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  • 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-PNIR (Near infrared achromatic lens)
  • DL-PNIR (Near infrared achromatic lens)
  • By setting the single lens bonding two lenses with wavelength dispersion of the refractive index is different, it can be smaller spherical aberration and chromatic aberration than the spherical single lens.
Attention

▶Please use achromatic lens when focusing to focus an image at infinity or when making parallel light from the one point of light source.It does not provide sufficient optical performance when used in such as short-range distance imaging.
▶There is a direction to the incident light parallel 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-LAK22, SF6
Design wavelength700nm, 880nm, 1100nm
CoatingMulti-layer anti-reflection coating (700 – 1550nm)
CementUltraviolet Hardened Adhesive
Laser Damage Threshold0.3J/cm2
Surface Quality (Scratch−Dig)'40–20
Clear aperture90% of actual aperture

 

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