47-694 6.25 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=30mm VIS 0° 425-675nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 6.25 mm
- EFL
- 30 mm
- R1
- 18.11 mm
- R2
- -13.51 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
47-694 6.25 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=30mm VIS 0° 425-675nm
The 47-694 is a high-quality achromatic doublet lens, boasting a 6.25 mm diameter and an effective focal length (EFL) of 30 mm, specifically designed for the visible light spectrum ranging from 425 to 675 nm. This lens is sourced from the renowned optical vendor, Edmund Optics, and is available for purchase through their website.
The lens is crafted from two types of Schott glass: N-BK7 and N-SF5. These materials ensure excellent optical performance, minimizing chromatic aberration and delivering sharp, clear images. The lens features a sophisticated geometry, with an inner radius of 0 mm, an outer radius of 0 mm, and a center thickness of 2.3 mm. The edge thickness is 2.8 mm, while the center thickness 'a' is 0.9 mm, providing robust structural integrity.
The 47-694 lens comes with standard EDM VIS-0 coatings on both the front and back surfaces. These coatings are specifically designed to enhance the lens' performance within the visible light spectrum. The lens is available in a multiplet shape, offering versatility for various optical applications.
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