47-658 9 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=60mm VIS 0° 425-675nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 9 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
47-658 9 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=60mm VIS 0° 425-675nm
The 47-658 is a high-quality achromatic doublet lens, sourced from the renowned optical vendor, Edmund Optics. This lens boasts a 9 mm diameter and an effective focal length (EFL) of 60 mm, specifically designed for the visible light spectrum, spanning 425-675 nm.
The lens is meticulously crafted from two types of Schott glass: N-BK7 and N-SF5. This combination ensures superior optical performance, minimizing chromatic aberration, a common issue in lens systems. The lens's geometry is optimized with a 36.51 mm first radius (r1), a -26.33 mm second radius (r2), and a -78.35 mm third radius (r3). These parameters contribute to the lens's excellent imaging capabilities.
The 47-658 features a standard coating on both the front and back surfaces. This coating, identified as 'edm vis-0 std curve', is designed to enhance the lens's light transmission and reduce surface reflections, further improving its overall performance.
The lens's robust construction includes a 4.59 mm thickness at the edge, a 3.5 mm thickness at the center, and a 1.5 mm thickness at the center a. This design ensures the lens's durability and stability, making it an ideal choice for various optical applications.
