US 12,446,773 B2
Laser eye surgery system
David Angeley, Charlottesville, VA (US); and Zhao Wang, San Carlos, CA (US)
Assigned to AMO Development, LLC, Irvine, CA (US)
Filed by AMO Development, LLC, Irvine, CA (US)
Filed on Aug. 29, 2022, as Appl. No. 17/898,275.
Application 17/898,275 is a continuation of application No. 16/432,821, filed on Jun. 5, 2019, granted, now 11,426,068.
Application 16/432,821 is a continuation of application No. 15/245,097, filed on Aug. 23, 2016, granted, now 10,314,479, issued on Jun. 11, 2019.
Application 15/245,097 is a continuation of application No. 14/069,042, filed on Oct. 31, 2013, granted, now 9,445,946, issued on Sep. 20, 2016.
Claims priority of provisional application 61/722,048, filed on Nov. 2, 2012.
Prior Publication US 2022/0409043 A1, Dec. 29, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 3/10 (2006.01); A61F 9/008 (2006.01)
CPC A61B 3/102 (2013.01) [A61F 9/00825 (2013.01); A61F 2009/00846 (2013.01); A61F 2009/00851 (2013.01); A61F 2009/0087 (2013.01); A61F 2009/00872 (2013.01); A61F 2009/00889 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A ranging system configured to produce a source beam used to locate one or more structures of an eye, the ranging system including an optical coherence tomography (OCT) pickoff assembly for dividing an OCT light source beam into a sample beam and a reference beam, the OCT pickoff assembly comprising:
a first optical wedge; and
a second optical wedge separated from the first optical wedge,
wherein: the source beam propagates through the first optical wedge and into the second optical wedge;
each of the first and second optical wedges having non-parallel anterior and posterior surfaces with respect to entry and exit of the source beam as the source beam propagates through the first optical wedge and into the second optical wedge;
the second optical wedge posterior surface is partially reflective so as to divide the source beam into the sample beam and the reference beam;
the first and second optical wedges have a same wedge angle as each other and are arranged such that the wedge angles are opposing;
the sample beam propagates out of the second optical wedge through the posterior surface of the second optical wedge;
the reference beam propagates out of the second optical wedge through the anterior surface of the second optical wedge and propagates back through the first optical wedge and along a reference optical path; and
the first and second optical wedges are separated by a distance greater than a detection range of the ranging system to inhibit etalon effects.