49-760 12.7 mm Dia. N-SSK8/N-SF56 Achromatic Doublet; EFL=25.4mm MgF2 400-700nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 12.7 mm
- EFL
- 25.4 mm
- R1
- 16.77 mm
- R2
- -13.63 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-SF56
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.791037231451858
- λ
- 550 nm
- B1
- 1.73562085
- C1
- 0.0129624742 μm2
- B2
- 0.317487012
- C2
- 0.0612884288 μm2
- B3
- 1.95398203
- C3
- 161.559441 μm2
49-760 12.7 mm Dia. N-SSK8/N-SF56 Achromatic Doublet; EFL=25.4mm MgF2 400-700nm
The 49-760 is a high-quality achromatic doublet lens from Edmund Optics, designed with a 12.7 mm diameter and a focal length of 25.4 mm. This lens is a multiplet, meaning it is composed of multiple optical elements to achieve superior performance.
The lens is made from two types of Schott glass, N-SSK8 and N-SF56, which are renowned for their optical properties. The N-SSK8 is used for the first element, while the N-SF56 is used for the second. This combination helps to correct chromatic aberration, a common issue in optical systems where different wavelengths of light are focused at different points.
The lens features a standard MgF2 coating on both the front and back surfaces. This coating is designed to reduce reflection and increase transmission, particularly in the 400-700 nm range. The thickness of the lens varies, with a center thickness of 4 mm and an edge thickness of 4.1 mm.
The 49-760 is currently in stock and available for purchase through the Edmund Optics website. With its superior optical performance and robust design, this lens is an excellent choice for a wide range of optical applications.
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