49-305 6.25 mm Dia. N-SSK8/N-SF10 Achromatic Doublet; EFL=15mm VIS-NIR 400-1000nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 6.25 mm
- EFL
- 15 mm
- R1
- 7.95 mm
- R2
- -7.25 mm
Material 1
- Name
- N-SSK8
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.6203679865890697
- λ
- 550 nm
- B1
- 1.44857867
- C1
- 0.00869310149 μm2
- B2
- 0.117965926
- C2
- 0.0421566593 μm2
- B3
- 1.06937528
- C3
- 111.300666 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
49-305 6.25 mm Dia. N-SSK8/N-SF10 Achromatic Doublet; EFL=15mm VIS-NIR 400-1000nm
The 49-305 is a high-quality achromatic doublet lens, boasting a 6.25 mm diameter and a focal length of 15mm, specifically designed for the visual (VIS) and near-infrared (NIR) spectrum, spanning 400-1000nm. This lens is sourced from the renowned optical vendor, Edmund Optics, and is available for purchase on their official website.
The lens is constructed from two types of Schott glass, N-SSK8 and N-SF10, which are renowned for their excellent optical properties. The front and back surfaces of the lens are coated with the EDM VISNIR0SP2002000 coating, enhancing its performance in the VIS-NIR spectrum.
The lens geometry is meticulously designed, with an inner radius of 0, an outer radius of 0, and a central thickness of 2.7mm. The edge thickness is 2.64mm, and the lens features three radii of curvature: r1 at 7.95mm, r2 at -7.25mm, and r3 at -277.83mm. The lens also has a central thickness 'a' of 0.6mm.
This lens is a multiplet, meaning it is composed of multiple optical elements. The multiplet design allows for superior optical performance, making it suitable for a wide range of applications in the VIS-NIR spectrum.
