL
- 27 mm
- R1
- 15.36 mm
- R2
- -12.01 mm
Material 1
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5185223876207927
- λ
- 550 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
Material 2
- Name
- N-SF5
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.6771143911586193
- λ
- 550 nm
- B1
- 1.52481889
- C1
- 0.011254756 μm2
- B2
- 0.187085527
- C2
- 0.0588995392 μm2
- B3
- 1.42729015
- C3
- 129.141675 μm2
49-315-INK 9 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=27mm VIS-NIR 400-1000nm
The 49-315-INK is a high-quality achromatic doublet lens, sourced from the renowned optical vendor, Edmund Optics. This lens is specifically designed for use in the visible (VIS) and near-infrared (NIR) spectrum, spanning 400 to 1000 nanometers.
The lens features a 9 millimeter diameter and an effective focal length (EFL) of 27 millimeters, making it suitable for a wide range of optical applications. The doublet is composed of two elements, the first made from N-BK7 Schott glass and the second from N-SF5 Schott glass. This combination helps to minimize chromatic aberration, ensuring sharp and clear images.
The lens geometry is meticulously designed, with a central thickness of 3.89 millimeters and edge thickness of 4.26 millimeters. The first and second radii of curvature are 15.36 millimeters and -12.01 millimeters respectively, while the third radius of curvature is -39.56 millimeters. This specific geometry contributes to the lens's excellent optical performance.
The lens is coated with Edmund Optics' VIS-NIR-0SP2002000 coating on both the front and back surfaces. This anti-reflection coating is designed to maximize transmission in the 400-1000 nanometer range, further enhancing the lens's performance in its intended spectral range.
