49-376 30 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=150mm VIS-NIR 400-1000nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 30 mm
- EFL
- 150 mm
- R1
- 91.31 mm
- R2
- -65.57 mm
Material 1
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5185223876207927
- λ
- 550 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
Material 2
- Name
- N-SF5
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.6771143911586193
- λ
- 550 nm
- B1
- 1.52481889
- C1
- 0.011254756 μm2
- B2
- 0.187085527
- C2
- 0.0588995392 μm2
- B3
- 1.42729015
- C3
- 129.141675 μm2
49-376 30 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=150mm VIS-NIR 400-1000nm
The 49-376 is a high-quality achromatic doublet lens, designed and manufactured by Edmund Optics. This lens is specifically engineered for use in the visible (VIS) and near-infrared (NIR) spectrum, with a wavelength range of 400-1000nm. The lens boasts a 30mm diameter and an effective focal length (EFL) of 150mm, making it suitable for a wide range of optical applications.
The lens is constructed from two types of glass, N-BK7 and N-SF5, both from Schott. This combination is used to correct chromatic aberration, a common issue in optical systems where different wavelengths of light are focused at different points. The use of these materials ensures that the lens provides sharp, clear images across the entire spectrum it is designed to handle.
The 49-376 features a sophisticated geometry, with a center thickness of 8.1mm and edge thickness of 8.88mm. The lens also has a complex curvature, with radii of 91.31mm, -65.57mm, and -195.87mm, contributing to its excellent optical performance. The lens is coated with Edmund Optics' VIS-NIR coating (edm visnir0sp2002000) on both the front and back surfaces, further enhancing its performance in the specified wavelength range.
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