47-656 9 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=40mm VIS 0° 425-675nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 9 mm
- EFL
- 40 mm
- R1
- 24.77 mm
- R2
- -18.01 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
47-656 9 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=40mm VIS 0° 425-675nm
The 47-656 is a high-quality achromatic doublet lens, sourced from Edmund Optics, designed with a 9 mm diameter and a focal length of 40 mm. This lens is specifically engineered for the visible spectrum, covering wavelengths from 425 to 675 nm. The lens is constructed from two types of Schott glass, N-BK7 and N-SF5, which are renowned for their excellent optical properties.
The lens features a sophisticated geometry, with an inner radius of 0 mm and an outer radius of 0 mm. The edge thickness measures 4.45 mm, while the center thickness is 3.73 mm. The lens also includes a front and back coating of edm vis-0 std curve, enhancing its overall performance and durability.
This lens is a multiplet, meaning it is composed of multiple elements. The first radius of curvature (r1) is 24.77 mm, while the second radius (r2) is -18.01 mm, and the third radius (r3) is -51.17 mm. The lens is available for purchase through the Edmund Optics website, where it is currently in stock.
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