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Regulating the laser scanner
Neutral Density Wedge

Application Regulation of a laser scanner
Special Characteristics
  • Compensating neutral Density Wedge
  • Heat-resistant
  • Broad band anti-reflection coating
Material SCHOTT neutral density glass


The function of the wedge stop is to weaken the light beam in a laser scanner.

The wedge stop is made of SCHOTT grey glass. The optical path length remains constant by use of a counter rotation wedge made of a suitable optical glass. In order to obtain the required heat resistance, both parts are fused directly according to the Hellma process. The entrance and exit surfaces are provided with a broad band antireflection coating for three laser wavelengths.

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Hellma GmbH & Co. KG
Klosterrunsstraße 5
D-79379 Müllheim
Phone +49 7631/182-0

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