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  • 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
UDL/NUDL (Ultra-violet Achromats)
  • UDL/NUDL (Ultra-violet Achromats)
  • These lenses have different refractive index and produces a high degree of correction across a bandwidth of 200 − 400nm.
Attention

▶These focusing lenses are made for use to image an object located in an infinitive distance or using a point of source as a parallel light. Near distance of an image will not produce any good optical result.
▶The correct direction to input a parallel light is on the top side of the SIGMA KOKI letters. If the direction is wrong, the spherical aberration will be big and the image unfocused.
▶If the wavelength is applied in-correctly, the spherical aberration and transmission will be bad.
▶Usage with high power laser or near high temperature light source, the high heat build-up in the lens may alter the focal length. To avoid this, heat prevention is required.
▶To reduce the focus spot size, ensure that the input beam diameter (1/e2) is reduced to half of the effective diameter of the focus lens.
▶These focusing lenses are not chromatic lenses;  they are not optically corrected.
▶The lenses have 3% to 4% of reflectivity; therefore about over 13% of loss is expected in transmission.

Common Specifications
Material of frameSynthetic fused silica for Excimer Laser
Design wavelength200nm、308nm、400nm
CoatingUncoated
Acceptance angle±1°

 

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