49-780 25.4 mm Dia. N-SSK8/N-SF56 Achromatic Doublet; EFL=63.5mm VIS 0° 425-675nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- 63.5 mm
- R1
- 42.26 mm
- R2
- -33.37 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
49-780 25.4 mm Dia. N-SSK8/N-SF56 Achromatic Doublet; EFL=63.5mm VIS 0° 425-675nm
The 49-780 is a high-quality achromatic doublet lens, sourced from the renowned optical vendor, Edmund Optics. This lens boasts a 25.4 mm diameter and an effective focal length (EFL) of 63.5mm, making it suitable for a wide range of optical applications.
The lens is composed of two elements, made from N-SSK8 and N-SF56 Schott glass, respectively. These materials have been carefully selected to minimize chromatic aberration, ensuring sharp, clear images across the visible light spectrum, specifically within the 425-675nm range.
The lens features a standard coating on both the front and back surfaces, specifically the EDM VIS-0 STD CURVE coating. This coating enhances the lens's light transmission capabilities and provides protection against environmental factors, further enhancing the lens's performance and durability.
The lens's geometry is meticulously designed, with a center thickness of 8mm and an edge thickness of 8.89mm. The lens's inner and outer radii are 0, and it has a shape that is typical of multiplet lenses.
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