• Product
  • Spectroscopy
  • Sigma-Koki
  • Sigma-Koki
  • Sigma-Koki
 
 
Sigma-Koki
Spectroscopy
Detectors
Visualization (가시화)
LAMP
Laser beamprofilter
Cryogenic
Laser
Sigma-Koki
Fluorescence Life Time
Fiber&probe
 
Sigma-Koki
DL-NM (Negative achromatic lens)
  • DL-NM (Negative achromatic lens)
  • It is achromatic lens having a negative focal length.By setting the concave one bonding two lenses wavelength dispersion of the refractive index is different, can be smaller than the spherical single lens and spherical aberration and chromatic aberra
Attention

▶There is a direction to the incident parallel light to the achromatic lens. A surface with a small radius of curvature is allowed to be incident parallel light from a rear surface (the surface on the arrow is pointing to). When it is incident parallel light from the opposite side, spherical aberration and chromatic aberration will occur and the focused spot size will increase.
▶When used in the visible region, spherical aberration and chromatic aberration increases. In addition, the transmittance decreases.

Common Specifications
MaterialN-BAF10, N-SF10
Design wavelength486.1nm, 546.1nm, 656.3nm
CoatingAntireflection coating
CementUltraviolet Hardened Adhesive
Laser Damage Threshold0.3J/cm2
(Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Surface Quality (Scratch−Dig)40-20
Clear aperture90% of actual aperture

 

주제
 
   
  COPYRIGHT 2016 dongwoo. ALL RIGHTS RESERVED