09:30 〜 09:45
▲ [14a-C301-2] Relationship between the image quality and constant phase shifts in phase-shifting interferometry selectively extracting wavelength information
キーワード：holography, multiwavelength imaging, color imaging
In recent years, a novel type of multiwavelength-imaging technique was proposed, which is based on phase-division multiplexing of wavelengths. In this technique, which is called phase-shifting interferometry selectively extracting wavelength information, interferometry or holography is utilized to modulate the phases of object waves with multiple wavelengths. Wavelength-multiplexed phase-shifted holograms are recorded by a monochromatic image sensor and wavelength information is separated in the space domain by signal processing. Then, a restriction for phase shifts, which is required in the firstly proposed scheme, is relaxed by the improved algorithm. In this paper, the condition for properly utilizing the algorithm is numerically analyzed. Numerical results shows a shift of the piezo-driven mirror should be without integral multiple of quarters of the wavelengths to achieve high-quality three-dimensional imaging.