Holographic microscope including holographic image sensor

A holographic microscope, comprising:

• a light source emitting light to an object;
• a beam splitter reflecting the light emitted from the light source to the object and transmitting object light reflected from the object;
• a holographic image sensor sensing information, including a holographic image, by receiving the object light and allowing the object light to coherently interfere with reference light;
• and
• an image processor obtaining three-dimensional (3D) information about the object based on the information sensed by the holographic image sensor, wherein the holographic image sensor includes:
• a lens focusing the object light to the holographic image sensor;
• a filter transmitting a predetermined wavelength band of light of the focused object light;
• a light receiving unit receiving interference light to sense a holographic image;
• and
• a reference light source directly emitting the reference light having the predetermined wavelength band to the light receiving unit without a separate optical structure between the reference light source and the light receiving unit, wherein an optical axis of the reference light incident on the light receiving unit is different from an optical axis of the object light incident on the light receiving unit.