Optical: systems and elements – Lens – Including a nonspherical surface
Reexamination Certificate
2007-01-04
2008-07-15
Spector, David N (Department: 2873)
Optical: systems and elements
Lens
Including a nonspherical surface
C359S709000
Reexamination Certificate
active
07400457
ABSTRACT:
The invention relates to a beam shaping system for providing a square or rectangular laser beam having a controlled intensity profile (uniform, super gaussian or cosine corrected for example) from an incident non-uniform beam intensity profile laser beam source (a Gaussian profile, a profile with astigmatism or any non-rotationally symmetric and non-uniform profile for example). The beam shaping system uses a first acylindrical lens for shaping the incident laser beam along a first axis and a second acylindrical lens orthogonally disposed relative to the first acylindrical lens and for shaping the incident beam along a second axis. The thereby provided light beam is a rectangular beam having a controlled intensity distribution in the far field.
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“Refractive Beam Shaper—Flat-Top2 Generator”, StockerYale, Inc., May 2006, <http://www.stockeryale.com/i/lasers/products/flat-top.htm>.
“StockerYale Introduces the Flat-Top2 Generator”, Salem, N.H. (Business Wire), Jul. 6, 2006, StockerYale, Inc., <http://www.stockeryale.com/company
ews/pr—07062006.htm>.
Ogilvy Renault LLP
Spector David N
Stockeryale Canada Inc.
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