45-820 9 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=75mm MgF2 400-700nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 9 mm
- EFL
- 75 mm
- R1
- 46.44 mm
- R2
- -33.77 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
45-820 9 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=75mm MgF2 400-700nm
The 45-820 is a high-quality achromatic doublet lens, sourced from the renowned optical vendor, Edmund Optics. This lens is designed with a 9 mm diameter and a focal length of 75 mm, 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, ensuring excellent optical performance.
The lens features a sophisticated geometry, with a central thickness of 3 mm and edge thickness of 4.28 mm. The inner and outer radii are 0 mm, indicating a simple, circular shape. The first and second radii of curvature are 46.44 mm and -33.77 mm, respectively, while the third radius of curvature is -95.94 mm. This configuration helps to minimize spherical aberration and other optical aberrations, enhancing the image quality.
The lens is coated with MgF2, a standard coating from Edmund Optics, which provides excellent transmission in the 400-700 nm spectral range. This coating is applied to both the front and back surfaces of the lens, ensuring high-transmission performance and protection against environmental hazards.
The 45-820 is currently in stock and available for immediate purchase. For more information, please refer to the vendor's website or contact their customer service.
