PAC049AR.14 25.4 mm Dia. N-BK7/N-SF5 Visible Achromatic Doublet; EFL=88.9mm 430-700nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- MKS/Newport
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- 88.9 mm
- R1
- -39.66 mm
- R2
- -117.48 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
PAC049AR.14 25.4 mm Dia. N-BK7/N-SF5 Visible Achromatic Doublet; EFL=88.9mm 430-700nm
The PAC049AR.14 is a high-quality achromatic doublet lens, designed and manufactured by MKS/Newport. This lens boasts a 25.4 mm diameter and is specifically engineered for visible light applications, with a wavelength range of 430-700nm.
The lens is constructed from two types of materials, N-BK7 and N-SF5, both from Schott, ensuring superior optical performance. The N-BK7, a borosilicate crown glass, is known for its excellent homogeneity and low optical dispersion, making it ideal for a wide range of applications. The N-SF5, a fluorite crown glass, offers a low refractive index and low dispersion, further enhancing the lens's achromatic properties.
The lens features an effective focal length (EFL) of 88.9mm, providing a long focal length that is beneficial for various applications. The lens's geometry includes a thickness edge of 5.3mm, a center thickness of 7.47mm, and radii of curvature of 54.097mm, -39.663mm, and -117.483mm for the first and second surfaces, respectively.
The PAC049AR.14 is coated with a new AR-14 coating on both the front and back surfaces, reducing reflection and increasing transmission in the visible spectrum. This coating ensures optimal light transmission, making the lens suitable for high-precision applications.
