PAC067 25.4 mm Dia. N-BK7/N-SF5 Visible Achromatic Doublet; EFL=250mm MgF2 400-700nm
- 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
PAC067 25.4 mm Dia. N-BK7/N-SF5 Visible Achromatic Doublet; EFL=250mm MgF2 400-700nm
The PAC067 is a high-quality achromatic doublet lens from MKS/Newport, designed for use in the visible spectrum, specifically between 400-700nm. This lens is a multiplet type, featuring a base shape that is circular, with a diameter of 25.4mm.
The lens is constructed from two types of materials, N-BK7 and N-SF5, both from Schott. These materials are known for their excellent optical properties, making them ideal for use in a wide range of applications. The lens features an effective focal length (EFL) of 250mm, which is a common choice for many optical systems due to its versatility.
The geometry of the lens is carefully designed to optimize its performance. The edge thickness is 5.5mm, while the center thickness is 3.8mm for the first surface and 2.5mm for the second surface, resulting in a total center thickness of 6.3mm. The lens also features specific radii of curvature (r, r1, and r2) that contribute to its overall optical performance.
The lens is coated with MgF2, a broadband antireflection coating that is particularly effective in the visible spectrum. This coating helps to reduce surface reflections, improving the overall transmission of the lens. The coating is applied to both the front and back surfaces of the lens.
