47-741 40 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=200mm VIS 0° 425-675nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 40 mm
- EFL
- 200 mm
- R1
- 124.12 mm
- R2
- -87.26 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
47-741 40 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=200mm VIS 0° 425-675nm
The 47-741 is a high-quality achromatic doublet lens, boasting a 40 mm diameter and an effective focal length (EFL) of 200mm. This lens is designed for use within the visible light spectrum, specifically between 425-675nm. The lens is sourced from the reputable vendor, Edmund Optics, and is available for purchase through their website.
The lens is constructed from two types of glass, N-BK7 and N-SF5, both from Schott. These materials are chosen for their excellent optical properties, contributing to the lens's high performance. The lens features a standard anti-reflective coating on both the front and back surfaces, further enhancing its light transmission capabilities.
The lens's geometry is carefully designed, with a diameter of 40mm, a thickness at the edge of 10.09mm, and a center thickness of 8.5mm. The lens's inner and outer radii are 0, and it has a shape classified as a multiplet. The curvature of the lens is defined by its first and second radii, R1 and R2, which are 124.12mm and -87.26mm, respectively. The lens also features a third radius, R3, which is -253.1mm.
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