49-945-INK 20 mm Dia. N-SSK8/N-SF56 Achromatic Doublet; EFL=50mm VIS 0° 425-675nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 20 mm
- EFL
- 50 mm
- R1
- 36.92 mm
- R2
- -25.65 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
49-945-INK 20 mm Dia. N-SSK8/N-SF56 Achromatic Doublet; EFL=50mm VIS 0° 425-675nm
The 49-945-INK is a high-quality Achromatic Doublet Lens, boasting a 20 mm diameter and effective focal length (EFL) of 50mm. This lens is designed for use within the visible light spectrum, specifically catering to wavelengths between 425-675nm. Manufactured by Edmund Optics, a renowned vendor in the optical industry, this lens is a reliable choice for various applications.
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 optical systems. The front and back surfaces of the lens are coated with EDm Vis-0 std curve, enhancing its light transmission capabilities and overall performance.
The lens geometry is meticulously designed, with a thickness of 4.78mm at the edge and 4.8mm at the center. The center thickness includes an additional 2mm for the central lens element. The lens features three radii of curvature: r1 at 36.92mm, r2 at -25.65mm, and r3 at -77.89mm. The inner and outer radii are both zero, indicating a circular shape.
The lens is currently in stock and available for immediate purchase. For more detailed information, including technical specifications and purchasing options, please refer to the provided weblink.
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