49-356 25 mm Dia. N-BAF10/N-SF10 Achromatic Doublet; EFL=50mm VIS-NIR 400-1000nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- 50 mm
- R1
- 34.53 mm
- R2
- -21.98 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
49-356 25 mm Dia. N-BAF10/N-SF10 Achromatic Doublet; EFL=50mm VIS-NIR 400-1000nm
The 49-356 is a high-quality achromatic doublet lens, designed and manufactured by Edmund Optics. This lens, with a 25 mm diameter, is specifically engineered for use in the visible (VIS) and near-infrared (NIR) spectrum, spanning 400-1000nm.
The lens is constructed from two types of Schott glass, N-BAF10 and N-SF10, which are renowned for their excellent optical properties. The use of these materials in a doublet configuration helps to correct chromatic aberration, a common issue in optical systems where different wavelengths of light are focused at different points.
The lens has an effective focal length (EFL) of 50mm, making it suitable for a wide range of applications. The geometry of the lens includes a thickness of 8.79mm at the edge, with a central thickness of 9mm and a thickness of 2.5mm at the center a. The lens also features radii of curvature of 34.53mm, -21.98mm, and -214.63mm for r1, r2, and r3 respectively.
The lens is coated with Edmund Optics' VIS-NIR coating (edm visnir0sp2002000), which is applied to both the front and back surfaces. This coating is designed to enhance the lens' performance in the VIS-NIR spectrum, improving transmission and reducing reflection.
