Optics: measuring and testing – By light interference – For dimensional measurement
Reexamination Certificate
2006-06-13
2006-06-13
Lee, Hwa (Andrew) (Department: 2877)
Optics: measuring and testing
By light interference
For dimensional measurement
Reexamination Certificate
active
07061622
ABSTRACT:
An optical coherence tomography (OCT) system including an interferometer provides illuminating light along a first optical path to a sample and an optical delay line and collects light from the sample along a second optical path remitted at several scattering angles to a detector. In one embodiment, illuminating light is directed along a number of incident light paths through a focusing lens to a sample. The light paths and focusing lens are related to the sample and to both the incident light source and the detector. In another embodiment, a focusing system directs light to a location in the sample. A transmission grating or acousto-optic modulator directs light from the sample at an angle representative of the wavelength of the incident light on the transmission grating or acousto-optic modulator.
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Izatt Joseph A.
Rollins Andrew M.
Westphal Volker
Yazdanfar Siavash
Case Western Reserve University
Lee Hwa (Andrew)
Renner, Otto, Boisselle and Sklar LLP
University Hospitals of Cleveland
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