1. An endoscope, comprising: light source means for generating illumination lights; beam generator means for generating projection lights; a scope including diffraction grating means for producing patterned beams from the projection lights, imaging device means for taking images of objects to be imaged, and light guide means for illuminating the objects by the illumination lights; camera control unit means for converting signals from the imaging device means into image signals; display means for displaying images taken; means for identifying positions of the spots made on the objects by means of the patterned beams; means for indicating the positions of the spots identified by the identifying means on the display means; means for correcting errors found in the positions of the spots identified by the identifying means; and means for adjusting the indications on the display means of the positions of the spots by the indicating means according to the corrections made by the correcting means.