65-568 2 mm Dia. N-PSK53A/N-LASF9 Achromatic Doublet; EFL=4mm MgF2 400-700nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 2 mm
- EFL
- 4 mm
- R1
- 2.26 mm
- R2
- -2.26 mm
Material 1
- Name
- N-PSK53A
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.6200834290222301
- λ
- 550 nm
- B1
- 1.38121836
- C1
- 0.00706416337 μm2
- B2
- 0.196745645
- C2
- 0.0233251345 μm2
- B3
- 0.886089205
- C3
- 97.4847345 μm2
Material 2
- Name
- N-LASF9
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.8558415959902288
- λ
- 550 nm
- B1
- 2.00029547
- C1
- 0.0121426017 μm2
- B2
- 0.298926886
- C2
- 0.0538736236 μm2
- B3
- 1.80691843
- C3
- 156.530829 μm2
65-568 2 mm Dia. N-PSK53A/N-LASF9 Achromatic Doublet; EFL=4mm MgF2 400-700nm
The 65-568 is a high-quality achromatic doublet lens from Edmund Optics, designed with a 2 mm diameter and a focal length of 4mm. This lens is a multiplet, meaning it is composed of multiple optical elements to achieve superior performance.
The lens is made from two types of Schott glass, N-PSK53A and N-LASF9, which are renowned for their optical properties. The N-PSK53A is used for the first element, while the N-LASF9 is used for the second. This combination helps to correct chromatic aberration, a common issue in optical systems where different wavelengths of light are focused at different points.
The lens is coated with EDM MgF2 std curve on both the front and back surfaces. This coating enhances the lens's performance by reducing reflection and increasing transmission, thereby improving the overall efficiency of the optical system. The coating is standard and covers the spectral range of 400-700nm, making it suitable for a wide range of applications.
The geometry of the lens is carefully designed to optimize its performance. The diameter is 2 mm, and the edge thickness is 1.72 mm. The inner and outer radii are 0, and the center thickness is 1 mm. The lens's design ensures excellent image quality and minimal distortion.
