49-382-INK 40 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=160mm VIS-NIR 400-1000nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 40 mm
- EFL
- 160 mm
- R1
- 98.66 mm
- R2
- -70.73 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
49-382-INK 40 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=160mm VIS-NIR 400-1000nm
The 49-382-INK is a high-quality achromatic doublet lens, sourced from the renowned optical vendor, Edmund Optics. This lens, with a diameter of 40 mm, is designed for use in the visible to near-infrared spectrum, spanning 400 to 1000 nm. 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 160 mm, indicated by its Effective Focal Length (EFL). 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 49-382-INK lens is coated with Edmund Optics' VIS-NIR0SP2002000 coating on both the front and back surfaces. This anti-reflection coating is designed to reduce surface reflections and increase transmission in the visible to near-infrared spectrum, further enhancing the lens' performance.
The lens geometry is also noteworthy, with a thickness at the edge of 9.48 mm and a center thickness of 8.5 mm. The lens also features three radii of curvature: r1 at 98.66 mm, r2 at -70.73 mm, and r3 at -205.72 mm. These parameters contribute to the lens' overall optical performance and its ability to deliver sharp, clear images.
