47-740 40 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=160mm VIS 0° 425-675nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 40 mm
- EFL
- 160 mm
- R1
- 98.66 mm
- R2
- -70.73 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
47-740 40 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=160mm VIS 0° 425-675nm
The 47-740 is a high-quality achromatic doublet lens, boasting a 40 mm diameter and an effective focal length of 160 mm, specifically designed for the visible light spectrum ranging from 425 to 675 nm. This lens is sourced from the reputable optical 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, ensuring excellent optical performance. The front and back surfaces of the lens are coated with the EDM VIS-0 standard curve coating, providing improved light transmission and protection against environmental factors.
The lens geometry is carefully designed with a 9.48 mm thickness at the edge, a center thickness of 8.5 mm, and a 4 mm thickness at the back surface (a). The radii of the lens surfaces are R1 = 98.66 mm, R2 = -70.73 mm, and R3 = -205.72 mm, contributing to the lens's superior optical properties.
This achromatic doublet lens is a multiplet, meaning it consists of multiple elements to correct chromatic aberrations and improve overall image quality. The detailed parameters and specifications make the 47-740 an ideal choice for various applications requiring high-performance optical components.
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