Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2004-04-23
2008-12-16
Lee, Benjamin C (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C250S221000, C385S122000, C359S710000, C359S867000
Reexamination Certificate
active
07466229
ABSTRACT:
Disclosed are an apparatus of converting a laser beam traveling straight to a beam propagated in all directions and a security system using the laser beam propagated in all directions. The laser beam traveling straight is incident on a cylindrical prism and repeatedly reflected and transmitted to be converted to the laser beam propagated in all directions. The laser beam is converted to a plane beam or a conical beam by controlling an incident angle of the laser beam incident on the cylindrical prism. The security system is constructed using the apparatus of generating the plane, beam or conical beam.
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Choi Jin
Kong Hong Jin
Korea Advance Institute of Science and Technology
Lee Benjamin C
Mayer & Williams PC
Mayer, Esq. Stuart H.
Willaims, Esq. Karin L.
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