Eye-protection apparatus, in particular retina-protection apparatus, and optical element having a free-form surface for an illumination beam path, and use of an optical element having a free-form surface
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United States of America Patent
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Oct 14, 2008
Grant Date -
Dec 22, 2005
app pub date -
Jun 9, 2005
filing date -
Jun 11, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An eye-protection apparatus, in particular retina-protection apparatus, for a surgical microscope, having an illumination beam that defines an illuminated field for an object plane (14) and having an optical element (4) in the illumination beam path, wherein the optical element is embodied in such a way that it deflects light away from a central region or a decentral region of the illuminated field.
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