49-278 5 mm Dia. N-BAF10/N-SF10 Achromatic Doublet; EFL=20mm VIS 0° 425-675nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 5 mm
- EFL
- 20 mm
- R1
- 14.11 mm
- R2
- -8.63 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-SF10
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.7336618876174243
- λ
- 550 nm
- B1
- 1.62153902
- C1
- 0.0122241457 μm2
- B2
- 0.256287842
- C2
- 0.0595736775 μm2
- B3
- 1.64447552
- C3
- 147.468793 μm2
49-278 5 mm Dia. N-BAF10/N-SF10 Achromatic Doublet; EFL=20mm VIS 0° 425-675nm
The 49-278 is a high-quality achromatic doublet lens, sourced from the renowned optical vendor Edmund Optics. This lens boasts a 5 mm diameter and an effective focal length (EFL) of 20 mm, specifically designed for the visible light spectrum, spanning 425-675 nm.
The lens is meticulously crafted from two distinct materials, N-BAF10 and N-SF10, both from Schott's extensive catalog. These materials are known for their exceptional optical properties, contributing to the lens's overall performance. The lens is coated with Edmund Optics' standard Vis-0 coating on both the front and back surfaces, ensuring optimal light transmission and protection against environmental factors.
The lens's geometry is intricately designed, with a thickness of 2.38 mm at the edge, gradually decreasing to 1.61 mm at the center. The first and second radii of curvature are 14.11 mm and -8.63 mm, respectively, while the third radius of curvature is -75.59 mm. The lens's design is a multiplet, featuring multiple elements to correct optical aberrations and enhance image quality.
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