PAC028AR.14 12.7 mm Dia. N-BK7/N-SF5 Visible Achromatic Doublet; EFL=50.8mm 430-700nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- MKS/Newport
Properties
- Shape
- Circular
- Diameter
- 12.7 mm
- EFL
- 50.8 mm
- R1
- -22.71 mm
- R2
- -67.62 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
PAC028AR.14 12.7 mm Dia. N-BK7/N-SF5 Visible Achromatic Doublet; EFL=50.8mm 430-700nm
The PAC028AR.14 is a high-quality achromatic doublet lens from MKS/Newport, designed for use in the visible spectrum, specifically between 430-700nm. This lens is a multiplet, meaning it is composed of multiple optical elements, in this case, two, to achieve superior optical performance.
The lens features a 12.7 mm diameter and a total thickness of 3.5 mm at the edge. The inner and outer radii are zero, indicating a circular shape. The effective focal length (EFL) of this lens is 50.8 mm, and it has a curvature of 30.856 mm and -22.713 mm for the first and second surfaces, respectively. The center thickness is 3 mm for the first optical element and 1.5 mm for the second, resulting in a total center thickness of 4.5 mm.
The lens is made from two types of materials: N-BK7 from Schott and N-SF5 from Schott. These materials are known for their excellent optical properties, making them ideal for use in a wide range of applications. The lens is coated with a new AR-14 coating on both the front and back surfaces to reduce reflective losses and improve transmission.
