49-775-INK 12.7 mm Dia. N-SSK8/N-SF56 Achromatic Doublet; EFL=38.1mm VIS 0° 425-675nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 12.7 mm
- EFL
- 38.1 mm
- R1
- 25.43 mm
- R2
- -20.03 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
49-775-INK 12.7 mm Dia. N-SSK8/N-SF56 Achromatic Doublet; EFL=38.1mm VIS 0° 425-675nm
The 49-775-INK is a high-quality achromatic doublet lens, sourced from the renowned optical vendor, Edmund Optics. This lens boasts a 12.7 mm diameter and an effective focal length (EFL) of 38.1mm, making it suitable for a wide range of applications within the visible light spectrum, specifically between 425-675nm.
The lens is constructed from two types of Schott glass, N-SSK8 and N-SF56, which are carefully selected to minimize chromatic aberration, a common issue in lens systems. The front and back surfaces of the lens are coated with the EDM VIS-0 standard curve coating, enhancing its light transmission capabilities and overall performance.
The lens geometry is intricately designed, with a center thickness of 3.5mm and edge thickness of 3.92mm. The lens features three radii of curvature: r1 at 25.43mm, r2 at -20.03mm, and r3 at -74.39mm. The inner and outer radii are both zero, indicating a circular shape.
This lens is available for purchase directly from the Edmund Optics website, and the link provided in the item data indicates that it is currently in stock. With its superior design and construction, the 49-775-INK achromatic doublet lens is an excellent choice for various optical applications.
