PAC096AR.14 76.2 mm Dia. N-BK7/N-SF5 Visible Achromatic Doublet; EFL=500mm 430-700nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- MKS/Newport
Properties
- Shape
- Circular
- Diameter
- 76.2 mm
- EFL
- 500 mm
- R1
- -256.37 mm
- R2
- -1092.83 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
PAC096AR.14 76.2 mm Dia. N-BK7/N-SF5 Visible Achromatic Doublet; EFL=500mm 430-700nm
The PAC096AR.14 is a high-quality achromatic doublet lens from MKS/Newport, designed for use in the visible spectrum, specifically between 430 and 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 76.2 mm diameter and has a thickness of 14 mm. The inner and outer radii are zero, indicating a symmetrical design. The effective focal length (EFL) of this lens is 500mm, making it suitable for applications that require a long focal length.
The lens is made from two types of glass, N-BK7 and N-SF5, both from Schott. These glasses were chosen for their excellent optical properties and ability to minimize chromatic aberration, a common issue in lenses. The lens is coated with New AR-14 on both the front and back surfaces to reduce reflective losses and improve transmission.
The geometry of the lens is carefully designed to optimize its performance. The first surface has a radius of curvature (R) of 258.954 mm, while the second surface has an R of -256.371 mm. The third surface has an R of -1092.828 mm. The thickness at the center of the first and second surfaces is 11 mm and 6.5 mm, respectively, with a total center thickness of 17.5 mm.
