APAC13 12.5 mm Dia. N-LAK8/N-SF57 Aspherical Achromatic Doublet; EFL=20mm 425-675nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- MKS/Newport
Properties
- Shape
- Circular
- Diameter
- 12.5 mm
- EFL
- 20 mm
- R1
- -20 mm
Material 1
- Name
- N-LAK8
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.7158311835286262
- λ
- 550 nm
- B1
- 1.33183167
- C1
- 0.00620023871 μm2
- B2
- 0.546623206
- C2
- 0.0216465439 μm2
- B3
- 1.19084015
- C3
- 82.5827736 μm2
Material 2
- Name
- N-SF57
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.854148364121864
- λ
- 550 nm
- B1
- 1.87543831
- C1
- 0.0141749518 μm2
- B2
- 0.37375749
- C2
- 0.0640509927 μm2
- B3
- 2.30001797
- C3
- 177.389795 μm2
APAC13 12.5 mm Dia. N-LAK8/N-SF57 Aspherical Achromatic Doublet; EFL=20mm 425-675nm
The APAC13 is a high-performance lens from MKS/Newport, designed for applications that require superior optical quality within the 425-675nm wavelength range. This lens boasts an effective focal length (EFL) of 20mm and a 12.5 mm diameter, making it suitable for a wide range of optical systems.
The lens is constructed as an achromatic doublet, featuring two different glass types to minimize chromatic aberration. The first element is made of N-LAK8 from Schott, while the second element is made of N-SF57 from Schott. This combination ensures that the lens delivers sharp, clear images with minimal color fringing.
The APAC13 features a unique geometry, with a center thickness of 6.5mm, an edge thickness of 5.01mm, and a radius of curvature of 13.3mm for the first surface and -20mm for the second surface. This aspherical design further reduces optical aberrations, providing superior image quality.
The lens is coated with New Vis-0 on both the front and back surfaces, enhancing its transmission and protecting it from environmental hazards. This coating ensures the lens delivers optimal performance in a variety of conditions.
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