Wavelength-Tunable Light Source And Optical Coherence Tomography
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United States of America Patent
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Issued Date -
Oct 16, 2008
app pub date -
Sep 22, 2004
filing date -
Sep 26, 2003
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Abstract
The present invention provides an OCT technique that permits tomographic observation of a biological body parts that is difficult to restrain and also provides a tomographic observation technique for the observation of a constrainable part that does not require constraint and remove the burden from biological body. A wavelength-tunable light generator (wavelength-tunable light source) is employed as the light source of the optical coherence tomography device. The wavelength-tunable light generator has a wave number tunable range width of at least 4.7.times.10.sup.-2 .mu.m.sup.-1 and an emitted-light frequency width of no more than 13 GHz, for example, and includes means capable of changing the wave number stepwise at wave number intervals of no more than 3.1.times.10.sup.-4 .mu.m.sup.-1 and time intervals of no more than 530 .mu.s.
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