Lens system with multiple focal lines
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United States of America Patent
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Nov 23, 1999
Grant Date -
N/A
app pub date -
Feb 21, 1997
filing date -
Feb 22, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Lens systems are disclosed having multiple focal lines and that are operable to form multiple narrow superimposable focal lines. The focal lines typically have linewidths of .ltoreq. approximately 10 .mu.m, formed from an incident light flux from a laser. The superimposed focal lines can have sufficient energy density to serve as a pumping-laser source for an X-ray laser. The lens systems comprise, axially from the incident light side, a wave-surface splitter and a focusing system. The wave-surface splitter splits the wave surface of the incident light into subfluxes. The focusing system focuses the subfluxes into respective linear focal lines that can be superimposed to form a combined focal line having very high energy density. The wave-surface splitter is preferably a prism having multiple facets with respective prism angles; the focusing system preferably comprises multiple cylindrical lenses each having a generation line perpendicular to the ridge lines separating the facets of the prism.
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