49-309-INK 6.25 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=35mm VIS-NIR 400-1000nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 6.25 mm
- EFL
- 35 mm
- R1
- 23.14 mm
- R2
- -14.51 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
49-309-INK 6.25 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=35mm VIS-NIR 400-1000nm
The 49-309-INK is a high-quality achromatic doublet lens, sourced from the renowned optical vendor, Edmund Optics. This lens, with a diameter of 6.25 mm, is designed for use in the visible to near-infrared spectrum, spanning 400-1000nm. The lens is specifically engineered to correct chromatic aberration, ensuring sharp, clear images free from color fringing.
The lens features a focal length (EFL) of 35mm, making it suitable for a wide range of optical applications. The geometry of the lens includes an edge thickness of 2.86mm, an inner radius of 0, and an outer radius of 0. The first radius of curvature (r1) is 23.14mm, while the second radius (r2) is -14.51mm, and the third radius (r3) is -38.86mm. The center thickness of the lens is 2.3mm, with a center 'a' thickness of 0.9mm.
The lens is composed of two materials: N-BK7 from Schott and N-SF5 from Schott. Both these materials are renowned for their optical quality and are commonly used in a variety of optical systems. The lens is coated with EDm VIS-NIR 0SP2002000 on both the front and back surfaces, enhancing its transmission characteristics in the visible to near-infrared spectrum.
According to the vendor's website, the 49-309-INK is currently in stock, making it readily available for immediate use in your optical systems. For more information, including detailed specifications and purchasing options, please refer to the vendor's website using the provided weblink.
