• 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
S-DLB (Reasonable achromatic lenes )
  • S-DLB (Reasonable achromatic lenes )
  • It is a product with lower quality than DLB series with low surface spherical achromatic lens.
Attention

▶Achromatic lens is used when focusing an image at infinity or when making the point light source to collimated light. It does not provide sufficient optical performance when used in such as short-range imaging.
▶There is a direction of the incident parallel light with achromatic lens.
The radius of curvature is allowed to be incident parallel light from the side of (the surface indicated by arrows) small curvature surface.
If the parallel light incidents from the opposite side, then spherical aberration and chromatic aberration occur and the focused spot size will be large.
▶When used in the visible region, spherical aberration and chromatic aberration increase. In addition, the transmittance decreases.

Common Specifications
MaterialBK7, SF2
Design wavelengthBlue: 486.1nm, Green: 546.1nm, Red: 656.3nm
Centration<3′
CoatingAntireflection Coating for the Visible
Surface Quality (Scratch−Dig)60-40
Clear aperture90% of the diameter
Laser Damage Threshold0.3J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)

 

주제
 
   
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