Optics: measuring and testing – By light interference – Using fiber or waveguide interferometer
Reexamination Certificate
2006-11-21
2006-11-21
Lee, Hwa (Andrew) (Department: 2877)
Optics: measuring and testing
By light interference
Using fiber or waveguide interferometer
C356S497000
Reexamination Certificate
active
07139077
ABSTRACT:
OCT apparatus includes an interferometer, having an input beam splitter and a 50/50 output splitter. The splitting ratio of the input splitter may be optimized depending on the source power of light source and on the mismatch of the balanced receiver. The input splitter is a plate beam-splitter to minimize the stray reflected light in the interferometer and allow sequential operation of the apparatus in the OCT or in the confocal regime. The switching between the two regimes may be at will, or synchronous with the en-face scanning which results in quasi-simultaneous OCT/confocal imaging or in alternatives frames, confocal and OCT. By using polarization sensitive elements, two channels are provided in each regime, OCT and confocal. The two confocal polarization sensitive channels may allow adjustments of compensators prior to OCT measurements or OCT imaging.
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Cucu Radu G.
Dobre George M.
Jackson David A.
Podoleanu Adrian Gh.
Rogers John A.
Connolly Patrick
Laubscher, Jr. Lawrence E.
Lee Hwa (Andrew)
OTI Ophthalmic Technologies Inc.
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