Three-dimensional imaging device

A three-dimensional imaging device that repeats a process for outputting three-dimensional image signals for displaying first through N-th elemental images that constitute a three-dimensional image, said device comprising:

• an imaging optical system that forms an image of a subject with a focusing function and a compensation function to keep image magnification constant;
• an illuminating section that repeats an action to irradiate illumination light in several directions that cross in its optical axis direction in turn to illuminate first through N-th positions on said subject that are different in distance from said imaging optical system;
• a driving section that repeats an action to drive said imaging optical system so as to focus on one of said first through N-th positions to which the illumination light is irradiated by the illuminating section in synchronism with the action of the illuminating section,
• a capturing section that repeats an action to capture the subject image formed by said imaging optical system to generate image signals in synchronism with the action of said illuminating section;
• a superimposition section that superimposes a depth synchronizing signal on the image signal generated by said capturing section, as a synchronizing signal to specify which of said first through N-th elemental images is represented by the image signal, and
• an output section to output the superimposed image signal.