49-940 12.5 mm Dia. N-BAF10/N-SF57 Achromatic Doublet; EFL=17.5mm VIS 0° 425-675nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 12.5 mm
- EFL
- 17.5 mm
- R1
- 12.2 mm
- R2
- -9.82 mm
Material 1
- Name
- N-BAF10
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.6730569473646495
- λ
- 550 nm
- B1
- 1.5851495
- C1
- 0.00926681282 μm2
- B2
- 0.143559385
- C2
- 0.0424489805 μm2
- B3
- 1.08521269
- C3
- 105.613573 μm2
Material 2
- Name
- N-SF57
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.854148364121864
- λ
- 550 nm
- B1
- 1.87543831
- C1
- 0.0141749518 μm2
- B2
- 0.37375749
- C2
- 0.0640509927 μm2
- B3
- 2.30001797
- C3
- 177.389795 μm2
49-940 12.5 mm Dia. N-BAF10/N-SF57 Achromatic Doublet; EFL=17.5mm VIS 0° 425-675nm
The 49-940 is a high-quality achromatic doublet lens, boasting a 12.5 mm diameter and an effective focal length of 17.5mm. This lens is designed for use within the visible light spectrum, specifically between 425-675nm.
The lens is composed of two elements, N-BAF10 and N-SF57, both sourced from the reputable optical manufacturer Schott. These materials are carefully selected to minimize chromatic aberration, a common issue in lens systems where different wavelengths of light are focused at different points.
The lens features a standard coating on both the front and back surfaces, specifically the EDM VIS-0 STD CURVE coating. This coating enhances the lens's performance by reducing surface reflections, thereby increasing transmission and improving image quality.
The geometry of the lens is meticulously designed, with an inner radius of 0mm, an outer radius of 0mm, and a center thickness of 5.8mm. The edge thickness is 5.08mm, and the lens has a parabolic shape with radii of curvature of 12.2mm and -9.82mm for the first and second surfaces, respectively, and a third radius of -39.19mm.
This lens is available from Edmund Optics and is currently in stock, making it an ideal choice for immediate integration into your optical system.
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