PAC067AR.14 25.4 mm Dia. N-BK7/N-SF5 Visible Achromatic Doublet; EFL=250mm 430-700nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- MKS/Newport
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- 250 mm
- R1
- -112.21 mm
- R2
- -336.2 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
PAC067AR.14 25.4 mm Dia. N-BK7/N-SF5 Visible Achromatic Doublet; EFL=250mm 430-700nm
The PAC067AR.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, spanning from 430nm to 700nm. The lens boasts a 25.4 mm diameter, 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. These materials are carefully selected to minimize chromatic aberration, a common issue in optical systems where different wavelengths of light are focused at different points. By using an achromatic doublet design, the PAC067AR.14 effectively corrects this aberration, ensuring sharp, clear images across the entire visible light spectrum.
The lens has an effective focal length (EFL) of 250mm, providing a moderate level of magnification. The geometry of the lens is carefully designed, with a center thickness of 6.3mm and edge thickness of 5.5mm, ensuring excellent optical performance. The lens also features a curved surface with a radius of 152.037mm, further enhancing its optical properties.
The PAC067AR.14 is coated with a new AR-14 coating on both the front and back surfaces. This anti-reflective coating reduces unwanted reflections and increases transmission, improving the overall efficiency and performance of the lens.
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