PAC089AR.14 50.8 mm Dia. N-BK7/N-SF5 Visible Achromatic Doublet; EFL=300mm 430-700nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- MKS/Newport
Properties
- Shape
- Circular
- Diameter
- 50.8 mm
- EFL
- 300 mm
- R1
- -141.6 mm
- R2
- -475.99 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
PAC089AR.14 50.8 mm Dia. N-BK7/N-SF5 Visible Achromatic Doublet; EFL=300mm 430-700nm
The PAC089AR.14 is a high-quality achromatic doublet lens, designed and manufactured by MKS/Newport. This lens is specifically engineered for use in the visible light spectrum, with a effective focal length (EFL) of 300mm, making it suitable for a wide range of optical applications.
The lens features a 50.8 mm diameter, with a thickness of 11.4 mm at the edge. The inner and outer radii are 0, indicating a circular shape. The EFL of 300mm is achieved through a complex geometry, with radii of curvature of r1=-141.605, r2=-475.988, and a center thickness of 14mm. This geometry is designed to minimize chromatic aberration, a common issue in optical systems, particularly in the visible light spectrum.
The lens is composed of two types of glass, N-BK7 and N-SF5, both from Schott. These materials were chosen for their excellent optical properties, particularly their low dispersion, which contributes to the lens's high chromatic correction. The lens is coated with a new AR-14 coating on both the front and back surfaces, further enhancing its performance by reducing reflection and increasing transmission in the visible light spectrum.
More Lens
