Optical tomograph using a plurality of wavelength-swept...

Details Optical tomograph using a plurality of wavelength-swept... Optical tomograph using a plurality of wavelength-swept...

2007-11-16

2010-11-09

Turner, Samuel A (Department: 2877)

Optics: measuring and testing

By light interference

Using fiber or waveguide interferometer

C356S479000

Reexamination Certificate

active

07830524

ABSTRACT:
An optical tomograph is equipped with: a light source unit for emitting a plurality of light beams, the wavelengths of which are swept within different predetermined wavelength bands respectively with the same period; light divider which divides each light beam into a measuring light beam and a reference light beam; light beam combiner which combines reflected light beams, which are the measuring light beams reflected by a measurement target when the measuring light beams are irradiated thereon, with a reference light. An interference light detector detects an interference light beam, which is formed by the reflected light beam and the reference light combined by the light beam combiner, for each of the light beams as an interference signal. A tomographic image processor generates a tomographic image of the measurement target employing the plurality of interference signals detected by the interference light detector.

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Mitsuo Takeda, “Optical Frequency Scanning Interference Microscopes”, Optics Engineering Contact, 2003, pp. 426-432, vol. 41, No. 7.

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