49-930 15 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=60mm MgF2 400-700nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 15 mm
- EFL
- 60 mm
- R1
- 37.23 mm
- R2
- -26.69 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
49-930 15 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=60mm MgF2 400-700nm
The 49-930 is a high-quality achromatic doublet lens, 15 mm in diameter, designed and manufactured by Edmund Optics. This lens is a multiplet, meaning it is composed of multiple optical elements to achieve superior performance. The lens is specifically designed for use in the 400-700nm spectral range, making it suitable for a wide range of applications in the visible light spectrum.
The lens features a focal length of 60mm, indicated by the EFL (Effective Focal Length) parameter. This, combined with its 15mm diameter, makes it a compact and versatile option for various optical systems. The lens is constructed from two types of glass, N-BK7 and N-SF5, both from Schott, ensuring high-quality optical performance.
The lens surfaces are coated with EDM MgF2 std curve, a standard anti-reflection coating that reduces surface reflections and increases transmission. This coating is applied to both the front and back surfaces of the lens.
The geometry of the lens includes a thickness of 4.37mm at the edge, a center thickness of 3.5mm, and a central thickness 'a' of 2mm. The lens's inner and outer radii are 0, indicating a symmetrical design. The lens's first and second radii of curvature are 37.23mm and -26.69mm, respectively, while the third radius of curvature is -76.36mm.
