49-939-INK 9 mm Dia. N-SSK8/N-SF56 Achromatic Doublet; EFL=22.5mm VIS 0° 425-675nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 9 mm
- EFL
- 22.5 mm
- R1
- 14.79 mm
- R2
- -12.09 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
49-939-INK 9 mm Dia. N-SSK8/N-SF56 Achromatic Doublet; EFL=22.5mm VIS 0° 425-675nm
The 49-939-INK is a high-quality Achromatic Doublet lens, sourced from the renowned optical vendor, Edmund Optics. This lens, with a catalog number 49-939-INK, is available for purchase directly from their website and is currently in stock. The lens boasts a 9mm diameter and an effective focal length (EFL) of 22.5mm, making it suitable for a wide range of optical applications.
The lens is composed of two types of glass, N-SSK8 and N-SF56, both from the reputable Schott glass manufacturer. This combination of materials helps to minimize chromatic aberration, a common issue in optical systems, thereby enhancing the overall image quality. The lens is coated with the EDM VIS-0 standard curve on both the front and back surfaces, which further improves its light transmission capabilities within the visible spectrum (425-675nm).
The lens geometry is carefully designed with a center thickness of 3mm and an edge thickness of 3.58mm. The inner and outer radii are 0mm, suggesting a symmetrical design. The lens also features a curvature with radii of 14.79mm and -12.09mm on the first surface, and -45.72mm on the second surface. This complex geometry allows for precise control over the optical path, making the lens suitable for a variety of applications.
