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Achromatic Lenses

사양
Material : All type of material are available to design the optimal achromats
Dimensions : 3 – 200 mm
Surface quality, S-D : 40-20, 60-40
Surface irregularity, P-V : <λ/4 @ 632.8 nm
Focal length tolerance : ±1%
Centration error : <3 arcmin
브랜드
Altechna


Achromatic lenses

Cemented achromatic doublet lenses are optimized to provide excellent chromatic and spherical aberration-free performance. An optimized composition of two lenses in which one is made of dense     flint and the other of crown glass, ensures a much smaller focus than singlet spherical lenses because of minimized longitudinal and transverse spherical aberrations. They also feature a nearly           constant focal length across a wide range of wavelengths.

Standard achromatic doublet lenses cover two ranges – the visible (400 – 700 nm) and near-infrared (700 – 1050 nm). Single-line, dual-line and broadband configurations different from standard ones are also available.

  • Used in applications to reduce beam distortion
  • Other dimensions are available in small and mass-production quantities