49-361-INK 25 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=125mm VIS-NIR 400-1000nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- 125 mm
- R1
- 76.28 mm
- R2
- -54.55 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
49-361-INK 25 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=125mm VIS-NIR 400-1000nm
The 49-361-INK is a high-quality achromatic doublet lens, sourced from the renowned optical vendor, Edmund Optics. This lens, with a diameter of 25 mm, is designed for use in the visible to near-infrared spectrum, spanning 400-1000nm. The lens is specifically engineered to minimize chromatic aberration, ensuring clear, focused images across the entire spectral range.
The lens features a focal length of 125mm, indicated by the EFL (Effective Focal Length) parameter. This long focal length makes it suitable for applications requiring moderate magnification and a narrow field of view. The lens is constructed from two types of glass, N-BK7 and N-SF5, both from Schott, ensuring high optical quality and durability.
The geometry of the lens is carefully crafted, with a central thickness of 6mm and edge thickness of 6.89mm. The lens surfaces are coated with Edmund Optics' VIS-NIR coating (edm visnir0sp2002000), which provides excellent transmission and protection across the visible and near-infrared spectrum.
This lens is a multiplet, meaning it is composed of multiple elements. The curvature of these elements is precisely designed and manufactured, with radii of 76.28mm, -54.55mm, and -162.43mm, contributing to the lens's high optical performance. The lens is in stock and ready for immediate use, as indicated by its weblink status.
