Title:
OPTICAL TOMOGRAPHIC IMAGING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2012/004967
Kind Code:
A1
Abstract:
An imaging apparatus (100) adjusts the polarization directions of irradiation beams (to a diffraction grating) corresponding to first and second beams (175 - 1, 175 - 2) respectively which have different polarization directions (for example, by adjusting a relative angle formed between light - emitting ends of respective polarization maintaining fibers) so that the spectral characteristics of the irradiation beams at the diffraction grating (141) coincide with each other. Then, the imaging apparatus acquires a tomographic image indicating polarization information for a object based on beams (that come from the diffraction grating for splitting and diffracting a beam from the adjustment unit) corresponding to the first and second beams respectively which have different polarization directions.
Inventors:
HIROSE FUTOSHI (JP)
Application Number:
PCT/JP2011/003798
Publication Date:
January 12, 2012
Filing Date:
July 04, 2011
Export Citation:
Assignee:
CANON KK (JP)
HIROSE FUTOSHI (JP)
HIROSE FUTOSHI (JP)
International Classes:
A61B3/10; A61B3/12; A61B5/00; G01B9/02; G02F1/01; G02F1/35
Domestic Patent References:
| WO2007103115A2 | 2007-09-13 |
Foreign References:
| US20080285043A1 | 2008-11-20 | |||
| JP2010156919A | 2010-07-15 |
Other References:
"Polarization maintaining fiber based ultra-high resolution spectral domain polarization sensitive optical coherence tomography", OPT. EXPRESS, vol. 17, 2009, pages 22704
"Autocalibration of spectral-domain optical coherence tomography spectrometers for in vivo quantitative retinal nerve fiber layer birefringence determination", J. BIOMED. OPT., vol. 12, 2007, pages 041205
"Autocalibration of spectral-domain optical coherence tomography spectrometers for in vivo quantitative retinal nerve fiber layer birefringence determination", J. BIOMED. OPT., vol. 12, 2007, pages 041205
Attorney, Agent or Firm:
ABE, Takuma et al. (30-2 Shimomaruko 3-chom, Ohta-ku Tokyo 01, JP)
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Claims: