49-788-INK 12.7 mm Dia. N-SSK8/N-SF56 Achromatic Doublet; EFL=38.1mm VIS-NIR 400-1000nm
- 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
49-788-INK 12.7 mm Dia. N-SSK8/N-SF56 Achromatic Doublet; EFL=38.1mm VIS-NIR 400-1000nm
The 49-788-INK is a high-quality achromatic doublet lens from Edmund Optics, designed for use in the visible (VIS) and near-infrared (NIR) spectrum, specifically catering to the 400-1000nm range. This lens, with a diameter of 12.7 mm, is a multiplet type, offering superior optical performance.
The lens's geometry is meticulously crafted, with an effective focal length (EFL) of 38.1 mm, providing a balanced relationship between the lens's size and its focusing power. The lens's edge thickness is 3.92 mm, while the center thickness is 3.5 mm, ensuring robustness and structural integrity. The lens features three radii of curvature: r1 at 25.43 mm, r2 at -20.03 mm, and r3 at -74.39 mm, which contribute to its achromatic properties, minimizing chromatic aberration.
The 49-788-INK is composed of two types of Schott glass: N-SSK8 and N-SF56. These materials are carefully selected for their optical properties, contributing to the lens's overall performance. The lens is coated with Edmund Optics' VIS-NIR0SP2002000 coating on both the front and back surfaces, enhancing its transmission capabilities across the VIS-NIR spectrum.
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