49-329 12.5 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=60mm VIS-NIR 400-1000nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 12.5 mm
- EFL
- 60 mm
- R1
- 36.51 mm
- R2
- -26.33 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
49-329 12.5 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=60mm VIS-NIR 400-1000nm
This is a high-quality achromatic doublet lens from the renowned optical vendor, Edmund Optics. The lens, catalog number 49-329, is designed for use in the visible to near-infrared spectrum, specifically for wavelengths between 400 and 1000nm.
The lens features a 12.5mm diameter and an effective focal length (EFL) of 60mm, making it suitable for a wide range of optical applications. The lens is constructed from two types of glass, N-BK7 and N-SF5, both from Schott, which are renowned for their excellent optical properties.
The lens's geometry includes a thickness of 4.21mm at the edge, a center thickness of 3.5mm, and a central thickness 'a' of 1.5mm. The lens's first radius of curvature (r1) is 36.51mm, while the second radius (r2) is -26.33mm, and the third radius (r3) is -78.35mm.
The lens is coated with Edmund Optics' VIS-NIR coating (edm visnir0sp2002000) on both the front and back surfaces, enhancing its performance in the specified wavelength range. This lens is a multiplet, meaning it is composed of multiple elements, which allows it to correct chromatic aberrations more effectively than a single lens.
