49-766 25.4 mm Dia. N-SSK8/N-SF56 Achromatic Doublet; EFL=50.8mm MgF2 400-700nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- 50.8 mm
- R1
- 33.54 mm
- R2
- -27.27 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
49-766 25.4 mm Dia. N-SSK8/N-SF56 Achromatic Doublet; EFL=50.8mm MgF2 400-700nm
The 49-766 is a high-quality achromatic doublet lens, sourced from the renowned optical vendor, Edmund Optics. This lens is characterized by its 25.4 mm diameter and an effective focal length (EFL) of 50.8mm, making it suitable for a wide range of optical applications.
The lens is composed of two elements, N-SSK8 and N-SF56, both from Schott, a leading manufacturer of optical glass. This combination ensures excellent image quality, minimizing chromatic aberration, a common issue in optical systems.
The lens features a standard MgF2 coating on both the front and back surfaces, designed to enhance light transmission within the 400-700nm spectral range. This coating also provides protection against environmental factors, ensuring the longevity and durability of the lens.
The geometry of the lens is meticulously designed, with a thickness of 8.2mm at the edge and 8mm at the center, reducing optical aberrations and improving overall performance. The inner and outer radii are 0, indicating a symmetrical design that further contributes to the lens's high-quality optical characteristics.
