Tomographic imaging system for transparent material composite thin film

A tomographic imaging system for a transparent material composite thin film, the tomographic imaging system comprising:

• a light source;
• a light irradiation unit that irradiates light from the light source to a transparent material composite thin film sample and a reference mirror and acquires an interference signal between light reflected and scattered from the sample and light reflected from the reference mirror;
• a light measuring unit that measures the interference signal acquired by the light irradiation unit;
• a light transmission unit that transmits the light output from the light source to the light irradiation unit and transmits the interference signal of the light transmitted from the light irradiation unit to the light measuring unit;
• and
• a signal processing apparatus that controls to convert the interference signal of the sample detected by the light measuring unit, output the converted interference signal as a tomographic image, and monitor the interference signal acquired by the light irradiation unit to modulate intensity and a polarization state of the light input to the light irradiation unit,
• wherein the light irradiation unit includes:
• a sample lens that irradiates the light transmitted from the light source to the transparent material composite thin film sample;
• a reference lens that irradiates the light transmitted from the light source to the reference mirror;
• a collimator that straightens the light transmitted to the light irradiation unit;
• an adaptive illuminance controller that modulates the intensity and polarization state of the light input to the light irradiation unit;
• a pattern mask that extends a focal depth of the irradiated light by manipulating the intensity, a phase, and a path of the light input to the light irradiation unit for each spatial region;
• and
• a beam scanner that is disposed in front of the sample lens, and reflects and scans the light passing through the pattern mask toward the sample lens.