Illumination apparatus, in particular slit lamp
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United States of America Patent
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Jun 3, 2008
Grant Date -
Dec 15, 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 illumination apparatus, usable for example as a slit lamp, comprises a light-emitter (2) and an optical element (12) having a free-form surface (13), and optionally a slit aperture (9) and an imaging optic (10). The concept of the present invention is that the free-form surface (13) is employed to generate a resultant illumination beam having a slit-shaped cross-section.
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